<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019b47d6-3f81-782f-9635-2dba7b173c01,g:cd15c499-8a3e-444a-9b53-f6d4d8dfe9a7-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://equinoxgold.com/role/Cover" xlink:type="simple" xlink:href="eqx-20251231.xsd#Cover"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressesTable_019b47d6-435b-7a1b-b420-a817cbb537f2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_EntityAddressesTable_019b47d6-435b-7a1b-b420-a817cbb537f2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressesAddressTypeAxis_019b47d6-435b-7e92-9ee7-7666f5f42018" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressesAddressTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_EntityAddressesTable_019b47d6-435b-7a1b-b420-a817cbb537f2" xlink:to="loc_dei_EntityAddressesAddressTypeAxis_019b47d6-435b-7e92-9ee7-7666f5f42018" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AddressTypeDomain_019b47d6-435b-7e92-9ee7-7666f5f42018_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AddressTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_EntityAddressesAddressTypeAxis_019b47d6-435b-7e92-9ee7-7666f5f42018" xlink:to="loc_dei_AddressTypeDomain_019b47d6-435b-7e92-9ee7-7666f5f42018_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AddressTypeDomain_019b47d6-435b-7ba1-bd53-71c413692cf7" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AddressTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_EntityAddressesAddressTypeAxis_019b47d6-435b-7e92-9ee7-7666f5f42018" xlink:to="loc_dei_AddressTypeDomain_019b47d6-435b-7ba1-bd53-71c413692cf7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_BusinessContactMember_019b47d6-435b-70f9-9163-021b890a6691" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_BusinessContactMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_AddressTypeDomain_019b47d6-435b-7ba1-bd53-71c413692cf7" xlink:to="loc_dei_BusinessContactMember_019b47d6-435b-70f9-9163-021b890a6691" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019b47d6-435b-75c1-a553-e24eea474122" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_DocumentType_019b47d6-435b-75c1-a553-e24eea474122" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentRegistrationStatement_019b47d6-435b-7de7-affc-63716839418f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentRegistrationStatement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_DocumentRegistrationStatement_019b47d6-435b-7de7-affc-63716839418f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentAnnualReport_019b47d6-435b-7963-a0fe-b0bf4ad7ee3b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentAnnualReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_DocumentAnnualReport_019b47d6-435b-7963-a0fe-b0bf4ad7ee3b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_019b47d6-435b-7c0e-8524-f129701060a2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_CurrentFiscalYearEndDate_019b47d6-435b-7c0e-8524-f129701060a2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019b47d6-435b-7988-8c28-26b8fddcd1d5" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_DocumentPeriodEndDate_019b47d6-435b-7988-8c28-26b8fddcd1d5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019b47d6-435b-7803-9d44-372e1047f701" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_EntityFileNumber_019b47d6-435b-7803-9d44-372e1047f701" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019b47d6-435b-7557-bf62-d5f8183cfcb8" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_EntityRegistrantName_019b47d6-435b-7557-bf62-d5f8183cfcb8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019b47d6-435b-7b2e-98dd-b8766e1f2e95" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019b47d6-435b-7b2e-98dd-b8766e1f2e95" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityPrimarySicNumber_019b47d6-435b-7c44-9a72-8eb68c4f73dc" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityPrimarySicNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_EntityPrimarySicNumber_019b47d6-435b-7c44-9a72-8eb68c4f73dc" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019b47d6-435b-702c-8595-b7530b333473" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_EntityAddressAddressLine1_019b47d6-435b-702c-8595-b7530b333473" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_019b47d6-435b-7bb2-86e9-d79c5fc417f2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine2"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_EntityAddressAddressLine2_019b47d6-435b-7bb2-86e9-d79c5fc417f2" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019b47d6-435b-7376-9e2e-f3b87c724cf8" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_EntityAddressCityOrTown_019b47d6-435b-7376-9e2e-f3b87c724cf8" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019b47d6-435b-72a0-8aab-0f991374588f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_EntityAddressStateOrProvince_019b47d6-435b-72a0-8aab-0f991374588f" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCountry_019b47d6-435b-7464-a3bb-75db47250ee4" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCountry"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_EntityAddressCountry_019b47d6-435b-7464-a3bb-75db47250ee4" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019b47d6-435b-777e-8e41-c0a1593d5694" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_EntityAddressPostalZipCode_019b47d6-435b-777e-8e41-c0a1593d5694" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CountryRegion_019b47d6-435b-74ff-8885-11a3dcc02bb4" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CountryRegion"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_CountryRegion_019b47d6-435b-74ff-8885-11a3dcc02bb4" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019b47d6-435b-73b3-b218-fc332c18b0d8" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_CityAreaCode_019b47d6-435b-73b3-b218-fc332c18b0d8" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019b47d6-435b-7e6c-86ca-f35cccc2832f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_LocalPhoneNumber_019b47d6-435b-7e6c-86ca-f35cccc2832f" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_ContactPersonnelName_019b47d6-435b-721a-9152-d2e37f2b168a" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_ContactPersonnelName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_ContactPersonnelName_019b47d6-435b-721a-9152-d2e37f2b168a" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019b47d6-435b-7e2d-be61-7adca88df8de" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_Security12bTitle_019b47d6-435b-7e2d-be61-7adca88df8de" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019b47d6-435b-7bbb-bccd-0b0fe48d6681" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_TradingSymbol_019b47d6-435b-7bbb-bccd-0b0fe48d6681" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019b47d6-435b-77ac-92f5-95dbbb5eb6c3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_SecurityExchangeName_019b47d6-435b-77ac-92f5-95dbbb5eb6c3" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AnnualInformationForm_019b47d6-435b-7063-88cf-82710c05d75c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AnnualInformationForm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_AnnualInformationForm_019b47d6-435b-7063-88cf-82710c05d75c" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AuditedAnnualFinancialStatements_019b47d6-435b-7fb1-bbd8-64b81793f536" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AuditedAnnualFinancialStatements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_AuditedAnnualFinancialStatements_019b47d6-435b-7fb1-bbd8-64b81793f536" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_019b47d6-435b-71db-861d-e510747233f3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_019b47d6-435b-71db-861d-e510747233f3" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus_019b47d6-435b-769f-a6d2-ee5125ca3fbc" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCurrentReportingStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_EntityCurrentReportingStatus_019b47d6-435b-769f-a6d2-ee5125ca3fbc" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent_019b47d6-435b-7ecb-8621-1ccedad9a040" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityInteractiveDataCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_EntityInteractiveDataCurrent_019b47d6-435b-7ecb-8621-1ccedad9a040" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019b47d6-435b-7417-912f-e26532487b97" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_EntityEmergingGrowthCompany_019b47d6-435b-7417-912f-e26532487b97" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_IcfrAuditorAttestationFlag_019b47d6-435b-7fdd-82ff-b865eb6ec588" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_IcfrAuditorAttestationFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_IcfrAuditorAttestationFlag_019b47d6-435b-7fdd-82ff-b865eb6ec588" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFinStmtErrorCorrectionFlag_019b47d6-435b-77f6-8348-b156c6409833" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFinStmtErrorCorrectionFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_DocumentFinStmtErrorCorrectionFlag_019b47d6-435b-77f6-8348-b156c6409833" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019b47d6-435b-767f-89e5-16a3b7b9dcb6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_AmendmentFlag_019b47d6-435b-767f-89e5-16a3b7b9dcb6" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus_019b47d6-435b-7023-acca-2c3d945a5adb" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFiscalYearFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_DocumentFiscalYearFocus_019b47d6-435b-7023-acca-2c3d945a5adb" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus_019b47d6-435b-7590-bba3-d7982d10c3bf" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFiscalPeriodFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_DocumentFiscalPeriodFocus_019b47d6-435b-7590-bba3-d7982d10c3bf" xlink:type="arc" order="32"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019b47d6-435b-73f7-a9ea-5e2064099986" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityAddressesLineItems_019b47d6-435b-7486-bf9e-373d241a19cb" xlink:to="loc_dei_EntityCentralIndexKey_019b47d6-435b-73f7-a9ea-5e2064099986" xlink:type="arc" order="33"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/ConsolidatedStatementsofComprehensiveIncomeParenthetical" xlink:type="simple" xlink:href="eqx-20251231.xsd#ConsolidatedStatementsofComprehensiveIncomeParenthetical"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/ConsolidatedStatementsofComprehensiveIncomeParenthetical" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_StatementsOfComprehensiveIncomeLineItems_019b47d6-435b-7cfa-8c98-087bf6d5645f" xlink:href="eqx-20251231.xsd#eqx_StatementsOfComprehensiveIncomeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_StatementsOfComprehensiveIncomeTable_019b47d6-435b-7d45-a429-cc201acd24e7" xlink:href="eqx-20251231.xsd#eqx_StatementsOfComprehensiveIncomeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_StatementsOfComprehensiveIncomeLineItems_019b47d6-435b-7cfa-8c98-087bf6d5645f" xlink:to="loc_eqx_StatementsOfComprehensiveIncomeTable_019b47d6-435b-7d45-a429-cc201acd24e7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsAxis_019b47d6-435b-795f-a7a5-9e8e119bd287" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_StatementsOfComprehensiveIncomeTable_019b47d6-435b-7d45-a429-cc201acd24e7" xlink:to="loc_ifrs-full_JointOperationsAxis_019b47d6-435b-795f-a7a5-9e8e119bd287" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsDomain_019b47d6-435b-795f-a7a5-9e8e119bd287_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_JointOperationsAxis_019b47d6-435b-795f-a7a5-9e8e119bd287" xlink:to="loc_ifrs-full_JointOperationsDomain_019b47d6-435b-795f-a7a5-9e8e119bd287_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsDomain_019b47d6-435b-7564-a0c6-04cee2b2a97d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_JointOperationsAxis_019b47d6-435b-795f-a7a5-9e8e119bd287" xlink:to="loc_ifrs-full_JointOperationsDomain_019b47d6-435b-7564-a0c6-04cee2b2a97d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-435b-754c-af7e-5ded30e42725" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_JointOperationsDomain_019b47d6-435b-7564-a0c6-04cee2b2a97d" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-435b-754c-af7e-5ded30e42725" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestInJointOperation_019b47d6-435b-7687-b3ec-4dca0afbc780" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfOwnershipInterestInJointOperation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_StatementsOfComprehensiveIncomeLineItems_019b47d6-435b-7cfa-8c98-087bf6d5645f" xlink:to="loc_ifrs-full_ProportionOfOwnershipInterestInJointOperation_019b47d6-435b-7687-b3ec-4dca0afbc780" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/ConsolidatedStatementsofChangesinEquity" xlink:type="simple" xlink:href="eqx-20251231.xsd#ConsolidatedStatementsofChangesinEquity"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/ConsolidatedStatementsofChangesinEquity" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfChangesInEquityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityTable_019b47d6-435b-7b3b-be7d-fed4653a5119" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfChangesInEquityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_ifrs-full_StatementOfChangesInEquityTable_019b47d6-435b-7b3b-be7d-fed4653a5119" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComponentsOfEquityAxis_019b47d6-435b-78d7-99f9-524cf0d7a9c0" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_StatementOfChangesInEquityTable_019b47d6-435b-7b3b-be7d-fed4653a5119" xlink:to="loc_ifrs-full_ComponentsOfEquityAxis_019b47d6-435b-78d7-99f9-524cf0d7a9c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComponentsOfEquityDomain_019b47d6-435b-78d7-99f9-524cf0d7a9c0_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ComponentsOfEquityAxis_019b47d6-435b-78d7-99f9-524cf0d7a9c0" xlink:to="loc_ifrs-full_ComponentsOfEquityDomain_019b47d6-435b-78d7-99f9-524cf0d7a9c0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComponentsOfEquityDomain_019b47d6-435b-7241-bf97-7550402bd32b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ComponentsOfEquityAxis_019b47d6-435b-78d7-99f9-524cf0d7a9c0" xlink:to="loc_ifrs-full_ComponentsOfEquityDomain_019b47d6-435b-7241-bf97-7550402bd32b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IssuedCapitalMember_019b47d6-435b-7ed8-8de8-6c8b951dc959" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IssuedCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ComponentsOfEquityDomain_019b47d6-435b-7241-bf97-7550402bd32b" xlink:to="loc_ifrs-full_IssuedCapitalMember_019b47d6-435b-7ed8-8de8-6c8b951dc959" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherReservesMember_019b47d6-435b-7ec7-afe3-ef7a491650b0" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherReservesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ComponentsOfEquityDomain_019b47d6-435b-7241-bf97-7550402bd32b" xlink:to="loc_ifrs-full_OtherReservesMember_019b47d6-435b-7ec7-afe3-ef7a491650b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AccumulatedOtherComprehensiveIncomeMember_019b47d6-435b-793b-8abb-6b90dd34ce71" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ComponentsOfEquityDomain_019b47d6-435b-7241-bf97-7550402bd32b" xlink:to="loc_ifrs-full_AccumulatedOtherComprehensiveIncomeMember_019b47d6-435b-793b-8abb-6b90dd34ce71" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RetainedEarningsMember_019b47d6-435b-7533-b312-6d2d87ff0ed3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ComponentsOfEquityDomain_019b47d6-435b-7241-bf97-7550402bd32b" xlink:to="loc_ifrs-full_RetainedEarningsMember_019b47d6-435b-7533-b312-6d2d87ff0ed3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfSharesOutstanding_019b47d6-435b-77f1-b693-1ac10c2a6564" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_ifrs-full_NumberOfSharesOutstanding_019b47d6-435b-77f1-b693-1ac10c2a6564" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity_019b47d6-435b-7031-b3da-879796db2d9c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Equity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_ifrs-full_Equity_019b47d6-435b-7031-b3da-879796db2d9c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SharesIssuedConnectionWithAcquisitionShare_019b47d6-435b-796c-95b3-31847009e4f0" xlink:href="eqx-20251231.xsd#eqx_SharesIssuedConnectionWithAcquisitionShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_eqx_SharesIssuedConnectionWithAcquisitionShare_019b47d6-435b-796c-95b3-31847009e4f0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SharesIssuedConnectionWithAcquisitionValue_019b47d6-435b-7fce-a025-60b4bb1a315f" xlink:href="eqx-20251231.xsd#eqx_SharesIssuedConnectionWithAcquisitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_eqx_SharesIssuedConnectionWithAcquisitionValue_019b47d6-435b-7fce-a025-60b4bb1a315f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_IssueOfEquityShares_019b47d6-435b-75b6-b9a4-1e3df63d8049" xlink:href="eqx-20251231.xsd#eqx_IssueOfEquityShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_eqx_IssueOfEquityShares_019b47d6-435b-75b6-b9a4-1e3df63d8049" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IssueOfEquity_019b47d6-435b-7d18-b7af-1319b66852ea" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IssueOfEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_ifrs-full_IssueOfEquity_019b47d6-435b-7d18-b7af-1319b66852ea" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ConversionOfConvertibleNotesShares_019b47d6-435b-7957-b969-75a90288016a" xlink:href="eqx-20251231.xsd#eqx_ConversionOfConvertibleNotesShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_eqx_ConversionOfConvertibleNotesShares_019b47d6-435b-7957-b969-75a90288016a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ConversionOfConvertibleNotes_019b47d6-435b-7dda-a857-6ad200491238" xlink:href="eqx-20251231.xsd#eqx_ConversionOfConvertibleNotes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_eqx_ConversionOfConvertibleNotes_019b47d6-435b-7dda-a857-6ad200491238" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SharesIssuedOnExerciseOfWarrantsStockOptionsAndRsusShares_019b47d6-435b-7528-b48c-10a8b9fd54e6" xlink:href="eqx-20251231.xsd#eqx_SharesIssuedOnExerciseOfWarrantsStockOptionsAndRsusShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_eqx_SharesIssuedOnExerciseOfWarrantsStockOptionsAndRsusShares_019b47d6-435b-7528-b48c-10a8b9fd54e6" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SharesIssuedOnExerciseOfWarrantsStockOptionsAndRsus_019b47d6-435b-771b-afa0-bfb8e29e385a" xlink:href="eqx-20251231.xsd#eqx_SharesIssuedOnExerciseOfWarrantsStockOptionsAndRsus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_eqx_SharesIssuedOnExerciseOfWarrantsStockOptionsAndRsus_019b47d6-435b-771b-afa0-bfb8e29e385a" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_019b47d6-435b-7a92-b647-da9304a5cb97" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_019b47d6-435b-7a92-b647-da9304a5cb97" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShareIssueRelatedCost_019b47d6-435b-7add-b4fd-f7215c8c6e69" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShareIssueRelatedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_ifrs-full_ShareIssueRelatedCost_019b47d6-435b-7add-b4fd-f7215c8c6e69" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DispositionOfMarketableSecurities_019b47d6-435b-7123-900d-d6c122e6153e" xlink:href="eqx-20251231.xsd#eqx_DispositionOfMarketableSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_eqx_DispositionOfMarketableSecurities_019b47d6-435b-7123-900d-d6c122e6153e" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ModificationOfConvertibleNotes_019b47d6-435b-7f23-89ac-22f34fa712ab" xlink:href="eqx-20251231.xsd#eqx_ModificationOfConvertibleNotes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_eqx_ModificationOfConvertibleNotes_019b47d6-435b-7f23-89ac-22f34fa712ab" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SharesAcquiredAndCancelledShares_019b47d6-435b-749f-83fd-b96bc8bf7697" xlink:href="eqx-20251231.xsd#eqx_SharesAcquiredAndCancelledShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_eqx_SharesAcquiredAndCancelledShares_019b47d6-435b-749f-83fd-b96bc8bf7697" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SharesAcquiredAndCancelled_019b47d6-435b-7cb5-90ec-d26a27388f80" xlink:href="eqx-20251231.xsd#eqx_SharesAcquiredAndCancelled"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_eqx_SharesAcquiredAndCancelled_019b47d6-435b-7cb5-90ec-d26a27388f80" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncome_019b47d6-435b-71d6-b498-5ee8823afa0e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComprehensiveIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems_019b47d6-435b-7258-8f3b-f5c8e4efcecb" xlink:to="loc_ifrs-full_ComprehensiveIncome_019b47d6-435b-71d6-b498-5ee8823afa0e" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfSharesOutstanding_019b47d6-435b-735f-a896-7a7e8f0db4fb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity_019b47d6-435b-743c-b7a6-4433d035a9fb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Equity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/NATUREOFOPERATIONSAdditionalInformationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#NATUREOFOPERATIONSAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/NATUREOFOPERATIONSAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_019b47d6-435b-76cf-8398-330694c83d9b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_019b47d6-435b-703a-81d5-49b6030f2601" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_019b47d6-435b-76cf-8398-330694c83d9b" xlink:to="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_019b47d6-435b-703a-81d5-49b6030f2601" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019b47d6-435b-77eb-a65f-9032716ad486" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_019b47d6-435b-703a-81d5-49b6030f2601" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019b47d6-435b-77eb-a65f-9032716ad486" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-77eb-a65f-9032716ad486_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019b47d6-435b-77eb-a65f-9032716ad486" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-77eb-a65f-9032716ad486_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7201-bdd2-267b5e888e84" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019b47d6-435b-77eb-a65f-9032716ad486" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7201-bdd2-267b5e888e84" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-435b-766a-87a2-bc3dc3053579" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7201-bdd2-267b5e888e84" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-435b-766a-87a2-bc3dc3053579" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsAxis_019c2546-4344-7f37-a979-be5e54572bf3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_019b47d6-435b-703a-81d5-49b6030f2601" xlink:to="loc_ifrs-full_JointOperationsAxis_019c2546-4344-7f37-a979-be5e54572bf3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsDomain_019c2546-4344-7f37-a979-be5e54572bf3_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_JointOperationsAxis_019c2546-4344-7f37-a979-be5e54572bf3" xlink:to="loc_ifrs-full_JointOperationsDomain_019c2546-4344-7f37-a979-be5e54572bf3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsDomain_019c2546-4344-7302-b1f1-025c8217fca9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_JointOperationsAxis_019c2546-4344-7f37-a979-be5e54572bf3" xlink:to="loc_ifrs-full_JointOperationsDomain_019c2546-4344-7302-b1f1-025c8217fca9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019c2547-1c6c-7c2b-8b0a-97005787834e" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_JointOperationsDomain_019c2546-4344-7302-b1f1-025c8217fca9" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019c2547-1c6c-7c2b-8b0a-97005787834e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019c36e5-6880-7483-be2e-cd390e2ca669" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingAndDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_019b47d6-435b-703a-81d5-49b6030f2601" xlink:to="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019c36e5-6880-7483-be2e-cd390e2ca669" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingOperationsMember_019c36e5-6880-7483-be2e-cd390e2ca669_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019c36e5-6880-7483-be2e-cd390e2ca669" xlink:to="loc_ifrs-full_ContinuingOperationsMember_019c36e5-6880-7483-be2e-cd390e2ca669_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingOperationsMember_019c36e5-6880-7bd6-91f8-018b946a08e9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019c36e5-6880-7483-be2e-cd390e2ca669" xlink:to="loc_ifrs-full_ContinuingOperationsMember_019c36e5-6880-7bd6-91f8-018b946a08e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DiscontinuedOperationsMember_019c36e5-6880-7f09-a2df-e4b82f58a1e4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ContinuingOperationsMember_019c36e5-6880-7bd6-91f8-018b946a08e9" xlink:to="loc_ifrs-full_DiscontinuedOperationsMember_019c36e5-6880-7f09-a2df-e4b82f58a1e4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_019c48d6-974d-7558-a057-3945e7bc0e89" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_019b47d6-435b-703a-81d5-49b6030f2601" xlink:to="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_019c48d6-974d-7558-a057-3945e7bc0e89" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_019c48d6-974d-7558-a057-3945e7bc0e89_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_019c48d6-974d-7558-a057-3945e7bc0e89" xlink:to="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_019c48d6-974d-7558-a057-3945e7bc0e89_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_019c48d6-974d-75d0-b647-904ef935a5a9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_019c48d6-974d-7558-a057-3945e7bc0e89" xlink:to="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_019c48d6-974d-75d0-b647-904ef935a5a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassificationOfAssetsAsHeldForSaleMember_019c48d8-bb04-7865-b313-15e03a39ccf0" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassificationOfAssetsAsHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_019c48d6-974d-75d0-b647-904ef935a5a9" xlink:to="loc_ifrs-full_ClassificationOfAssetsAsHeldForSaleMember_019c48d8-bb04-7865-b313-15e03a39ccf0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_019b47d6-435b-7da4-96a9-5866e1da1644" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfOwnershipInterestInSubsidiary"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_019b47d6-435b-76cf-8398-330694c83d9b" xlink:to="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_019b47d6-435b-7da4-96a9-5866e1da1644" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ProportionOfOwnershipInterestInJointOperationByUnconsolidatedEntity_019c2545-d377-76f9-ba86-8f04f8acdf25" xlink:href="eqx-20251231.xsd#eqx_ProportionOfOwnershipInterestInJointOperationByUnconsolidatedEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_019b47d6-435b-76cf-8398-330694c83d9b" xlink:to="loc_eqx_ProportionOfOwnershipInterestInJointOperationByUnconsolidatedEntity_019c2545-d377-76f9-ba86-8f04f8acdf25" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/NATUREOFOPERATIONSScheduleofDetailedInformationaboutCompanysPrincipalPropertiesandMaterialSubsidiariesDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#NATUREOFOPERATIONSScheduleofDetailedInformationaboutCompanysPrincipalPropertiesandMaterialSubsidiariesDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/NATUREOFOPERATIONSScheduleofDetailedInformationaboutCompanysPrincipalPropertiesandMaterialSubsidiariesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_019b47d6-435b-7969-bc6c-a7024739f7fd" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_019b47d6-435b-7851-a7e6-20b1db184009" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_019b47d6-435b-7969-bc6c-a7024739f7fd" xlink:to="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_019b47d6-435b-7851-a7e6-20b1db184009" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019b47d6-435b-7ae6-aac2-6569b48138f9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_019b47d6-435b-7851-a7e6-20b1db184009" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019b47d6-435b-7ae6-aac2-6569b48138f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7ae6-aac2-6569b48138f9_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019b47d6-435b-7ae6-aac2-6569b48138f9" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7ae6-aac2-6569b48138f9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7cdf-8b1e-5667c29e0342" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019b47d6-435b-7ae6-aac2-6569b48138f9" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7cdf-8b1e-5667c29e0342" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PremierGoldMinesHardrockInc.AndPAGHoldingCorp.Member_019b47d6-435b-71cb-bba9-daccfc446cd4" xlink:href="eqx-20251231.xsd#eqx_PremierGoldMinesHardrockInc.AndPAGHoldingCorp.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7cdf-8b1e-5667c29e0342" xlink:to="loc_eqx_PremierGoldMinesHardrockInc.AndPAGHoldingCorp.Member_019b47d6-435b-71cb-bba9-daccfc446cd4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MarathonGoldCorporationMember_019b911c-d2c5-71fa-865c-15a85257c4b4" xlink:href="eqx-20251231.xsd#eqx_MarathonGoldCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7cdf-8b1e-5667c29e0342" xlink:to="loc_eqx_MarathonGoldCorporationMember_019b911c-d2c5-71fa-865c-15a85257c4b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_WesternMesquiteMinesIncMember_019b47d6-435b-7279-bc39-f7c071d31175" xlink:href="eqx-20251231.xsd#eqx_WesternMesquiteMinesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7cdf-8b1e-5667c29e0342" xlink:to="loc_eqx_WesternMesquiteMinesIncMember_019b47d6-435b-7279-bc39-f7c071d31175" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DesarrolloMineroDeNicaraguaS.A.Member_019b911e-2499-7d03-92ea-324e710532e1" xlink:href="eqx-20251231.xsd#eqx_DesarrolloMineroDeNicaraguaS.A.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7cdf-8b1e-5667c29e0342" xlink:to="loc_eqx_DesarrolloMineroDeNicaraguaS.A.Member_019b911e-2499-7d03-92ea-324e710532e1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_TritonMineraS.A.Member_019b911e-8603-71e5-aa97-4e95b3d77c41" xlink:href="eqx-20251231.xsd#eqx_TritonMineraS.A.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7cdf-8b1e-5667c29e0342" xlink:to="loc_eqx_TritonMineraS.A.Member_019b911e-8603-71e5-aa97-4e95b3d77c41" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MineracaoAurizonaS.A.SantaLuzDesenvolvimentoMineralLtdaAndMineracaoRiachoDosMachadosLtdaMember_019bec71-f033-7d53-9b26-2bc170ef015c" xlink:href="eqx-20251231.xsd#eqx_MineracaoAurizonaS.A.SantaLuzDesenvolvimentoMineralLtdaAndMineracaoRiachoDosMachadosLtdaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7cdf-8b1e-5667c29e0342" xlink:to="loc_eqx_MineracaoAurizonaS.A.SantaLuzDesenvolvimentoMineralLtdaAndMineracaoRiachoDosMachadosLtdaMember_019bec71-f033-7d53-9b26-2bc170ef015c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CastleMountainMember_019cfd21-a29b-7016-aa51-c7247a2064cb" xlink:href="eqx-20251231.xsd#eqx_CastleMountainMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7cdf-8b1e-5667c29e0342" xlink:to="loc_eqx_CastleMountainMember_019cfd21-a29b-7016-aa51-c7247a2064cb" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DesarollosMinerosSanLuisS.A.DeC.V.Member_019b911c-d2c5-7194-bb8a-e0d5306ed055" xlink:href="eqx-20251231.xsd#eqx_DesarollosMinerosSanLuisS.A.DeC.V.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7cdf-8b1e-5667c29e0342" xlink:to="loc_eqx_DesarollosMinerosSanLuisS.A.DeC.V.Member_019b911c-d2c5-7194-bb8a-e0d5306ed055" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_019b47d6-435b-78a7-9dcd-1052bf107207" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfOwnershipInterestInSubsidiary"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_019b47d6-435b-7969-bc6c-a7024739f7fd" xlink:to="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_019b47d6-435b-78a7-9dcd-1052bf107207" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/BASISOFPREPARATIONDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#BASISOFPREPARATIONDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/BASISOFPREPARATIONDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_019b47d6-435b-7d37-80d4-61b524d9df89" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_019b47d6-435b-7643-9d5c-e888f970ea2b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_019b47d6-435b-7d37-80d4-61b524d9df89" xlink:to="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_019b47d6-435b-7643-9d5c-e888f970ea2b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019b47d6-435b-752d-a521-e9c4c3bae243" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_019b47d6-435b-7643-9d5c-e888f970ea2b" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019b47d6-435b-752d-a521-e9c4c3bae243" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-752d-a521-e9c4c3bae243_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019b47d6-435b-752d-a521-e9c4c3bae243" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-752d-a521-e9c4c3bae243_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7669-a9d6-9ce55970a83e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019b47d6-435b-752d-a521-e9c4c3bae243" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7669-a9d6-9ce55970a83e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-435b-7044-a3ef-6bb2bb4d42e2" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435b-7669-a9d6-9ce55970a83e" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-435b-7044-a3ef-6bb2bb4d42e2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsAxis_019b47d6-435b-7885-a4c3-db00b5c555c0" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_019b47d6-435b-7643-9d5c-e888f970ea2b" xlink:to="loc_ifrs-full_JointOperationsAxis_019b47d6-435b-7885-a4c3-db00b5c555c0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsDomain_019b47d6-435b-7885-a4c3-db00b5c555c0_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_JointOperationsAxis_019b47d6-435b-7885-a4c3-db00b5c555c0" xlink:to="loc_ifrs-full_JointOperationsDomain_019b47d6-435b-7885-a4c3-db00b5c555c0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsDomain_019b47d6-435b-73a3-b26a-471c99a80b7e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_JointOperationsAxis_019b47d6-435b-7885-a4c3-db00b5c555c0" xlink:to="loc_ifrs-full_JointOperationsDomain_019b47d6-435b-73a3-b26a-471c99a80b7e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-435b-7c28-ae44-96fc62abed2d" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_JointOperationsDomain_019b47d6-435b-73a3-b26a-471c99a80b7e" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-435b-7c28-ae44-96fc62abed2d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_019b47d6-435b-7094-b843-da9be1342f03" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfOwnershipInterestInSubsidiary"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_019b47d6-435b-7d37-80d4-61b524d9df89" xlink:to="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_019b47d6-435b-7094-b843-da9be1342f03" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestInJointOperation_019b47d6-435b-7aad-adbf-bfd65485082e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfOwnershipInterestInJointOperation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_019b47d6-435b-7d37-80d4-61b524d9df89" xlink:to="loc_ifrs-full_ProportionOfOwnershipInterestInJointOperation_019b47d6-435b-7aad-adbf-bfd65485082e" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/CORPORATETRANSACTIONSAdditionalInformationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#CORPORATETRANSACTIONSAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/CORPORATETRANSACTIONSAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfBusinessCombinationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019b47d6-435b-71a5-9bfd-b509c74a8054" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfBusinessCombinationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019b47d6-435b-71a5-9bfd-b509c74a8054" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019bfb24-8500-7bf9-b849-2cd9f68c9c6c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019b47d6-435b-71a5-9bfd-b509c74a8054" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019bfb24-8500-7bf9-b849-2cd9f68c9c6c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019bfb24-8500-7bf9-b849-2cd9f68c9c6c_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019bfb24-8500-7bf9-b849-2cd9f68c9c6c" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019bfb24-8500-7bf9-b849-2cd9f68c9c6c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019bfb24-8500-7643-853c-cb55045ee159" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019bfb24-8500-7bf9-b849-2cd9f68c9c6c" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019bfb24-8500-7643-853c-cb55045ee159" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CalibreAcquisitionMember_019bfb24-8500-7263-8355-ffce0bda34d4" xlink:href="eqx-20251231.xsd#eqx_CalibreAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019bfb24-8500-7643-853c-cb55045ee159" xlink:to="loc_eqx_CalibreAcquisitionMember_019bfb24-8500-7263-8355-ffce0bda34d4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PAGHoldingCorpPAGHMember_019bfb25-688a-77b1-8066-d544d66ec6bc" xlink:href="eqx-20251231.xsd#eqx_PAGHoldingCorpPAGHMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019bfb24-8500-7643-853c-cb55045ee159" xlink:to="loc_eqx_PAGHoldingCorpPAGHMember_019bfb25-688a-77b1-8066-d544d66ec6bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AssetSaleAxis_019bfb25-1885-7d70-bafe-c923b5aa325d" xlink:href="eqx-20251231.xsd#eqx_AssetSaleAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019b47d6-435b-71a5-9bfd-b509c74a8054" xlink:to="loc_eqx_AssetSaleAxis_019bfb25-1885-7d70-bafe-c923b5aa325d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AssetSaleDomain_019bfb25-1885-7d70-bafe-c923b5aa325d_default" xlink:href="eqx-20251231.xsd#eqx_AssetSaleDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_eqx_AssetSaleAxis_019bfb25-1885-7d70-bafe-c923b5aa325d" xlink:to="loc_eqx_AssetSaleDomain_019bfb25-1885-7d70-bafe-c923b5aa325d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AssetSaleDomain_019bfb25-1885-7f8b-be5f-4e20f4d8b160" xlink:href="eqx-20251231.xsd#eqx_AssetSaleDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_eqx_AssetSaleAxis_019bfb25-1885-7d70-bafe-c923b5aa325d" xlink:to="loc_eqx_AssetSaleDomain_019bfb25-1885-7f8b-be5f-4e20f4d8b160" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NevadaAssetsMember_019bfb25-1885-73a8-b8c4-77313b0c80e8" xlink:href="eqx-20251231.xsd#eqx_NevadaAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_AssetSaleDomain_019bfb25-1885-7f8b-be5f-4e20f4d8b160" xlink:to="loc_eqx_NevadaAssetsMember_019bfb25-1885-73a8-b8c4-77313b0c80e8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis_019bfb25-1885-7606-adc4-17207dd1b2cb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019b47d6-435b-71a5-9bfd-b509c74a8054" xlink:to="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis_019bfb25-1885-7606-adc4-17207dd1b2cb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019bfb25-1885-7606-adc4-17207dd1b2cb_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis_019bfb25-1885-7606-adc4-17207dd1b2cb" xlink:to="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019bfb25-1885-7606-adc4-17207dd1b2cb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019bfb25-1885-7676-9b5d-86ddaef3c189" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis_019bfb25-1885-7606-adc4-17207dd1b2cb" xlink:to="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019bfb25-1885-7676-9b5d-86ddaef3c189" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisposalGroupsClassifiedAsHeldForSaleMember_019c2524-46b2-7285-bcf6-e1b24b0989c5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisposalGroupsClassifiedAsHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019bfb25-1885-7676-9b5d-86ddaef3c189" xlink:to="loc_ifrs-full_DisposalGroupsClassifiedAsHeldForSaleMember_019c2524-46b2-7285-bcf6-e1b24b0989c5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019bfb25-688a-77c1-ab5c-ba29557e6366" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019b47d6-435b-71a5-9bfd-b509c74a8054" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019bfb25-688a-77c1-ab5c-ba29557e6366" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019bfb25-688a-77c1-ab5c-ba29557e6366_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019bfb25-688a-77c1-ab5c-ba29557e6366" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019bfb25-688a-77c1-ab5c-ba29557e6366_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019bfb25-688a-7d82-b8c1-01303eaefd71" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019bfb25-688a-77c1-ab5c-ba29557e6366" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019bfb25-688a-7d82-b8c1-01303eaefd71" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019bfb25-688a-76d4-a6a9-daeaf0f5ee12" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019bfb25-688a-7d82-b8c1-01303eaefd71" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019bfb25-688a-76d4-a6a9-daeaf0f5ee12" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfAcquiredReceivablesAxis_019c0038-c15f-7332-bf94-1f7fdc9f4b99" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAcquiredReceivablesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019b47d6-435b-71a5-9bfd-b509c74a8054" xlink:to="loc_ifrs-full_ClassesOfAcquiredReceivablesAxis_019c0038-c15f-7332-bf94-1f7fdc9f4b99" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfAcquiredReceivablesDomain_019c0038-c15f-7332-bf94-1f7fdc9f4b99_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAcquiredReceivablesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfAcquiredReceivablesAxis_019c0038-c15f-7332-bf94-1f7fdc9f4b99" xlink:to="loc_ifrs-full_ClassesOfAcquiredReceivablesDomain_019c0038-c15f-7332-bf94-1f7fdc9f4b99_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfAcquiredReceivablesDomain_019c0038-c15f-787e-a676-de38461987f6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAcquiredReceivablesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfAcquiredReceivablesAxis_019c0038-c15f-7332-bf94-1f7fdc9f4b99" xlink:to="loc_ifrs-full_ClassesOfAcquiredReceivablesDomain_019c0038-c15f-787e-a676-de38461987f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PromissoryNoteReceivableMember_019c0038-c15f-789b-a14a-e25d0ea7ecfa" xlink:href="eqx-20251231.xsd#eqx_PromissoryNoteReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfAcquiredReceivablesDomain_019c0038-c15f-787e-a676-de38461987f6" xlink:to="loc_eqx_PromissoryNoteReceivableMember_019c0038-c15f-789b-a14a-e25d0ea7ecfa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_019c2569-e5b7-7a7c-aa5f-0d38a91e610b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019b47d6-435b-71a5-9bfd-b509c74a8054" xlink:to="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_019c2569-e5b7-7a7c-aa5f-0d38a91e610b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_019c2569-e5b7-7a7c-aa5f-0d38a91e610b_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_019c2569-e5b7-7a7c-aa5f-0d38a91e610b" xlink:to="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_019c2569-e5b7-7a7c-aa5f-0d38a91e610b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_019c2569-e5b7-7b2b-b21f-9f48fb854a26" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_019c2569-e5b7-7a7c-aa5f-0d38a91e610b" xlink:to="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_019c2569-e5b7-7b2b-b21f-9f48fb854a26" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherDisposalsOfAssetsMember_019c256b-0b41-78d1-bf63-820a06c11d74" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherDisposalsOfAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_019c2569-e5b7-7b2b-b21f-9f48fb854a26" xlink:to="loc_ifrs-full_OtherDisposalsOfAssetsMember_019c256b-0b41-78d1-bf63-820a06c11d74" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsAxis_019c36fc-8283-7c56-a2f4-ce3fa84541d5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019b47d6-435b-71a5-9bfd-b509c74a8054" xlink:to="loc_ifrs-full_JointOperationsAxis_019c36fc-8283-7c56-a2f4-ce3fa84541d5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsDomain_019c36fc-8283-7c56-a2f4-ce3fa84541d5_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_JointOperationsAxis_019c36fc-8283-7c56-a2f4-ce3fa84541d5" xlink:to="loc_ifrs-full_JointOperationsDomain_019c36fc-8283-7c56-a2f4-ce3fa84541d5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsDomain_019c36fc-8283-7652-b29e-4833bc03b493" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_JointOperationsAxis_019c36fc-8283-7c56-a2f4-ce3fa84541d5" xlink:to="loc_ifrs-full_JointOperationsDomain_019c36fc-8283-7652-b29e-4833bc03b493" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019c36fc-8283-7164-a6cc-680702c6f71a" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_JointOperationsDomain_019c36fc-8283-7652-b29e-4833bc03b493" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019c36fc-8283-7164-a6cc-680702c6f71a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PercentageOfVotingEquityInterestsAcquired_019bfb24-8500-7c80-bef7-c20acc62e2b6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PercentageOfVotingEquityInterestsAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_ifrs-full_PercentageOfVotingEquityInterestsAcquired_019bfb24-8500-7c80-bef7-c20acc62e2b6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedPerAcquireeShare_019bfb24-8500-7fb0-b41f-cac2cbed8e1d" xlink:href="eqx-20251231.xsd#eqx_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedPerAcquireeShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_eqx_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuableEntitySharesIssuedPerAcquireeShare_019bfb24-8500-7fb0-b41f-cac2cbed8e1d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NotesReceivablePrincipalAndInterestOutstanding_019bfb24-8500-78a9-9ec3-10acdfcdc16a" xlink:href="eqx-20251231.xsd#eqx_NotesReceivablePrincipalAndInterestOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_eqx_NotesReceivablePrincipalAndInterestOutstanding_019bfb24-8500-78a9-9ec3-10acdfcdc16a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NumberOfUnitsAcquiredInPrivatePlacementWarrants_019bfb24-8500-75b9-8465-68f3369aa161" xlink:href="eqx-20251231.xsd#eqx_NumberOfUnitsAcquiredInPrivatePlacementWarrants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_eqx_NumberOfUnitsAcquiredInPrivatePlacementWarrants_019bfb24-8500-75b9-8465-68f3369aa161" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CostOfSales_019bfb25-1885-761a-b2fd-74dd121a604f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CostOfSales"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_ifrs-full_CostOfSales_019bfb25-1885-761a-b2fd-74dd121a604f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AcquisitionrelatedCostsForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination_019bfb25-1885-7d78-bc4c-0b2b2fc6502d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AcquisitionrelatedCostsForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_ifrs-full_AcquisitionrelatedCostsForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination_019bfb25-1885-7d78-bc4c-0b2b2fc6502d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RevenueOfAcquiree_019bfb25-1885-7752-b9a5-85c8b5769996" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevenueOfAcquiree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_ifrs-full_RevenueOfAcquiree_019bfb25-1885-7752-b9a5-85c8b5769996" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossOfAcquiree_019bfb25-1885-787a-bd64-ffa7aa034656" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossOfAcquiree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_ifrs-full_ProfitLossOfAcquiree_019bfb25-1885-787a-bd64-ffa7aa034656" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RevenueOfCombinedEntity_019bfb25-1885-782d-ade9-97324cfeb00f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevenueOfCombinedEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_ifrs-full_RevenueOfCombinedEntity_019bfb25-1885-782d-ade9-97324cfeb00f" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossOfCombinedEntity_019bfb25-1885-7ef7-8a01-12f7b184a168" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossOfCombinedEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_ifrs-full_ProfitLossOfCombinedEntity_019bfb25-1885-7ef7-8a01-12f7b184a168" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationPercentOfInterestSold_019bfb25-1885-7f92-ae80-1d759e86bd7c" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationPercentOfInterestSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationPercentOfInterestSold_019bfb25-1885-7f92-ae80-1d759e86bd7c" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationConsideration_019bfb25-1885-7d1f-8c8b-a6f92934debd" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationConsideration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationConsideration_019bfb25-1885-7d1f-8c8b-a6f92934debd" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationConsiderationCash_019bfb25-1885-7962-b462-5a7a9d199187" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationConsiderationCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationConsiderationCash_019bfb25-1885-7962-b462-5a7a9d199187" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ConsiderationPaidReceived_019c0038-c15f-7c54-9437-7f2a0d41dac3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ConsiderationPaidReceived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_ifrs-full_ConsiderationPaidReceived_019c0038-c15f-7c54-9437-7f2a0d41dac3" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationConsiderationCommonShares_019bfb25-1885-72c9-a51b-50c98450649c" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationConsiderationCommonShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationConsiderationCommonShares_019bfb25-1885-72c9-a51b-50c98450649c" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationsPercentageOfAcquiredCommonSharesIssuedAndOutstanding_019bfb25-1885-78c6-93c9-c43274dcd9f0" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationsPercentageOfAcquiredCommonSharesIssuedAndOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationsPercentageOfAcquiredCommonSharesIssuedAndOutstanding_019bfb25-1885-78c6-93c9-c43274dcd9f0" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationConsiderationFairValueOfCommonSharesReceived_019bfb25-1885-7cd6-9207-68fbeaf18789" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationConsiderationFairValueOfCommonSharesReceived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationConsiderationFairValueOfCommonSharesReceived_019bfb25-1885-7cd6-9207-68fbeaf18789" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationConsiderationCommonSharesSharePrice_019bfb25-1885-7afa-98be-cdda94445b7b" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationConsiderationCommonSharesSharePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationConsiderationCommonSharesSharePrice_019bfb25-1885-7afa-98be-cdda94445b7b" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainLossRecognisedOnMeasurementToFairValueLessCostsToSellOrOnDisposalOfAssetsOrDisposalGroupsConstitutingDiscontinuedOperation_019bfb25-45bb-7611-9fc3-32daffd66fcc" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainLossRecognisedOnMeasurementToFairValueLessCostsToSellOrOnDisposalOfAssetsOrDisposalGroupsConstitutingDiscontinuedOperation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_ifrs-full_GainLossRecognisedOnMeasurementToFairValueLessCostsToSellOrOnDisposalOfAssetsOrDisposalGroupsConstitutingDiscontinuedOperation_019bfb25-45bb-7611-9fc3-32daffd66fcc" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NumberOfSharesSoldAtFairValue_019c2294-9e7e-72d7-95bc-3feaa9c5ae98" xlink:href="eqx-20251231.xsd#eqx_NumberOfSharesSoldAtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_eqx_NumberOfSharesSoldAtFairValue_019c2294-9e7e-72d7-95bc-3feaa9c5ae98" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ProceedsFromSharesSoldPostConsolidationBasis_019c2294-9e7e-77ce-9dd5-10097d71928d" xlink:href="eqx-20251231.xsd#eqx_ProceedsFromSharesSoldPostConsolidationBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_eqx_ProceedsFromSharesSoldPostConsolidationBasis_019c2294-9e7e-77ce-9dd5-10097d71928d" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ProportionOfOwnershipInterestInJointOperationByUnconsolidatedEntity_019bfb25-688a-7e1b-8ceb-5e4df4ad0284" xlink:href="eqx-20251231.xsd#eqx_ProportionOfOwnershipInterestInJointOperationByUnconsolidatedEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_eqx_ProportionOfOwnershipInterestInJointOperationByUnconsolidatedEntity_019bfb25-688a-7e1b-8ceb-5e4df4ad0284" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred_019bfb25-688a-7c1d-a585-b28a9cb5e7cd" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred_019bfb25-688a-7c1d-a585-b28a9cb5e7cd" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_019bfb25-688a-75b4-baf3-641ca1b41575" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfOwnershipInterestInSubsidiary"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_019bfb25-688a-75b4-baf3-641ca1b41575" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestInJointOperation_019bfb25-688a-7412-a6c9-eaadda53d2c9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfOwnershipInterestInJointOperation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_ifrs-full_ProportionOfOwnershipInterestInJointOperation_019bfb25-688a-7412-a6c9-eaadda53d2c9" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainRecognisedInBargainPurchaseTransaction_019bfb25-b852-7fe0-9111-8d0db332ff7c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainRecognisedInBargainPurchaseTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_ifrs-full_GainRecognisedInBargainPurchaseTransaction_019bfb25-b852-7fe0-9111-8d0db332ff7c" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReclassificationAdjustmentsOnExchangeDifferencesOnTranslationNetOfTax_019bfb25-b852-7652-b1ff-9f28f30e4e0f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReclassificationAdjustmentsOnExchangeDifferencesOnTranslationNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_ifrs-full_ReclassificationAdjustmentsOnExchangeDifferencesOnTranslationNetOfTax_019bfb25-b852-7652-b1ff-9f28f30e4e0f" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GainLossRecognizedAsAResultOfRemeasuringToFairValueEquityInterestInAcquireeHeldByAcquirerBeforeBusinessCombinationNetOfTax_019bfb25-b852-71ac-b376-841c9f5a2180" xlink:href="eqx-20251231.xsd#eqx_GainLossRecognizedAsAResultOfRemeasuringToFairValueEquityInterestInAcquireeHeldByAcquirerBeforeBusinessCombinationNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_eqx_GainLossRecognizedAsAResultOfRemeasuringToFairValueEquityInterestInAcquireeHeldByAcquirerBeforeBusinessCombinationNetOfTax_019bfb25-b852-71ac-b376-841c9f5a2180" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GainLossRecognizedAsAResultOfRemeasuringToFairValueEquityInterestInAcquireeHeldByAcquirerBeforeBusinessCombinationDeferredIncomeTaxExpense_019bfb25-b852-7649-b89b-e3c0456283d9" xlink:href="eqx-20251231.xsd#eqx_GainLossRecognizedAsAResultOfRemeasuringToFairValueEquityInterestInAcquireeHeldByAcquirerBeforeBusinessCombinationDeferredIncomeTaxExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_eqx_GainLossRecognizedAsAResultOfRemeasuringToFairValueEquityInterestInAcquireeHeldByAcquirerBeforeBusinessCombinationDeferredIncomeTaxExpense_019bfb25-b852-7649-b89b-e3c0456283d9" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationCommonSharesConsolidationRatio_019c2570-44ee-7772-98dd-b43a6d000dc1" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationCommonSharesConsolidationRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019bfb24-8500-7f9b-80e9-5edd78bc1ccb" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationCommonSharesConsolidationRatio_019c2570-44ee-7772-98dd-b43a6d000dc1" xlink:type="arc" order="29"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/CORPORATETRANSACTIONSScheduleofAcquisitionDateFairValueOfTheConsiderationTransferredDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#CORPORATETRANSACTIONSScheduleofAcquisitionDateFairValueOfTheConsiderationTransferredDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/CORPORATETRANSACTIONSScheduleofAcquisitionDateFairValueOfTheConsiderationTransferredDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfBusinessCombinationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019ba19d-d740-7015-9818-9d60d8447bda" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfBusinessCombinationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019ba19d-d740-7015-9818-9d60d8447bda" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsAxis_019ba2fe-cd0c-730d-89a0-85eea08f2e75" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019ba19d-d740-7015-9818-9d60d8447bda" xlink:to="loc_ifrs-full_JointOperationsAxis_019ba2fe-cd0c-730d-89a0-85eea08f2e75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsDomain_019ba2fe-cd0c-730d-89a0-85eea08f2e75_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_JointOperationsAxis_019ba2fe-cd0c-730d-89a0-85eea08f2e75" xlink:to="loc_ifrs-full_JointOperationsDomain_019ba2fe-cd0c-730d-89a0-85eea08f2e75_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsDomain_019ba2fe-cd0c-7d10-ba4f-361cfd4b8e9d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_JointOperationsAxis_019ba2fe-cd0c-730d-89a0-85eea08f2e75" xlink:to="loc_ifrs-full_JointOperationsDomain_019ba2fe-cd0c-7d10-ba4f-361cfd4b8e9d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019ba2fe-cd0c-7066-8b13-433c230920b0" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_JointOperationsDomain_019ba2fe-cd0c-7d10-ba4f-361cfd4b8e9d" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019ba2fe-cd0c-7066-8b13-433c230920b0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019ba19d-d740-7540-a967-f11a3b6165c2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019ba19d-d740-7015-9818-9d60d8447bda" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019ba19d-d740-7540-a967-f11a3b6165c2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019ba19d-d740-7540-a967-f11a3b6165c2_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019ba19d-d740-7540-a967-f11a3b6165c2" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019ba19d-d740-7540-a967-f11a3b6165c2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019ba19d-d740-7288-9886-6a9bfdec63a8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019ba19d-d740-7540-a967-f11a3b6165c2" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019ba19d-d740-7288-9886-6a9bfdec63a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CalibreAcquisitionMember_019ba19d-d740-7123-ba8c-5a2c6b9f7c5d" xlink:href="eqx-20251231.xsd#eqx_CalibreAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019ba19d-d740-7288-9886-6a9bfdec63a8" xlink:to="loc_eqx_CalibreAcquisitionMember_019ba19d-d740-7123-ba8c-5a2c6b9f7c5d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PAGHoldingCorpPAGHMember_019ba2f4-223c-7558-a22c-4acac26d10e1" xlink:href="eqx-20251231.xsd#eqx_PAGHoldingCorpPAGHMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019ba19d-d740-7288-9886-6a9bfdec63a8" xlink:to="loc_eqx_PAGHoldingCorpPAGHMember_019ba2f4-223c-7558-a22c-4acac26d10e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashTransferred_019ba2f4-223c-72f9-b4c9-d6ce082ca198" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashTransferred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_ifrs-full_CashTransferred_019ba2f4-223c-72f9-b4c9-d6ce082ca198" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LiabilitiesIncurred_019ba2f4-223c-74d6-9121-086bf9e203d9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LiabilitiesIncurred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_ifrs-full_LiabilitiesIncurred_019ba2f4-223c-74d6-9121-086bf9e203d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityInterestsOfAcquirer_019ba19d-d740-74c2-92b5-cf69f88b41f6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EquityInterestsOfAcquirer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_ifrs-full_EquityInterestsOfAcquirer_019ba19d-d740-74c2-92b5-cf69f88b41f6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_OptionConsiderationOfAcquirer_019ba19d-d740-7955-bf58-df055afd4646" xlink:href="eqx-20251231.xsd#eqx_OptionConsiderationOfAcquirer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_eqx_OptionConsiderationOfAcquirer_019ba19d-d740-7955-bf58-df055afd4646" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SettlementOfConvertibleNotesReceivableAndWarrants_019ba19d-d740-75d3-815e-2cd32b9fe9af" xlink:href="eqx-20251231.xsd#eqx_SettlementOfConvertibleNotesReceivableAndWarrants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_eqx_SettlementOfConvertibleNotesReceivableAndWarrants_019ba19d-d740-75d3-815e-2cd32b9fe9af" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred_019ba19d-d740-7dea-b7f5-9b0ab7206590" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred_019ba19d-d740-7dea-b7f5-9b0ab7206590" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AcquisitiondateFairValueOfEquityInterestInAcquireeHeldByAcquirerImmediatelyBeforeAcquisitionDate_019ba2f4-223c-7bb2-98bd-d36514b50ff5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AcquisitiondateFairValueOfEquityInterestInAcquireeHeldByAcquirerImmediatelyBeforeAcquisitionDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_ifrs-full_AcquisitiondateFairValueOfEquityInterestInAcquireeHeldByAcquirerImmediatelyBeforeAcquisitionDate_019ba2f4-223c-7bb2-98bd-d36514b50ff5" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_TotalConsiderationTransferredAndFairValueOfEquityInterest_019ba2f4-223c-7cac-80df-55c84c09d06b" xlink:href="eqx-20251231.xsd#eqx_TotalConsiderationTransferredAndFairValueOfEquityInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_eqx_TotalConsiderationTransferredAndFairValueOfEquityInterest_019ba2f4-223c-7cac-80df-55c84c09d06b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LoansAndAdvancesAtAmortisedCost_019ba2ff-1ae9-7003-8911-9782cdd76230" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LoansAndAdvancesAtAmortisedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_ifrs-full_LoansAndAdvancesAtAmortisedCost_019ba2ff-1ae9-7003-8911-9782cdd76230" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfInstrumentsOrInterestsIssuedOrIssuable_019ba2ff-1ae9-754f-8d1d-2a16fe136925" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfInstrumentsOrInterestsIssuedOrIssuable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_ifrs-full_NumberOfInstrumentsOrInterestsIssuedOrIssuable_019ba2ff-1ae9-754f-8d1d-2a16fe136925" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NumberOfInstrumentsOrInterestsIssuedOrIssuablePricePerShare_019ba2ff-1ae9-7631-8f5f-8d0eb5813169" xlink:href="eqx-20251231.xsd#eqx_NumberOfInstrumentsOrInterestsIssuedOrIssuablePricePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_eqx_NumberOfInstrumentsOrInterestsIssuedOrIssuablePricePerShare_019ba2ff-1ae9-7631-8f5f-8d0eb5813169" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NumberOfReplacementStockOptionsIssued_019ba303-705f-7bdd-be55-afd6ef0e57f1" xlink:href="eqx-20251231.xsd#eqx_NumberOfReplacementStockOptionsIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_eqx_NumberOfReplacementStockOptionsIssued_019ba303-705f-7bdd-be55-afd6ef0e57f1" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ExercisePriceShareOptionsGranted2019_019ba303-705f-7641-9104-96a7fae9b93d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ExercisePriceShareOptionsGranted2019"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_ifrs-full_ExercisePriceShareOptionsGranted2019_019ba303-705f-7641-9104-96a7fae9b93d" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_WeightedAverageSharePriceShareOptionsGranted2019_019bfb40-17cd-7156-83a1-adc1e972d010" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageSharePriceShareOptionsGranted2019"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_ifrs-full_WeightedAverageSharePriceShareOptionsGranted2019_019bfb40-17cd-7156-83a1-adc1e972d010" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfExpectedVolatilityShareOptionsGranted_019ba303-705f-7b09-b178-665fb9c75f9e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfExpectedVolatilityShareOptionsGranted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_ifrs-full_DescriptionOfExpectedVolatilityShareOptionsGranted_019ba303-705f-7b09-b178-665fb9c75f9e" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ExpectedTermShareOptionsGranted_019ba303-705f-77e8-8c81-83d3704f7440" xlink:href="eqx-20251231.xsd#eqx_ExpectedTermShareOptionsGranted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_eqx_ExpectedTermShareOptionsGranted_019ba303-705f-77e8-8c81-83d3704f7440" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ExpectedDividendAsPercentageShareOptionsGranted_019ba303-705f-7ecc-a40d-732ac611fdea" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ExpectedDividendAsPercentageShareOptionsGranted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_ifrs-full_ExpectedDividendAsPercentageShareOptionsGranted_019ba303-705f-7ecc-a40d-732ac611fdea" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfRiskFreeInterestRateShareOptionsGranted_019ba303-705f-7312-8785-4744debacba6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfRiskFreeInterestRateShareOptionsGranted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba19d-d740-71a2-a8fe-1f7f44ba4ffb" xlink:to="loc_ifrs-full_DescriptionOfRiskFreeInterestRateShareOptionsGranted_019ba303-705f-7312-8785-4744debacba6" xlink:type="arc" order="17"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/CORPORATETRANSACTIONSScheduleofAcquisitionDateFairValuesAndRecognizedAmountsOfTheAssetsAcquiredAndLiabilitiesDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#CORPORATETRANSACTIONSScheduleofAcquisitionDateFairValuesAndRecognizedAmountsOfTheAssetsAcquiredAndLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/CORPORATETRANSACTIONSScheduleofAcquisitionDateFairValuesAndRecognizedAmountsOfTheAssetsAcquiredAndLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfBusinessCombinationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019b47d6-435b-7f86-b44c-6ca6797207c3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfBusinessCombinationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019b47d6-435b-7f86-b44c-6ca6797207c3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019b47d6-435b-7dc4-9211-3f99dbd2886a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019b47d6-435b-7f86-b44c-6ca6797207c3" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019b47d6-435b-7dc4-9211-3f99dbd2886a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b47d6-435b-7dc4-9211-3f99dbd2886a_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b47d6-435b-7dc4-9211-3f99dbd2886a" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b47d6-435b-7dc4-9211-3f99dbd2886a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b47d6-435b-71e2-96ff-1f457da757f1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b47d6-435b-7dc4-9211-3f99dbd2886a" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b47d6-435b-71e2-96ff-1f457da757f1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CalibreAcquisitionMember_019ba301-f417-78ed-8445-737936ddb897" xlink:href="eqx-20251231.xsd#eqx_CalibreAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b47d6-435b-71e2-96ff-1f457da757f1" xlink:to="loc_eqx_CalibreAcquisitionMember_019ba301-f417-78ed-8445-737936ddb897" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PAGHoldingCorpPAGHMember_019b47d6-435b-7607-96b7-99ce89845e9a" xlink:href="eqx-20251231.xsd#eqx_PAGHoldingCorpPAGHMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b47d6-435b-71e2-96ff-1f457da757f1" xlink:to="loc_eqx_PAGHoldingCorpPAGHMember_019b47d6-435b-7607-96b7-99ce89845e9a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfContractsAxis_019b47d6-435b-74f9-9756-1dec70c9cf32" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfContractsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019b47d6-435b-7f86-b44c-6ca6797207c3" xlink:to="loc_ifrs-full_TypesOfContractsAxis_019b47d6-435b-74f9-9756-1dec70c9cf32" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfContractsDomain_019b47d6-435b-74f9-9756-1dec70c9cf32_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfContractsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfContractsAxis_019b47d6-435b-74f9-9756-1dec70c9cf32" xlink:to="loc_ifrs-full_TypesOfContractsDomain_019b47d6-435b-74f9-9756-1dec70c9cf32_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfContractsDomain_019b47d6-435b-7c4c-903f-2db8e8a37077" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfContractsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfContractsAxis_019b47d6-435b-74f9-9756-1dec70c9cf32" xlink:to="loc_ifrs-full_TypesOfContractsDomain_019b47d6-435b-7c4c-903f-2db8e8a37077" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GoldPrepayTransactionsMember_019ba301-f417-721e-bfe5-f8d1de437686" xlink:href="eqx-20251231.xsd#eqx_GoldPrepayTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfContractsDomain_019b47d6-435b-7c4c-903f-2db8e8a37077" xlink:to="loc_eqx_GoldPrepayTransactionsMember_019ba301-f417-721e-bfe5-f8d1de437686" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameAxis_019ba301-f417-73b1-8a86-d2b4545f9aa6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019b47d6-435b-7f86-b44c-6ca6797207c3" xlink:to="loc_ifrs-full_BorrowingsByNameAxis_019ba301-f417-73b1-8a86-d2b4545f9aa6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019ba301-f417-73b1-8a86-d2b4545f9aa6_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019ba301-f417-73b1-8a86-d2b4545f9aa6" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019ba301-f417-73b1-8a86-d2b4545f9aa6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019ba301-f417-717c-9105-eb23a7e0e139" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019ba301-f417-73b1-8a86-d2b4545f9aa6" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019ba301-f417-717c-9105-eb23a7e0e139" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EquipmentFacilityMember_019ba301-f417-7c57-89ed-9b7cc7bf1124" xlink:href="eqx-20251231.xsd#eqx_EquipmentFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019ba301-f417-717c-9105-eb23a7e0e139" xlink:to="loc_eqx_EquipmentFacilityMember_019ba301-f417-7c57-89ed-9b7cc7bf1124" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashAndCashEquivalentsRecognisedAsOfAcquisitionDate_019b47d6-435b-75e0-ae41-5ccfc228395e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashAndCashEquivalentsRecognisedAsOfAcquisitionDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_ifrs-full_CashAndCashEquivalentsRecognisedAsOfAcquisitionDate_019b47d6-435b-75e0-ae41-5ccfc228395e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialAssetsRecognisedAsOfAcquisitionDate_019b47d6-435b-7289-b75c-baaea1b66114" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssetsRecognisedAsOfAcquisitionDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_ifrs-full_FinancialAssetsRecognisedAsOfAcquisitionDate_019b47d6-435b-7289-b75c-baaea1b66114" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InventoryRecognisedAsOfAcquisitionDate_019b47d6-435b-738f-a873-b4cad87d1695" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InventoryRecognisedAsOfAcquisitionDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_ifrs-full_InventoryRecognisedAsOfAcquisitionDate_019b47d6-435b-738f-a873-b4cad87d1695" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MeasurementPeriodAdjustmentsRecognisedForInventories_019b47d6-435b-751f-bc56-d35164c73c8e" xlink:href="eqx-20251231.xsd#eqx_MeasurementPeriodAdjustmentsRecognisedForInventories"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_eqx_MeasurementPeriodAdjustmentsRecognisedForInventories_019b47d6-435b-751f-bc56-d35164c73c8e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_RestrictedCashRecognizedAsOfAcquisitionDate_019b47d6-435b-76ea-9a3f-3155675d17c3" xlink:href="eqx-20251231.xsd#eqx_RestrictedCashRecognizedAsOfAcquisitionDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_eqx_RestrictedCashRecognizedAsOfAcquisitionDate_019b47d6-435b-76ea-9a3f-3155675d17c3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate_019b47d6-435b-739e-b7ad-c462ab31f8fb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_ifrs-full_PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate_019b47d6-435b-739e-b7ad-c462ab31f8fb" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MeasurementPeriodAdjustmentsRecognisedForMineralPropertiesPlantAndEquipment_019b47d6-435b-7d5d-a15f-c5f6c4ad319f" xlink:href="eqx-20251231.xsd#eqx_MeasurementPeriodAdjustmentsRecognisedForMineralPropertiesPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_eqx_MeasurementPeriodAdjustmentsRecognisedForMineralPropertiesPlantAndEquipment_019b47d6-435b-7d5d-a15f-c5f6c4ad319f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationOtherAssets_019b47d6-435b-791c-b8d2-999dbefbbe0a" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationOtherAssets_019b47d6-435b-791c-b8d2-999dbefbbe0a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MeasurementPeriodAdjustmentsRecognisedForOtherAssets_019c36f7-2599-74d4-a4e8-88ab4389ca76" xlink:href="eqx-20251231.xsd#eqx_MeasurementPeriodAdjustmentsRecognisedForOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_eqx_MeasurementPeriodAdjustmentsRecognisedForOtherAssets_019c36f7-2599-74d4-a4e8-88ab4389ca76" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialLiabilitiesRecognisedAsOfAcquisitionDate_019b47d6-435b-7d5c-ace2-c0153b8ecc6d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilitiesRecognisedAsOfAcquisitionDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_ifrs-full_FinancialLiabilitiesRecognisedAsOfAcquisitionDate_019b47d6-435b-7d5c-ace2-c0153b8ecc6d" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MeasurementPeriodAdjustmentsAccountsPayableAndAccruedLiabilities_019ba1bd-b6d5-7d7a-99da-0fb9a84f1cae" xlink:href="eqx-20251231.xsd#eqx_MeasurementPeriodAdjustmentsAccountsPayableAndAccruedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_eqx_MeasurementPeriodAdjustmentsAccountsPayableAndAccruedLiabilities_019ba1bd-b6d5-7d7a-99da-0fb9a84f1cae" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_LoansAndBorrowingsRecognisedAsOfAcquisitionDate_019ba27c-50f2-7305-aae0-c176ef6af4b3" xlink:href="eqx-20251231.xsd#eqx_LoansAndBorrowingsRecognisedAsOfAcquisitionDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_eqx_LoansAndBorrowingsRecognisedAsOfAcquisitionDate_019ba27c-50f2-7305-aae0-c176ef6af4b3" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MeasurementPeriodAdjustmentsLoansAndBorrowings_019ba27c-f72f-77f2-9ff1-f4600993f6a6" xlink:href="eqx-20251231.xsd#eqx_MeasurementPeriodAdjustmentsLoansAndBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_eqx_MeasurementPeriodAdjustmentsLoansAndBorrowings_019ba27c-f72f-77f2-9ff1-f4600993f6a6" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DeferredRevenueRecognisedAsOfAcquisitionDate_019b47d6-435b-7ded-a5d3-cdb53e7c7cc4" xlink:href="eqx-20251231.xsd#eqx_DeferredRevenueRecognisedAsOfAcquisitionDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_eqx_DeferredRevenueRecognisedAsOfAcquisitionDate_019b47d6-435b-7ded-a5d3-cdb53e7c7cc4" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeLiabilitiesRecognisedAsOfAcquisitionDate_019ba27b-08c1-75bf-9e20-172f771f86c8" xlink:href="eqx-20251231.xsd#eqx_DerivativeLiabilitiesRecognisedAsOfAcquisitionDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_eqx_DerivativeLiabilitiesRecognisedAsOfAcquisitionDate_019ba27b-08c1-75bf-9e20-172f771f86c8" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities_019ba1b6-438a-7eb7-9efa-cffc43a3fc79" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_ifrs-full_DerivativeFinancialLiabilities_019ba1b6-438a-7eb7-9efa-cffc43a3fc79" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationReclamationAndClosureCostProvisions_019b47d6-435b-7af5-a642-ea5303f5a02d" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationReclamationAndClosureCostProvisions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationReclamationAndClosureCostProvisions_019b47d6-435b-7af5-a642-ea5303f5a02d" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MeasurementPeriodAdjustmentsRecognisedReclamationAndClosureCostProvisions_019c36f8-d26f-78a1-b4bb-72bb983fc7f1" xlink:href="eqx-20251231.xsd#eqx_MeasurementPeriodAdjustmentsRecognisedReclamationAndClosureCostProvisions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_eqx_MeasurementPeriodAdjustmentsRecognisedReclamationAndClosureCostProvisions_019c36f8-d26f-78a1-b4bb-72bb983fc7f1" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DeferredTaxLiabilitiesRecognisedAsOfAcquisitionDate_019b47d6-435b-7843-b2d8-d3a66de9b9a2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DeferredTaxLiabilitiesRecognisedAsOfAcquisitionDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_ifrs-full_DeferredTaxLiabilitiesRecognisedAsOfAcquisitionDate_019b47d6-435b-7843-b2d8-d3a66de9b9a2" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MeasurementPeriodAdjustmentsRecognisedForDeferredTaxLiabilities_019b47d6-435b-75b4-9e1a-566940bd8e96" xlink:href="eqx-20251231.xsd#eqx_MeasurementPeriodAdjustmentsRecognisedForDeferredTaxLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_eqx_MeasurementPeriodAdjustmentsRecognisedForDeferredTaxLiabilities_019b47d6-435b-75b4-9e1a-566940bd8e96" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities_019b47d6-435b-7548-8236-d54dd5257d5d" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities_019b47d6-435b-7548-8236-d54dd5257d5d" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed_019b47d6-435b-776d-b914-b5c810596110" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed_019b47d6-435b-776d-b914-b5c810596110" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Inventories_019bfb35-1079-767d-8a00-f7321346a51a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Inventories"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_ifrs-full_Inventories_019bfb35-1079-767d-8a00-f7321346a51a" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentInventories_019bfb35-1079-79b7-bd1f-f880b82b2abb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentInventories"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_ifrs-full_NoncurrentInventories_019bfb35-1079-79b7-bd1f-f880b82b2abb" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityGoldOuncesDeliveredPerMonth_019bfb35-1079-7b1b-ad6e-6041f309b4d4" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityGoldOuncesDeliveredPerMonth"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_eqx_ContractLiabilityGoldOuncesDeliveredPerMonth_019bfb35-1079-7b1b-ad6e-6041f309b4d4" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Borrowings_019bfb35-1079-75eb-88ba-57d47d1ad481" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Borrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_ifrs-full_Borrowings_019bfb35-1079-75eb-88ba-57d47d1ad481" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShorttermBorrowings_019bfb35-1079-7947-bf2f-ae4a1be19d7b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShorttermBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_ifrs-full_ShorttermBorrowings_019bfb35-1079-7947-bf2f-ae4a1be19d7b" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentPortionOfLongtermBorrowings_019bfb35-1079-7893-b886-0469a8430dc1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentPortionOfLongtermBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019b47d6-435b-7dea-afd6-aba97789a6e5" xlink:to="loc_ifrs-full_CurrentPortionOfLongtermBorrowings_019bfb35-1079-7893-b886-0469a8430dc1" xlink:type="arc" order="27"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/CORPORATETRANSACTIONSScheduleofAssetsAndLiabilitiesHeldforSaleDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#CORPORATETRANSACTIONSScheduleofAssetsAndLiabilitiesHeldforSaleDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/CORPORATETRANSACTIONSScheduleofAssetsAndLiabilitiesHeldforSaleDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba1a8-02ca-7b80-bcdb-b7bc3c94300c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfBusinessCombinationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019ba1a8-02ca-748b-9cc3-4da2ba8ff78a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfBusinessCombinationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba1a8-02ca-7b80-bcdb-b7bc3c94300c" xlink:to="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019ba1a8-02ca-748b-9cc3-4da2ba8ff78a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AssetSaleAxis_019ba1a8-02ca-7a89-ba58-df165e8dd816" xlink:href="eqx-20251231.xsd#eqx_AssetSaleAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019ba1a8-02ca-748b-9cc3-4da2ba8ff78a" xlink:to="loc_eqx_AssetSaleAxis_019ba1a8-02ca-7a89-ba58-df165e8dd816" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AssetSaleDomain_019ba1a8-02ca-7a89-ba58-df165e8dd816_default" xlink:href="eqx-20251231.xsd#eqx_AssetSaleDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_eqx_AssetSaleAxis_019ba1a8-02ca-7a89-ba58-df165e8dd816" xlink:to="loc_eqx_AssetSaleDomain_019ba1a8-02ca-7a89-ba58-df165e8dd816_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AssetSaleDomain_019ba1a8-02ca-7d0b-bde7-990673f04c53" xlink:href="eqx-20251231.xsd#eqx_AssetSaleDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_eqx_AssetSaleAxis_019ba1a8-02ca-7a89-ba58-df165e8dd816" xlink:to="loc_eqx_AssetSaleDomain_019ba1a8-02ca-7d0b-bde7-990673f04c53" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NevadaAssetsMember_019ba1a8-02ca-772b-b418-720666106ff9" xlink:href="eqx-20251231.xsd#eqx_NevadaAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_AssetSaleDomain_019ba1a8-02ca-7d0b-bde7-990673f04c53" xlink:to="loc_eqx_NevadaAssetsMember_019ba1a8-02ca-772b-b418-720666106ff9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis_019beeaf-9104-7843-b8b1-974e5d3cb42a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsTable_019ba1a8-02ca-748b-9cc3-4da2ba8ff78a" xlink:to="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis_019beeaf-9104-7843-b8b1-974e5d3cb42a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019beeaf-9104-7843-b8b1-974e5d3cb42a_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis_019beeaf-9104-7843-b8b1-974e5d3cb42a" xlink:to="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019beeaf-9104-7843-b8b1-974e5d3cb42a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019c2524-b827-795b-867a-ec298fa9c33e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis_019beeaf-9104-7843-b8b1-974e5d3cb42a" xlink:to="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019c2524-b827-795b-867a-ec298fa9c33e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisposalGroupsClassifiedAsHeldForSaleMember_019c2524-b827-7d42-aefe-4e803d85295f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisposalGroupsClassifiedAsHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019c2524-b827-795b-867a-ec298fa9c33e" xlink:to="loc_ifrs-full_DisposalGroupsClassifiedAsHeldForSaleMember_019c2524-b827-7d42-aefe-4e803d85295f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_019ba1a8-02ca-7660-a357-16ad8330cb01" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba1a8-02ca-7b80-bcdb-b7bc3c94300c" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_019ba1a8-02ca-7660-a357-16ad8330cb01" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationInventories_019beeba-9912-794a-a429-05507bb6b9ad" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationInventories"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba1a8-02ca-7b80-bcdb-b7bc3c94300c" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationInventories_019beeba-9912-794a-a429-05507bb6b9ad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationMineralPropertiesPlantAndEquipment_019ba1a8-02ca-765e-85ef-08d3a139fb64" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationMineralPropertiesPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba1a8-02ca-7b80-bcdb-b7bc3c94300c" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationMineralPropertiesPlantAndEquipment_019ba1a8-02ca-765e-85ef-08d3a139fb64" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationOtherAssets_019ba1a8-02ca-786e-a89e-20c181064891" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba1a8-02ca-7b80-bcdb-b7bc3c94300c" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationOtherAssets_019ba1a8-02ca-786e-a89e-20c181064891" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationAssets_019ba1a8-02ca-7c51-b89b-63f49dbcedfd" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba1a8-02ca-7b80-bcdb-b7bc3c94300c" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationAssets_019ba1a8-02ca-7c51-b89b-63f49dbcedfd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationReclamationAndClosureCostProvisions_019ba1a8-02ca-7f1b-bee5-6532a69ad2ca" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationReclamationAndClosureCostProvisions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba1a8-02ca-7b80-bcdb-b7bc3c94300c" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationReclamationAndClosureCostProvisions_019ba1a8-02ca-7f1b-bee5-6532a69ad2ca" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationDeferredIncomeTaxLiabilities_019ba1a8-02ca-747b-8194-1e92bacf032a" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationDeferredIncomeTaxLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba1a8-02ca-7b80-bcdb-b7bc3c94300c" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationDeferredIncomeTaxLiabilities_019ba1a8-02ca-747b-8194-1e92bacf032a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities_019ba1a8-02ca-7c01-8c6b-c9ac39a38236" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba1a8-02ca-7b80-bcdb-b7bc3c94300c" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities_019ba1a8-02ca-7c01-8c6b-c9ac39a38236" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationLiabilities_019ba1a8-02ca-79ad-8d80-c0abce4aaac5" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba1a8-02ca-7b80-bcdb-b7bc3c94300c" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationLiabilities_019ba1a8-02ca-79ad-8d80-c0abce4aaac5" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationNetAssetsLiabilities_019ba1a8-02ca-7b7a-b69c-2288ed94f34c" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationNetAssetsLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfBusinessCombinationsLineItems_019ba1a8-02ca-7b80-bcdb-b7bc3c94300c" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationNetAssetsLiabilities_019ba1a8-02ca-7b7a-b69c-2288ed94f34c" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/MARKETABLESECURITIESAdditionalInformationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#MARKETABLESECURITIESAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/MARKETABLESECURITIESAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435b-701a-917e-6786261c8b8b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_019b47d6-435b-796d-b597-c25c66fec8b6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435b-701a-917e-6786261c8b8b" xlink:to="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_019b47d6-435b-796d-b597-c25c66fec8b6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInAssociatesAxis_019b47d6-435b-7c9c-bda6-074544175eb9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInAssociatesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_019b47d6-435b-796d-b597-c25c66fec8b6" xlink:to="loc_ifrs-full_SignificantInvestmentsInAssociatesAxis_019b47d6-435b-7c9c-bda6-074544175eb9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019b47d6-435b-7c9c-bda6-074544175eb9_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInAssociatesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInAssociatesAxis_019b47d6-435b-7c9c-bda6-074544175eb9" xlink:to="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019b47d6-435b-7c9c-bda6-074544175eb9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019b47d6-435b-7cb3-a2ed-61458953fe8f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInAssociatesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInAssociatesAxis_019b47d6-435b-7c9c-bda6-074544175eb9" xlink:to="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019b47d6-435b-7cb3-a2ed-61458953fe8f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_VersametMember_019b9b57-fc00-7228-874c-62b6949e0753" xlink:href="eqx-20251231.xsd#eqx_VersametMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019b47d6-435b-7cb3-a2ed-61458953fe8f" xlink:to="loc_eqx_VersametMember_019b9b57-fc00-7228-874c-62b6949e0753" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SolarisResourcesIncMember_019b47d6-435b-7d66-99c8-0c1c8ebadd7e" xlink:href="eqx-20251231.xsd#eqx_SolarisResourcesIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019b47d6-435b-7cb3-a2ed-61458953fe8f" xlink:to="loc_eqx_SolarisResourcesIncMember_019b47d6-435b-7d66-99c8-0c1c8ebadd7e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-435b-72e2-afa6-753c1a3dd497" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_019b47d6-435b-796d-b597-c25c66fec8b6" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-435b-72e2-afa6-753c1a3dd497" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-435b-72e2-afa6-753c1a3dd497_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-435b-72e2-afa6-753c1a3dd497" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-435b-72e2-afa6-753c1a3dd497_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-435b-758f-91c8-d8c6fe9df5f5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-435b-72e2-afa6-753c1a3dd497" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-435b-758f-91c8-d8c6fe9df5f5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SolarisWarrantLiabilityMember_019b47d6-435b-73a5-92be-3130adb881c6" xlink:href="eqx-20251231.xsd#eqx_SolarisWarrantLiabilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-435b-758f-91c8-d8c6fe9df5f5" xlink:to="loc_eqx_SolarisWarrantLiabilityMember_019b47d6-435b-73a5-92be-3130adb881c6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-435b-7dd7-bf02-a144b5655920" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_019b47d6-435b-796d-b597-c25c66fec8b6" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-435b-7dd7-bf02-a144b5655920" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-435b-7dd7-bf02-a144b5655920_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-435b-7dd7-bf02-a144b5655920" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-435b-7dd7-bf02-a144b5655920_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-435b-77bd-8b12-f27d290919ad" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-435b-7dd7-bf02-a144b5655920" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-435b-77bd-8b12-f27d290919ad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SharePurchaseWarrantsMember_019b47d6-435b-7304-9aeb-d332bfa0609b" xlink:href="eqx-20251231.xsd#eqx_SharePurchaseWarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-435b-77bd-8b12-f27d290919ad" xlink:to="loc_eqx_SharePurchaseWarrantsMember_019b47d6-435b-7304-9aeb-d332bfa0609b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MeasurementAxis_019b47d6-435b-7d33-9ae8-d1a6adbcba20" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MeasurementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_019b47d6-435b-796d-b597-c25c66fec8b6" xlink:to="loc_ifrs-full_MeasurementAxis_019b47d6-435b-7d33-9ae8-d1a6adbcba20" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MeasurementDomain_019b47d6-435b-7d33-9ae8-d1a6adbcba20_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MeasurementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_MeasurementAxis_019b47d6-435b-7d33-9ae8-d1a6adbcba20" xlink:to="loc_ifrs-full_MeasurementDomain_019b47d6-435b-7d33-9ae8-d1a6adbcba20_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MeasurementDomain_019b47d6-435b-7ec4-8a79-b35b3ff22923" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MeasurementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_MeasurementAxis_019b47d6-435b-7d33-9ae8-d1a6adbcba20" xlink:to="loc_ifrs-full_MeasurementDomain_019b47d6-435b-7ec4-8a79-b35b3ff22923" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AtFairValueMember_019b47d6-435b-7cc1-909e-902247c5f7a5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AtFairValueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_MeasurementDomain_019b47d6-435b-7ec4-8a79-b35b3ff22923" xlink:to="loc_ifrs-full_AtFairValueMember_019b47d6-435b-7cc1-909e-902247c5f7a5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InvestmentsInAssociates_019b9b5d-bcfe-7e33-9496-801bef1bff71" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InvestmentsInAssociates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435b-701a-917e-6786261c8b8b" xlink:to="loc_ifrs-full_InvestmentsInAssociates_019b9b5d-bcfe-7e33-9496-801bef1bff71" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_InvestmentsInAssociatesReportedInSeparateFinancialStatementsNonCurrent_019beedc-8ac9-7a3d-aa1d-00e41c99657e" xlink:href="eqx-20251231.xsd#eqx_InvestmentsInAssociatesReportedInSeparateFinancialStatementsNonCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435b-701a-917e-6786261c8b8b" xlink:to="loc_eqx_InvestmentsInAssociatesReportedInSeparateFinancialStatementsNonCurrent_019beedc-8ac9-7a3d-aa1d-00e41c99657e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SaleOfEquityInterestsUnits_019b9b5d-bcfe-7868-b3fe-0158145f86fa" xlink:href="eqx-20251231.xsd#eqx_SaleOfEquityInterestsUnits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435b-701a-917e-6786261c8b8b" xlink:to="loc_eqx_SaleOfEquityInterestsUnits_019b9b5d-bcfe-7868-b3fe-0158145f86fa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromExerciseOfWarrants_019b9b5d-bcfe-76b9-b4e9-109efc420c71" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromExerciseOfWarrants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435b-701a-917e-6786261c8b8b" xlink:to="loc_ifrs-full_ProceedsFromExerciseOfWarrants_019b9b5d-bcfe-76b9-b4e9-109efc420c71" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MarketableSecuritiesCarryingAmount_019b9b5d-bcfe-7cc3-b62c-01425f67264c" xlink:href="eqx-20251231.xsd#eqx_MarketableSecuritiesCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435b-701a-917e-6786261c8b8b" xlink:to="loc_eqx_MarketableSecuritiesCarryingAmount_019b9b5d-bcfe-7cc3-b62c-01425f67264c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CumulativeLossOnDispositionOfMarketableSecurities_019b9b5d-bcfe-75ea-8c21-fee5a5096f3d" xlink:href="eqx-20251231.xsd#eqx_CumulativeLossOnDispositionOfMarketableSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435b-701a-917e-6786261c8b8b" xlink:to="loc_eqx_CumulativeLossOnDispositionOfMarketableSecurities_019b9b5d-bcfe-75ea-8c21-fee5a5096f3d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CumulativeLossOnDispositionOfMarketableSecuritiesTax_019b9b5d-bcfe-7f50-ab08-41e59650f1d8" xlink:href="eqx-20251231.xsd#eqx_CumulativeLossOnDispositionOfMarketableSecuritiesTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435b-701a-917e-6786261c8b8b" xlink:to="loc_eqx_CumulativeLossOnDispositionOfMarketableSecuritiesTax_019b9b5d-bcfe-7f50-ab08-41e59650f1d8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss_019b9b5d-bcfe-7e6e-8d67-a52d044f90c1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435b-701a-917e-6786261c8b8b" xlink:to="loc_ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss_019b9b5d-bcfe-7e6e-8d67-a52d044f90c1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnHedgingInstrumentsThatHedgeInvestmentsInEquityInstruments_019b9b5d-bcfe-72eb-ba58-b9730941deda" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnHedgingInstrumentsThatHedgeInvestmentsInEquityInstruments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435b-701a-917e-6786261c8b8b" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeBeforeTaxGainsLossesOnHedgingInstrumentsThatHedgeInvestmentsInEquityInstruments_019b9b5d-bcfe-72eb-ba58-b9730941deda" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_OtherComprehensiveLossesOnHedgingInstrumentsInMarketableSecurities_019b9b5d-bcfe-7c0e-8908-3550d9473622" xlink:href="eqx-20251231.xsd#eqx_OtherComprehensiveLossesOnHedgingInstrumentsInMarketableSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435b-701a-917e-6786261c8b8b" xlink:to="loc_eqx_OtherComprehensiveLossesOnHedgingInstrumentsInMarketableSecurities_019b9b5d-bcfe-7c0e-8908-3550d9473622" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfGainsAndLossesFromInvestmentsInEquityInstruments_019b9b5d-bcfe-7601-8725-22a22a033a7f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReserveOfGainsAndLossesFromInvestmentsInEquityInstruments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435b-701a-917e-6786261c8b8b" xlink:to="loc_ifrs-full_ReserveOfGainsAndLossesFromInvestmentsInEquityInstruments_019b9b5d-bcfe-7601-8725-22a22a033a7f" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/TRADEANDOTHERRECEIVABLESScheduleofTradeandOtherReceivablesDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#TRADEANDOTHERRECEIVABLESScheduleofTradeandOtherReceivablesDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/TRADEANDOTHERRECEIVABLESScheduleofTradeandOtherReceivablesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfTradeAndOtherReceivablesLineItems_019b47d6-435b-767e-8a4a-8d582d742610" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfTradeAndOtherReceivablesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfTradeAndOtherReceivablesTable_019b47d6-435b-7bd4-9670-9a259e679ba0" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfTradeAndOtherReceivablesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DisclosureOfTradeAndOtherReceivablesLineItems_019b47d6-435b-767e-8a4a-8d582d742610" xlink:to="loc_eqx_DisclosureOfTradeAndOtherReceivablesTable_019b47d6-435b-7bd4-9670-9a259e679ba0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ValueAddedTaxAuthorityAxis_019b47d6-435b-732d-b37a-a42e8706733a" xlink:href="eqx-20251231.xsd#eqx_ValueAddedTaxAuthorityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfTradeAndOtherReceivablesTable_019b47d6-435b-7bd4-9670-9a259e679ba0" xlink:to="loc_eqx_ValueAddedTaxAuthorityAxis_019b47d6-435b-732d-b37a-a42e8706733a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ValueAddedTaxAuthorityDomain_019b47d6-435b-732d-b37a-a42e8706733a_default" xlink:href="eqx-20251231.xsd#eqx_ValueAddedTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_eqx_ValueAddedTaxAuthorityAxis_019b47d6-435b-732d-b37a-a42e8706733a" xlink:to="loc_eqx_ValueAddedTaxAuthorityDomain_019b47d6-435b-732d-b37a-a42e8706733a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ValueAddedTaxAuthorityDomain_019b47d6-435b-78ae-8a71-e14ff954b2d1" xlink:href="eqx-20251231.xsd#eqx_ValueAddedTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_eqx_ValueAddedTaxAuthorityAxis_019b47d6-435b-732d-b37a-a42e8706733a" xlink:to="loc_eqx_ValueAddedTaxAuthorityDomain_019b47d6-435b-78ae-8a71-e14ff954b2d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CanadaianFederalGovernmentMember_019bfb44-ad1d-7ec2-bcc8-04002ae0345b" xlink:href="eqx-20251231.xsd#eqx_CanadaianFederalGovernmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ValueAddedTaxAuthorityDomain_019b47d6-435b-78ae-8a71-e14ff954b2d1" xlink:to="loc_eqx_CanadaianFederalGovernmentMember_019bfb44-ad1d-7ec2-bcc8-04002ae0345b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NicaraguaFederalGovernmentMember_019bfff2-7ca5-7250-a279-7a891a7af9a1" xlink:href="eqx-20251231.xsd#eqx_NicaraguaFederalGovernmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ValueAddedTaxAuthorityDomain_019b47d6-435b-78ae-8a71-e14ff954b2d1" xlink:to="loc_eqx_NicaraguaFederalGovernmentMember_019bfff2-7ca5-7250-a279-7a891a7af9a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MexiconFederalGovernmentMember_019b47d6-435b-7c9e-b9f3-7cb34995e4ae" xlink:href="eqx-20251231.xsd#eqx_MexiconFederalGovernmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ValueAddedTaxAuthorityDomain_019b47d6-435b-78ae-8a71-e14ff954b2d1" xlink:to="loc_eqx_MexiconFederalGovernmentMember_019b47d6-435b-7c9e-b9f3-7cb34995e4ae" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BrazilianFederalGovernmentMember_019c2297-39ef-7512-875b-0a4bb2d16148" xlink:href="eqx-20251231.xsd#eqx_BrazilianFederalGovernmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ValueAddedTaxAuthorityDomain_019b47d6-435b-78ae-8a71-e14ff954b2d1" xlink:to="loc_eqx_BrazilianFederalGovernmentMember_019c2297-39ef-7512-875b-0a4bb2d16148" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeReceivables_019b47d6-435b-7fab-8c90-b62dd43596eb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfTradeAndOtherReceivablesLineItems_019b47d6-435b-767e-8a4a-8d582d742610" xlink:to="loc_ifrs-full_TradeReceivables_019b47d6-435b-7fab-8c90-b62dd43596eb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ValueAddedTaxReceivables_019b47d6-435b-7060-bfa7-952a5f6e95a7" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ValueAddedTaxReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfTradeAndOtherReceivablesLineItems_019b47d6-435b-767e-8a4a-8d582d742610" xlink:to="loc_ifrs-full_ValueAddedTaxReceivables_019b47d6-435b-7060-bfa7-952a5f6e95a7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_IncomeTaxReceivables_019b47d6-435b-775d-9d61-6b8c2e3550c5" xlink:href="eqx-20251231.xsd#eqx_IncomeTaxReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfTradeAndOtherReceivablesLineItems_019b47d6-435b-767e-8a4a-8d582d742610" xlink:to="loc_eqx_IncomeTaxReceivables_019b47d6-435b-775d-9d61-6b8c2e3550c5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherReceivables_019b47d6-435b-797f-8385-cbba2080bcad" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfTradeAndOtherReceivablesLineItems_019b47d6-435b-767e-8a4a-8d582d742610" xlink:to="loc_ifrs-full_OtherReceivables_019b47d6-435b-797f-8385-cbba2080bcad" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherReceivables_019b47d6-435b-7927-ad52-ce8112ff1b2a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfTradeAndOtherReceivablesLineItems_019b47d6-435b-767e-8a4a-8d582d742610" xlink:to="loc_ifrs-full_TradeAndOtherReceivables_019b47d6-435b-7927-ad52-ce8112ff1b2a" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/INVENTORIESAdditionalInformationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#INVENTORIESAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/INVENTORIESAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019beeee-2978-7b38-afdf-1c2aaf28f77d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_019beeee-2978-7323-afad-373d5b71a8bc" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019beeee-2978-7b38-afdf-1c2aaf28f77d" xlink:to="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_019beeee-2978-7323-afad-373d5b71a8bc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_019beeee-2978-75ba-ac62-093ec2165fb5" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_019beeee-2978-7323-afad-373d5b71a8bc" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_019beeee-2978-75ba-ac62-093ec2165fb5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_019beeee-2978-75ba-ac62-093ec2165fb5_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_019beeee-2978-75ba-ac62-093ec2165fb5" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_019beeee-2978-75ba-ac62-093ec2165fb5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_019beeee-2978-7717-b848-8ba3d3ab7c71" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_019beeee-2978-75ba-ac62-093ec2165fb5" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_019beeee-2978-7717-b848-8ba3d3ab7c71" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_LosFilosMember_019beeef-0b8e-7205-bda5-85b7848c165c" xlink:href="eqx-20251231.xsd#eqx_LosFilosMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_019beeee-2978-7717-b848-8ba3d3ab7c71" xlink:to="loc_eqx_LosFilosMember_019beeef-0b8e-7205-bda5-85b7848c165c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CastleMountainMember_019beeee-92f5-7db3-81fc-cc1b4c3af206" xlink:href="eqx-20251231.xsd#eqx_CastleMountainMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_019beeee-2978-7717-b848-8ba3d3ab7c71" xlink:to="loc_eqx_CastleMountainMember_019beeee-92f5-7db3-81fc-cc1b4c3af206" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InventoryWritedown2011_019b47d6-435c-7a28-bb7e-8c357699fdf4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InventoryWritedown2011"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019beeee-2978-7b38-afdf-1c2aaf28f77d" xlink:to="loc_ifrs-full_InventoryWritedown2011_019b47d6-435c-7a28-bb7e-8c357699fdf4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_InventoryWriteDownHeapLeachOre_019b9bb2-e297-7392-8c5d-aa7207ccab9a" xlink:href="eqx-20251231.xsd#eqx_InventoryWriteDownHeapLeachOre"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019beeee-2978-7b38-afdf-1c2aaf28f77d" xlink:to="loc_eqx_InventoryWriteDownHeapLeachOre_019b9bb2-e297-7392-8c5d-aa7207ccab9a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_WritedownsReversalsOfInventories_019b9bb2-e297-7c41-a18f-3c207b9c3df6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WritedownsReversalsOfInventories"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019beeee-2978-7b38-afdf-1c2aaf28f77d" xlink:to="loc_ifrs-full_WritedownsReversalsOfInventories_019b9bb2-e297-7c41-a18f-3c207b9c3df6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_InventoriesHeapLeachOreReclassifiedToNonCurrent_019beeee-2978-7431-8ff4-c8c21c2d82f7" xlink:href="eqx-20251231.xsd#eqx_InventoriesHeapLeachOreReclassifiedToNonCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019beeee-2978-7b38-afdf-1c2aaf28f77d" xlink:to="loc_eqx_InventoriesHeapLeachOreReclassifiedToNonCurrent_019beeee-2978-7431-8ff4-c8c21c2d82f7" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/ASSETSHELDFORSALEANDDISCONTINUEDOPERATIONAdditionalInformationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#ASSETSHELDFORSALEANDDISCONTINUEDOPERATIONAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/ASSETSHELDFORSALEANDDISCONTINUEDOPERATIONAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019c25e1-b2c2-70bd-8e7c-1d9662cee204" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable_019c25e1-b2c2-7afc-bd2e-f1658f52047f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019c25e1-b2c2-70bd-8e7c-1d9662cee204" xlink:to="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable_019c25e1-b2c2-7afc-bd2e-f1658f52047f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019c25e1-b2c2-76cb-a516-876e416cfee2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingAndDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable_019c25e1-b2c2-7afc-bd2e-f1658f52047f" xlink:to="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019c25e1-b2c2-76cb-a516-876e416cfee2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingOperationsMember_019c25e1-b2c2-76cb-a516-876e416cfee2_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019c25e1-b2c2-76cb-a516-876e416cfee2" xlink:to="loc_ifrs-full_ContinuingOperationsMember_019c25e1-b2c2-76cb-a516-876e416cfee2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingOperationsMember_019c25e1-b2c2-74b4-8a5e-2ac0fe9dc389" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019c25e1-b2c2-76cb-a516-876e416cfee2" xlink:to="loc_ifrs-full_ContinuingOperationsMember_019c25e1-b2c2-74b4-8a5e-2ac0fe9dc389" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DiscontinuedOperationsMember_019c25e1-b2c2-7145-ad5d-bbb9f570570e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ContinuingOperationsMember_019c25e1-b2c2-74b4-8a5e-2ac0fe9dc389" xlink:to="loc_ifrs-full_DiscontinuedOperationsMember_019c25e1-b2c2-7145-ad5d-bbb9f570570e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis_019c3702-e3c0-7220-a066-2b604a3449e2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable_019c25e1-b2c2-7afc-bd2e-f1658f52047f" xlink:to="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis_019c3702-e3c0-7220-a066-2b604a3449e2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019c3702-e3c0-7220-a066-2b604a3449e2_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis_019c3702-e3c0-7220-a066-2b604a3449e2" xlink:to="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019c3702-e3c0-7220-a066-2b604a3449e2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019c3702-e3c0-7a71-bdf6-f9cafe07e18b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis_019c3702-e3c0-7220-a066-2b604a3449e2" xlink:to="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019c3702-e3c0-7a71-bdf6-f9cafe07e18b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleMember_019c3702-e3c0-739d-be7f-92223405576a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019c3702-e3c0-7a71-bdf6-f9cafe07e18b" xlink:to="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleMember_019c3702-e3c0-739d-be7f-92223405576a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_019ba171-6091-72ac-8f7c-e388fca9530d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfOwnershipInterestInSubsidiary"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019c25e1-b2c2-70bd-8e7c-1d9662cee204" xlink:to="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_019ba171-6091-72ac-8f7c-e388fca9530d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationConsideration_019c25e0-904a-7f0b-bf4c-4e4779847773" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationConsideration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019c25e1-b2c2-70bd-8e7c-1d9662cee204" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationConsideration_019c25e0-904a-7f0b-bf4c-4e4779847773" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationContingentConsiderationMaximum_019c25e4-be90-790f-b451-2daf201984fd" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationContingentConsiderationMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019c25e1-b2c2-70bd-8e7c-1d9662cee204" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationContingentConsiderationMaximum_019c25e4-be90-790f-b451-2daf201984fd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationContingentConsiderationIncrementalGoldSalesAboveBaseline_019bfb77-5736-7461-a0d8-2d62ef1a9b03" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationContingentConsiderationIncrementalGoldSalesAboveBaseline"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019c25e1-b2c2-70bd-8e7c-1d9662cee204" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationContingentConsiderationIncrementalGoldSalesAboveBaseline_019bfb77-5736-7461-a0d8-2d62ef1a9b03" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationContingentConsiderationIncrementalGoldSalesRevenueMultiple_019bfb72-9187-7939-a5a1-eadde2a935e8" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationContingentConsiderationIncrementalGoldSalesRevenueMultiple"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019c25e1-b2c2-70bd-8e7c-1d9662cee204" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationContingentConsiderationIncrementalGoldSalesRevenueMultiple_019bfb72-9187-7939-a5a1-eadde2a935e8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisposalGroupIncludingDiscontinuedOperationContingentConsiderationMaximumIncrementalGoldSalesAboveBaseline_019bfb72-9187-753c-a324-879f1b4b1679" xlink:href="eqx-20251231.xsd#eqx_DisposalGroupIncludingDiscontinuedOperationContingentConsiderationMaximumIncrementalGoldSalesAboveBaseline"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019c25e1-b2c2-70bd-8e7c-1d9662cee204" xlink:to="loc_eqx_DisposalGroupIncludingDiscontinuedOperationContingentConsiderationMaximumIncrementalGoldSalesAboveBaseline_019bfb72-9187-753c-a324-879f1b4b1679" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/ASSETSHELDFORSALEANDDISCONTINUEDOPERATIONScheduleofAssetsandLiabilitiesHeldforSaleDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#ASSETSHELDFORSALEANDDISCONTINUEDOPERATIONScheduleofAssetsandLiabilitiesHeldforSaleDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/ASSETSHELDFORSALEANDDISCONTINUEDOPERATIONScheduleofAssetsandLiabilitiesHeldforSaleDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019b47d6-45f7-76ad-b3d2-c1e69d486863" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable_019b47d6-45f7-780b-9bd8-171559dbf334" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019b47d6-45f7-76ad-b3d2-c1e69d486863" xlink:to="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable_019b47d6-45f7-780b-9bd8-171559dbf334" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019c25f3-cf37-734d-b7c4-fd45ca643fca" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingAndDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable_019b47d6-45f7-780b-9bd8-171559dbf334" xlink:to="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019c25f3-cf37-734d-b7c4-fd45ca643fca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingOperationsMember_019c25f3-cf37-734d-b7c4-fd45ca643fca_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019c25f3-cf37-734d-b7c4-fd45ca643fca" xlink:to="loc_ifrs-full_ContinuingOperationsMember_019c25f3-cf37-734d-b7c4-fd45ca643fca_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingOperationsMember_019c25f3-cf37-7dcf-9adb-fbb43a074846" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019c25f3-cf37-734d-b7c4-fd45ca643fca" xlink:to="loc_ifrs-full_ContinuingOperationsMember_019c25f3-cf37-7dcf-9adb-fbb43a074846" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DiscontinuedOperationsMember_019c25f3-cf37-7382-81da-d1dd3bc388a9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ContinuingOperationsMember_019c25f3-cf37-7dcf-9adb-fbb43a074846" xlink:to="loc_ifrs-full_DiscontinuedOperationsMember_019c25f3-cf37-7382-81da-d1dd3bc388a9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis_019b47d6-45f7-7c76-b0b5-8ad02df958d4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable_019b47d6-45f7-780b-9bd8-171559dbf334" xlink:to="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis_019b47d6-45f7-7c76-b0b5-8ad02df958d4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019b47d6-45f7-7c76-b0b5-8ad02df958d4_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis_019b47d6-45f7-7c76-b0b5-8ad02df958d4" xlink:to="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019b47d6-45f7-7c76-b0b5-8ad02df958d4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019c0066-2516-77b9-9682-678cb95df081" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis_019b47d6-45f7-7c76-b0b5-8ad02df958d4" xlink:to="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019c0066-2516-77b9-9682-678cb95df081" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleMember_019b47d6-45f7-7994-891d-f875cc512b90" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember_019c0066-2516-77b9-9682-678cb95df081" xlink:to="loc_ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleMember_019b47d6-45f7-7994-891d-f875cc512b90" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashAndCashEquivalents_019b47d6-45f7-7946-9d18-6d815f78f557" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashAndCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019b47d6-45f7-76ad-b3d2-c1e69d486863" xlink:to="loc_ifrs-full_CashAndCashEquivalents_019b47d6-45f7-7946-9d18-6d815f78f557" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherCurrentReceivables_019b47d6-45f7-73b5-b4fe-2d6ccaf2cc8c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019b47d6-45f7-76ad-b3d2-c1e69d486863" xlink:to="loc_ifrs-full_TradeAndOtherCurrentReceivables_019b47d6-45f7-73b5-b4fe-2d6ccaf2cc8c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Inventories_019b47d6-45f7-7610-8088-0f79e30abaf5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Inventories"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019b47d6-45f7-76ad-b3d2-c1e69d486863" xlink:to="loc_ifrs-full_Inventories_019b47d6-45f7-7610-8088-0f79e30abaf5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipment_019b47d6-45f7-771d-84bd-d521e28b522d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019b47d6-45f7-76ad-b3d2-c1e69d486863" xlink:to="loc_ifrs-full_PropertyPlantAndEquipment_019b47d6-45f7-771d-84bd-d521e28b522d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DeferredTaxAssets_019b47d6-45f7-7bb4-932f-18e0e674b326" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DeferredTaxAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019b47d6-45f7-76ad-b3d2-c1e69d486863" xlink:to="loc_ifrs-full_DeferredTaxAssets_019b47d6-45f7-7bb4-932f-18e0e674b326" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherNoncurrentNonfinancialAssets_019b47d6-45f7-76da-aeab-c8a6d93b54cb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherNoncurrentNonfinancialAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019b47d6-45f7-76ad-b3d2-c1e69d486863" xlink:to="loc_ifrs-full_OtherNoncurrentNonfinancialAssets_019b47d6-45f7-76da-aeab-c8a6d93b54cb" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Assets_019b47d6-45f7-7f34-84b0-c88869d9f410" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019b47d6-45f7-76ad-b3d2-c1e69d486863" xlink:to="loc_ifrs-full_Assets_019b47d6-45f7-7f34-84b0-c88869d9f410" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherCurrentPayables_019ba161-e8bc-7b20-830f-e92cdebb4ad5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentPayables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019b47d6-45f7-76ad-b3d2-c1e69d486863" xlink:to="loc_ifrs-full_TradeAndOtherCurrentPayables_019ba161-e8bc-7b20-830f-e92cdebb4ad5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ReclamationObligationsNoncurrent_019b47d6-45f7-7ca6-8ccf-f1c7dd27495c" xlink:href="eqx-20251231.xsd#eqx_ReclamationObligationsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019b47d6-45f7-76ad-b3d2-c1e69d486863" xlink:to="loc_eqx_ReclamationObligationsNoncurrent_019b47d6-45f7-7ca6-8ccf-f1c7dd27495c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DeferredTaxLiabilities_019ba161-05f1-7083-9b2b-b9381e42dfc6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DeferredTaxLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019b47d6-45f7-76ad-b3d2-c1e69d486863" xlink:to="loc_ifrs-full_DeferredTaxLiabilities_019ba161-05f1-7083-9b2b-b9381e42dfc6" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherNoncurrentNonfinancialLiabilities_019b47d6-45f7-7b2c-9bf7-0ea0a4a4da1a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherNoncurrentNonfinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019b47d6-45f7-76ad-b3d2-c1e69d486863" xlink:to="loc_ifrs-full_OtherNoncurrentNonfinancialLiabilities_019b47d6-45f7-7b2c-9bf7-0ea0a4a4da1a" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Liabilities_019b47d6-45f7-7ad3-9c79-ab17b3ec6e9d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019b47d6-45f7-76ad-b3d2-c1e69d486863" xlink:to="loc_ifrs-full_Liabilities_019b47d6-45f7-7ad3-9c79-ab17b3ec6e9d" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale_019b47d6-45f7-76b3-97e2-bbde82882f41" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019b47d6-45f7-76ad-b3d2-c1e69d486863" xlink:to="loc_ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale_019b47d6-45f7-76b3-97e2-bbde82882f41" xlink:type="arc" order="12"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/ASSETSHELDFORSALEANDDISCONTINUEDOPERATIONScheduleOfCashFlowsOfTheDiscontinuedOperationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#ASSETSHELDFORSALEANDDISCONTINUEDOPERATIONScheduleOfCashFlowsOfTheDiscontinuedOperationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/ASSETSHELDFORSALEANDDISCONTINUEDOPERATIONScheduleOfCashFlowsOfTheDiscontinuedOperationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019bfb64-46e0-7a0c-b8e4-9a1ec72966f1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable_019bfb64-46e0-73e6-b477-7882576f7181" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019bfb64-46e0-7a0c-b8e4-9a1ec72966f1" xlink:to="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable_019bfb64-46e0-73e6-b477-7882576f7181" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019c2691-1013-7378-aaf3-4a56bb3f92ca" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingAndDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable_019bfb64-46e0-73e6-b477-7882576f7181" xlink:to="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019c2691-1013-7378-aaf3-4a56bb3f92ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingOperationsMember_019c2691-1013-7378-aaf3-4a56bb3f92ca_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019c2691-1013-7378-aaf3-4a56bb3f92ca" xlink:to="loc_ifrs-full_ContinuingOperationsMember_019c2691-1013-7378-aaf3-4a56bb3f92ca_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingOperationsMember_019c2691-1013-7a0c-968a-16917c88e042" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019c2691-1013-7378-aaf3-4a56bb3f92ca" xlink:to="loc_ifrs-full_ContinuingOperationsMember_019c2691-1013-7a0c-968a-16917c88e042" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DiscontinuedOperationsMember_019c2691-3dcc-78ed-80d2-da8f55c77c97" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ContinuingOperationsMember_019c2691-1013-7a0c-968a-16917c88e042" xlink:to="loc_ifrs-full_DiscontinuedOperationsMember_019c2691-3dcc-78ed-80d2-da8f55c77c97" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Revenue_019bfb64-46e0-7d36-814a-70604824d6b4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Revenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019bfb64-46e0-7a0c-b8e4-9a1ec72966f1" xlink:to="loc_ifrs-full_Revenue_019bfb64-46e0-7d36-814a-70604824d6b4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OperatingExpenseExcludingCostOfSales_019c36ff-442d-7635-8af6-3c824f58e431" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OperatingExpenseExcludingCostOfSales"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019bfb64-46e0-7a0c-b8e4-9a1ec72966f1" xlink:to="loc_ifrs-full_OperatingExpenseExcludingCostOfSales_019c36ff-442d-7635-8af6-3c824f58e431" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DepreciationAndAmortisationExpense_019c25f7-d0ba-78f2-aa75-2d716f9417e1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DepreciationAndAmortisationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019bfb64-46e0-7a0c-b8e4-9a1ec72966f1" xlink:to="loc_ifrs-full_DepreciationAndAmortisationExpense_019c25f7-d0ba-78f2-aa75-2d716f9417e1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OperatingExpense_019c36ff-b465-7f53-9b4d-02e691db9bb0" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OperatingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019bfb64-46e0-7a0c-b8e4-9a1ec72966f1" xlink:to="loc_ifrs-full_OperatingExpense_019c36ff-b465-7f53-9b4d-02e691db9bb0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossFromOperatingActivities_019bfb64-46e0-7772-8711-5dcab2808b6a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossFromOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019bfb64-46e0-7a0c-b8e4-9a1ec72966f1" xlink:to="loc_ifrs-full_ProfitLossFromOperatingActivities_019bfb64-46e0-7772-8711-5dcab2808b6a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinanceCosts_019bfb64-46e0-758c-a53d-969bd3b393a7" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinanceCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019bfb64-46e0-7a0c-b8e4-9a1ec72966f1" xlink:to="loc_ifrs-full_FinanceCosts_019bfb64-46e0-758c-a53d-969bd3b393a7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinanceIncome_019bfb64-46e0-7b59-a6c2-14cef898cb08" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinanceIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019bfb64-46e0-7a0c-b8e4-9a1ec72966f1" xlink:to="loc_ifrs-full_FinanceIncome_019bfb64-46e0-7b59-a6c2-14cef898cb08" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_OtherIncomeExpenseNonOperating_019bfb64-46e0-703a-9b3e-d0db6c51fa8c" xlink:href="eqx-20251231.xsd#eqx_OtherIncomeExpenseNonOperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019bfb64-46e0-7a0c-b8e4-9a1ec72966f1" xlink:to="loc_eqx_OtherIncomeExpenseNonOperating_019bfb64-46e0-703a-9b3e-d0db6c51fa8c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossBeforeTax_019bfb64-46e0-7366-84d1-d4b88752d4fc" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019bfb64-46e0-7a0c-b8e4-9a1ec72966f1" xlink:to="loc_ifrs-full_ProfitLossBeforeTax_019bfb64-46e0-7366-84d1-d4b88752d4fc" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxExpenseContinuingOperations_019bfb64-46e0-70f6-872d-f508d1341e49" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019bfb64-46e0-7a0c-b8e4-9a1ec72966f1" xlink:to="loc_ifrs-full_IncomeTaxExpenseContinuingOperations_019bfb64-46e0-70f6-872d-f508d1341e49" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossFromDiscontinuedOperations_019bfb64-46e0-77e4-95ed-bbd918179a4d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossFromDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019bfb64-46e0-7a0c-b8e4-9a1ec72966f1" xlink:to="loc_ifrs-full_ProfitLossFromDiscontinuedOperations_019bfb64-46e0-77e4-95ed-bbd918179a4d" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BasicEarningsLossPerShareFromDiscontinuedOperations_019bfb64-46e0-78bd-b322-f544308d9318" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BasicEarningsLossPerShareFromDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019bfb64-46e0-7a0c-b8e4-9a1ec72966f1" xlink:to="loc_ifrs-full_BasicEarningsLossPerShareFromDiscontinuedOperations_019bfb64-46e0-78bd-b322-f544308d9318" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DilutedEarningsLossPerShareFromDiscontinuedOperations_019bfb64-46e0-7713-a3e4-cfe4d0e4e3c7" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DilutedEarningsLossPerShareFromDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019bfb64-46e0-7a0c-b8e4-9a1ec72966f1" xlink:to="loc_ifrs-full_DilutedEarningsLossPerShareFromDiscontinuedOperations_019bfb64-46e0-7713-a3e4-cfe4d0e4e3c7" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromContinuingAndDiscontinuedOperationsAbstract_019c48ca-97de-7179-a281-277381811f87" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromContinuingAndDiscontinuedOperationsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems_019bfb64-46e0-7a0c-b8e4-9a1ec72966f1" xlink:to="loc_ifrs-full_CashFlowsFromContinuingAndDiscontinuedOperationsAbstract_019c48ca-97de-7179-a281-277381811f87" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations_019bfb64-9538-7293-b086-59664647a12e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CashFlowsFromContinuingAndDiscontinuedOperationsAbstract_019c48ca-97de-7179-a281-277381811f87" xlink:to="loc_ifrs-full_CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations_019bfb64-9538-7293-b086-59664647a12e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations_019bfb64-9538-76fc-ad67-93fb280a5f3a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CashFlowsFromContinuingAndDiscontinuedOperationsAbstract_019c48ca-97de-7179-a281-277381811f87" xlink:to="loc_ifrs-full_CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations_019bfb64-9538-76fc-ad67-93fb280a5f3a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations_019bfb64-9538-7ce3-af83-9458552dc6f8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CashFlowsFromContinuingAndDiscontinuedOperationsAbstract_019c48ca-97de-7179-a281-277381811f87" xlink:to="loc_ifrs-full_CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations_019bfb64-9538-7ce3-af83-9458552dc6f8" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/MINERALPROPERTIESPLANTANDEQUIPMENTScheduleofInformationAboutInPropertyPlantAndEquipmentDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#MINERALPROPERTIESPLANTANDEQUIPMENTScheduleofInformationAboutInPropertyPlantAndEquipmentDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/MINERALPROPERTIESPLANTANDEQUIPMENTScheduleofInformationAboutInPropertyPlantAndEquipmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-789f-9cb9-03745a276225" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_019b47d6-435c-79b7-a5e7-03adc5d0e797" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-789f-9cb9-03745a276225" xlink:to="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_019b47d6-435c-79b7-a5e7-03adc5d0e797" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfAssetsAxis_019b47d6-435c-7c2e-8b42-c7de27928242" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAssetsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_019b47d6-435c-79b7-a5e7-03adc5d0e797" xlink:to="loc_ifrs-full_ClassesOfAssetsAxis_019b47d6-435c-7c2e-8b42-c7de27928242" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfAssetsDomain_019b47d6-435c-7c2e-8b42-c7de27928242_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfAssetsAxis_019b47d6-435c-7c2e-8b42-c7de27928242" xlink:to="loc_ifrs-full_ClassesOfAssetsDomain_019b47d6-435c-7c2e-8b42-c7de27928242_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfAssetsDomain_019b47d6-435c-7081-b34b-dcb6462e946c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfAssetsAxis_019b47d6-435c-7c2e-8b42-c7de27928242" xlink:to="loc_ifrs-full_ClassesOfAssetsDomain_019b47d6-435c-7081-b34b-dcb6462e946c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MineralPropertiesMember_019b47d6-435c-74fe-b39a-6570f5f2814b" xlink:href="eqx-20251231.xsd#eqx_MineralPropertiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfAssetsDomain_019b47d6-435c-7081-b34b-dcb6462e946c" xlink:to="loc_eqx_MineralPropertiesMember_019b47d6-435c-74fe-b39a-6570f5f2814b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipmentMember_019b47d6-435c-7724-af12-364526c854a5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PropertyPlantAndEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfAssetsDomain_019b47d6-435c-7081-b34b-dcb6462e946c" xlink:to="loc_ifrs-full_PropertyPlantAndEquipmentMember_019b47d6-435c-7724-af12-364526c854a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ConstructionInProgressMember_019b47d6-435c-75c9-a028-df25ca46fa00" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ConstructionInProgressMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfAssetsDomain_019b47d6-435c-7081-b34b-dcb6462e946c" xlink:to="loc_ifrs-full_ConstructionInProgressMember_019b47d6-435c-75c9-a028-df25ca46fa00" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TangibleExplorationAndEvaluationAssetsMember_019b47d6-435c-7d07-90f5-c43e7884f2be" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TangibleExplorationAndEvaluationAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfAssetsDomain_019b47d6-435c-7081-b34b-dcb6462e946c" xlink:to="loc_ifrs-full_TangibleExplorationAndEvaluationAssetsMember_019b47d6-435c-7d07-90f5-c43e7884f2be" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_019b47d6-435c-7671-9ba3-3e398f966583" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_019b47d6-435c-79b7-a5e7-03adc5d0e797" xlink:to="loc_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_019b47d6-435c-7671-9ba3-3e398f966583" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CarryingAmountMember_019b47d6-435c-7671-9ba3-3e398f966583_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_019b47d6-435c-7671-9ba3-3e398f966583" xlink:to="loc_ifrs-full_CarryingAmountMember_019b47d6-435c-7671-9ba3-3e398f966583_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CarryingAmountMember_019b47d6-435c-77aa-bf41-350f21da382b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_019b47d6-435c-7671-9ba3-3e398f966583" xlink:to="loc_ifrs-full_CarryingAmountMember_019b47d6-435c-77aa-bf41-350f21da382b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GrossCarryingAmountMember_019b47d6-435c-7fd6-9f69-89cb5d4eb32e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GrossCarryingAmountMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CarryingAmountMember_019b47d6-435c-77aa-bf41-350f21da382b" xlink:to="loc_ifrs-full_GrossCarryingAmountMember_019b47d6-435c-7fd6-9f69-89cb5d4eb32e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AccumulatedDepreciationAndAmortisationMember_019b47d6-435c-7d9f-9f12-fc1fcc5a948a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AccumulatedDepreciationAndAmortisationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CarryingAmountMember_019b47d6-435c-77aa-bf41-350f21da382b" xlink:to="loc_ifrs-full_AccumulatedDepreciationAndAmortisationMember_019b47d6-435c-7d9f-9f12-fc1fcc5a948a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsAxis_019b47d6-435c-7bf4-adae-57fb4ec85194" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_019b47d6-435c-79b7-a5e7-03adc5d0e797" xlink:to="loc_ifrs-full_JointOperationsAxis_019b47d6-435c-7bf4-adae-57fb4ec85194" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsDomain_019b47d6-435c-7bf4-adae-57fb4ec85194_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_JointOperationsAxis_019b47d6-435c-7bf4-adae-57fb4ec85194" xlink:to="loc_ifrs-full_JointOperationsDomain_019b47d6-435c-7bf4-adae-57fb4ec85194_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_JointOperationsDomain_019b47d6-435c-7610-aacb-e8a7e7f9be92" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_JointOperationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_JointOperationsAxis_019b47d6-435c-7bf4-adae-57fb4ec85194" xlink:to="loc_ifrs-full_JointOperationsDomain_019b47d6-435c-7610-aacb-e8a7e7f9be92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-435c-7a24-9474-681939a20619" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_JointOperationsDomain_019b47d6-435c-7610-aacb-e8a7e7f9be92" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-435c-7a24-9474-681939a20619" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets_019b47d6-435c-7e0b-a4fe-153a94ead13b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-789f-9cb9-03745a276225" xlink:to="loc_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets_019b47d6-435c-7e0b-a4fe-153a94ead13b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_RemeasurementToFairValueOnGreenstoneAcquisition_019b47d6-435c-70ff-a4f8-ec8a67b9b4af" xlink:href="eqx-20251231.xsd#eqx_RemeasurementToFairValueOnGreenstoneAcquisition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-789f-9cb9-03745a276225" xlink:to="loc_eqx_RemeasurementToFairValueOnGreenstoneAcquisition_019b47d6-435c-70ff-a4f8-ec8a67b9b4af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment_019b47d6-435c-7280-a493-b92926387b2d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-789f-9cb9-03745a276225" xlink:to="loc_ifrs-full_AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment_019b47d6-435c-7280-a493-b92926387b2d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment_019b47d6-435c-7b7a-981f-c481791125f3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-789f-9cb9-03745a276225" xlink:to="loc_ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment_019b47d6-435c-7b7a-981f-c481791125f3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughTransfersPropertyPlantAndEquipment_019b47d6-435c-7db3-85f2-3a58b185cf70" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughTransfersPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-789f-9cb9-03745a276225" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughTransfersPropertyPlantAndEquipment_019b47d6-435c-7db3-85f2-3a58b185cf70" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisposalsPropertyPlantAndEquipment_019b47d6-435c-7834-b2e7-1797686a19a0" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisposalsPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-789f-9cb9-03745a276225" xlink:to="loc_ifrs-full_DisposalsPropertyPlantAndEquipment_019b47d6-435c-7834-b2e7-1797686a19a0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughOtherChangesPropertyPlantAndEquipment_019b47d6-435c-7e2d-b887-4bf3f4a9ad33" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughOtherChangesPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-789f-9cb9-03745a276225" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughOtherChangesPropertyPlantAndEquipment_019b47d6-435c-7e2d-b887-4bf3f4a9ad33" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment_019b47d6-435c-7dd0-ba32-dfe5e2f4c710" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-789f-9cb9-03745a276225" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment_019b47d6-435c-7dd0-ba32-dfe5e2f4c710" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ReclassifiedRelatingToAssetsHeldForSale_019ba13e-fd6d-792f-b13c-06c275e5a509" xlink:href="eqx-20251231.xsd#eqx_ReclassifiedRelatingToAssetsHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-789f-9cb9-03745a276225" xlink:to="loc_eqx_ReclassifiedRelatingToAssetsHeldForSale_019ba13e-fd6d-792f-b13c-06c275e5a509" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets_019b47d6-435c-7a04-ad34-065dd349eb0a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ProportionOfOwnershipInterestInJointOperationByUnconsolidatedEntity_019b47d6-435c-7667-bce8-c2b2a24289b5" xlink:href="eqx-20251231.xsd#eqx_ProportionOfOwnershipInterestInJointOperationByUnconsolidatedEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-789f-9cb9-03745a276225" xlink:to="loc_eqx_ProportionOfOwnershipInterestInJointOperationByUnconsolidatedEntity_019b47d6-435c-7667-bce8-c2b2a24289b5" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NonCashRightOfUseAssetAdditionsOtherThanThroughBusinessCombinations_019b47d6-435c-7554-a619-088c61b9cc01" xlink:href="eqx-20251231.xsd#eqx_NonCashRightOfUseAssetAdditionsOtherThanThroughBusinessCombinations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-789f-9cb9-03745a276225" xlink:to="loc_eqx_NonCashRightOfUseAssetAdditionsOtherThanThroughBusinessCombinations_019b47d6-435c-7554-a619-088c61b9cc01" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NonCashDepreciationAdditionsOtherThanThroughBusinessCombinations_019b47d6-435c-7171-a67a-ba46a4301e62" xlink:href="eqx-20251231.xsd#eqx_NonCashDepreciationAdditionsOtherThanThroughBusinessCombinations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-789f-9cb9-03745a276225" xlink:to="loc_eqx_NonCashDepreciationAdditionsOtherThanThroughBusinessCombinations_019b47d6-435c-7171-a67a-ba46a4301e62" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NonCashBorrowingCostAdditionsOtherThanThroughBusinessCombinations_019b47d6-435c-7e06-b11e-6c971a2c7a44" xlink:href="eqx-20251231.xsd#eqx_NonCashBorrowingCostAdditionsOtherThanThroughBusinessCombinations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-789f-9cb9-03745a276225" xlink:to="loc_eqx_NonCashBorrowingCostAdditionsOtherThanThroughBusinessCombinations_019b47d6-435c-7e06-b11e-6c971a2c7a44" xlink:type="arc" order="13"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/MINERALPROPERTIESPLANTANDEQUIPMENTAdditionalInformationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#MINERALPROPERTIESPLANTANDEQUIPMENTAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/MINERALPROPERTIESPLANTANDEQUIPMENTAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019ba158-ceeb-7d5b-9f67-c895c1974e17" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_019b47d6-435c-7283-92f8-2dd2353e9579" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019ba158-ceeb-7d5b-9f67-c895c1974e17" xlink:to="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_019b47d6-435c-7283-92f8-2dd2353e9579" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfAssetsAxis_019ba158-ceeb-78fa-8a0b-0fad229b6b66" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAssetsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_019b47d6-435c-7283-92f8-2dd2353e9579" xlink:to="loc_ifrs-full_ClassesOfAssetsAxis_019ba158-ceeb-78fa-8a0b-0fad229b6b66" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfAssetsDomain_019ba158-ceeb-78fa-8a0b-0fad229b6b66_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfAssetsAxis_019ba158-ceeb-78fa-8a0b-0fad229b6b66" xlink:to="loc_ifrs-full_ClassesOfAssetsDomain_019ba158-ceeb-78fa-8a0b-0fad229b6b66_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfAssetsDomain_019ba158-ceeb-7c14-9e85-881e16657e7f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfAssetsAxis_019ba158-ceeb-78fa-8a0b-0fad229b6b66" xlink:to="loc_ifrs-full_ClassesOfAssetsDomain_019ba158-ceeb-7c14-9e85-881e16657e7f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ConstructionInProgressMember_019ba158-ceeb-777b-bd5b-335f19166631" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ConstructionInProgressMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfAssetsDomain_019ba158-ceeb-7c14-9e85-881e16657e7f" xlink:to="loc_ifrs-full_ConstructionInProgressMember_019ba158-ceeb-777b-bd5b-335f19166631" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MineralPropertiesMember_019ba158-ceeb-751a-85ba-4f2e4f21b9fe" xlink:href="eqx-20251231.xsd#eqx_MineralPropertiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfAssetsDomain_019ba158-ceeb-7c14-9e85-881e16657e7f" xlink:to="loc_eqx_MineralPropertiesMember_019ba158-ceeb-751a-85ba-4f2e4f21b9fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019ba158-ceeb-708c-9c3f-900dfadd2f27" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_019b47d6-435c-7283-92f8-2dd2353e9579" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019ba158-ceeb-708c-9c3f-900dfadd2f27" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019ba158-ceeb-708c-9c3f-900dfadd2f27_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019ba158-ceeb-708c-9c3f-900dfadd2f27" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019ba158-ceeb-708c-9c3f-900dfadd2f27_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019ba158-ceeb-7d8e-a02b-1d414cc26bde" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019ba158-ceeb-708c-9c3f-900dfadd2f27" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019ba158-ceeb-7d8e-a02b-1d414cc26bde" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CastleMountainMember_019cfd21-2781-7db2-8e82-e426b2f3076f" xlink:href="eqx-20251231.xsd#eqx_CastleMountainMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019ba158-ceeb-7d8e-a02b-1d414cc26bde" xlink:to="loc_eqx_CastleMountainMember_019cfd21-2781-7db2-8e82-e426b2f3076f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DesarrollosMinerosSanLuisSADeCVMember_019bf224-46ee-784f-b60d-24a5a16d1934" xlink:href="eqx-20251231.xsd#eqx_DesarrollosMinerosSanLuisSADeCVMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019ba158-ceeb-7d8e-a02b-1d414cc26bde" xlink:to="loc_eqx_DesarrollosMinerosSanLuisSADeCVMember_019bf224-46ee-784f-b60d-24a5a16d1934" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019ba158-ceeb-7d7f-8c0d-a8efd84b74d6" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019ba158-ceeb-7d8e-a02b-1d414cc26bde" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019ba158-ceeb-7d7f-8c0d-a8efd84b74d6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ValentineMember_019ba158-ceeb-7977-b78b-e71d3a2b448c" xlink:href="eqx-20251231.xsd#eqx_ValentineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019ba158-ceeb-7d8e-a02b-1d414cc26bde" xlink:to="loc_eqx_ValentineMember_019ba158-ceeb-7977-b78b-e71d3a2b448c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipment_019ba158-ceeb-7289-bfb1-eb067b843087" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019ba158-ceeb-7d5b-9f67-c895c1974e17" xlink:to="loc_ifrs-full_PropertyPlantAndEquipment_019ba158-ceeb-7289-bfb1-eb067b843087" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CapitalizedCostsOfConstructionInProgressGross_019ba158-ceeb-733f-a679-e8f3efd9ca41" xlink:href="eqx-20251231.xsd#eqx_CapitalizedCostsOfConstructionInProgressGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019ba158-ceeb-7d5b-9f67-c895c1974e17" xlink:to="loc_eqx_CapitalizedCostsOfConstructionInProgressGross_019ba158-ceeb-733f-a679-e8f3efd9ca41" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/MINERALPROPERTIESPLANTANDEQUIPMENTScheduleofInformationAboutSignificantRoyaltyArrangementsDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#MINERALPROPERTIESPLANTANDEQUIPMENTScheduleofInformationAboutSignificantRoyaltyArrangementsDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/MINERALPROPERTIESPLANTANDEQUIPMENTScheduleofInformationAboutSignificantRoyaltyArrangementsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-75eb-8ead-05e2f240b19f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_019b47d6-435c-7b11-baf8-2c9dce0132fd" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-75eb-8ead-05e2f240b19f" xlink:to="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_019b47d6-435c-7b11-baf8-2c9dce0132fd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019b47d6-435c-7e58-81a1-691d30926b87" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_019b47d6-435c-7b11-baf8-2c9dce0132fd" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019b47d6-435c-7e58-81a1-691d30926b87" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435c-7e58-81a1-691d30926b87_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019b47d6-435c-7e58-81a1-691d30926b87" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435c-7e58-81a1-691d30926b87_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435c-7d14-9321-85fc272c6e50" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_019b47d6-435c-7e58-81a1-691d30926b87" xlink:to="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435c-7d14-9321-85fc272c6e50" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-435c-7554-a42e-78151522ac91" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435c-7d14-9321-85fc272c6e50" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-435c-7554-a42e-78151522ac91" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ValentineMember_019ba142-2567-75e6-b4a6-29dd63782968" xlink:href="eqx-20251231.xsd#eqx_ValentineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435c-7d14-9321-85fc272c6e50" xlink:to="loc_eqx_ValentineMember_019ba142-2567-75e6-b4a6-29dd63782968" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MesquiteMember_019b47d6-435c-7d7c-9740-1d2e97137c36" xlink:href="eqx-20251231.xsd#eqx_MesquiteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435c-7d14-9321-85fc272c6e50" xlink:to="loc_eqx_MesquiteMember_019b47d6-435c-7d7c-9740-1d2e97137c36" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NicaraguaS.A.Member_019bf229-4d76-7acf-ba86-6f9a851c4c8a" xlink:href="eqx-20251231.xsd#eqx_NicaraguaS.A.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435c-7d14-9321-85fc272c6e50" xlink:to="loc_eqx_NicaraguaS.A.Member_019bf229-4d76-7acf-ba86-6f9a851c4c8a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CastleMountainMember_019b47d6-435c-72bd-834b-5e50fb77ef0e" xlink:href="eqx-20251231.xsd#eqx_CastleMountainMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435c-7d14-9321-85fc272c6e50" xlink:to="loc_eqx_CastleMountainMember_019b47d6-435c-72bd-834b-5e50fb77ef0e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_LosFilosMember_019b47d6-435c-7a07-8d2b-3801f2cfb6b5" xlink:href="eqx-20251231.xsd#eqx_LosFilosMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b47d6-435c-7d14-9321-85fc272c6e50" xlink:to="loc_eqx_LosFilosMember_019b47d6-435c-7a07-8d2b-3801f2cfb6b5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NetSmelterReturnsToRoyaltyAxis_019b47d6-435c-7b46-a675-7244b6d5bdf8" xlink:href="eqx-20251231.xsd#eqx_NetSmelterReturnsToRoyaltyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_019b47d6-435c-7b11-baf8-2c9dce0132fd" xlink:to="loc_eqx_NetSmelterReturnsToRoyaltyAxis_019b47d6-435c-7b46-a675-7244b6d5bdf8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NetSmelterReturnsToRoyaltyDomain_019b47d6-435c-7b46-a675-7244b6d5bdf8_default" xlink:href="eqx-20251231.xsd#eqx_NetSmelterReturnsToRoyaltyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_eqx_NetSmelterReturnsToRoyaltyAxis_019b47d6-435c-7b46-a675-7244b6d5bdf8" xlink:to="loc_eqx_NetSmelterReturnsToRoyaltyDomain_019b47d6-435c-7b46-a675-7244b6d5bdf8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NetSmelterReturnsToRoyaltyDomain_019b47d6-435c-7653-b8b4-f0045e80fdcd" xlink:href="eqx-20251231.xsd#eqx_NetSmelterReturnsToRoyaltyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_eqx_NetSmelterReturnsToRoyaltyAxis_019b47d6-435c-7b46-a675-7244b6d5bdf8" xlink:to="loc_eqx_NetSmelterReturnsToRoyaltyDomain_019b47d6-435c-7653-b8b4-f0045e80fdcd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GrossRevenueMember_019b47d6-435c-766d-8c03-53e53e52b9be" xlink:href="eqx-20251231.xsd#eqx_GrossRevenueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_NetSmelterReturnsToRoyaltyDomain_019b47d6-435c-7653-b8b4-f0045e80fdcd" xlink:to="loc_eqx_GrossRevenueMember_019b47d6-435c-766d-8c03-53e53e52b9be" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_LaLibertadMember_019ba178-7d2f-73cb-99a0-dcbb20f4f082" xlink:href="eqx-20251231.xsd#eqx_LaLibertadMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_NetSmelterReturnsToRoyaltyDomain_019b47d6-435c-7653-b8b4-f0045e80fdcd" xlink:to="loc_eqx_LaLibertadMember_019ba178-7d2f-73cb-99a0-dcbb20f4f082" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ELLimonMember_019ba178-fe08-7b0a-9b8e-0f00f5e86528" xlink:href="eqx-20251231.xsd#eqx_ELLimonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_NetSmelterReturnsToRoyaltyDomain_019b47d6-435c-7653-b8b4-f0045e80fdcd" xlink:to="loc_eqx_ELLimonMember_019ba178-fe08-7b0a-9b8e-0f00f5e86528" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NSRMember_019ba179-5900-7758-ac8e-8825f5f4edd2" xlink:href="eqx-20251231.xsd#eqx_NSRMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_NetSmelterReturnsToRoyaltyDomain_019b47d6-435c-7653-b8b4-f0045e80fdcd" xlink:to="loc_eqx_NSRMember_019ba179-5900-7758-ac8e-8825f5f4edd2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RangeAxis_019b47d6-435c-7111-b0b7-df94829ada76" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_019b47d6-435c-7b11-baf8-2c9dce0132fd" xlink:to="loc_ifrs-full_RangeAxis_019b47d6-435c-7111-b0b7-df94829ada76" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RangeDomain_019b47d6-435c-7111-b0b7-df94829ada76_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_RangeAxis_019b47d6-435c-7111-b0b7-df94829ada76" xlink:to="loc_ifrs-full_RangeDomain_019b47d6-435c-7111-b0b7-df94829ada76_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RangeDomain_019b47d6-435c-7008-8057-e81edd8887f0" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_RangeAxis_019b47d6-435c-7111-b0b7-df94829ada76" xlink:to="loc_ifrs-full_RangeDomain_019b47d6-435c-7008-8057-e81edd8887f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BottomOfRangeMember_019b47d6-435c-7769-b30d-c5537bd75f0d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BottomOfRangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangeDomain_019b47d6-435c-7008-8057-e81edd8887f0" xlink:to="loc_ifrs-full_BottomOfRangeMember_019b47d6-435c-7769-b30d-c5537bd75f0d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TopOfRangeMember_019b47d6-435c-7b49-bfb6-064b008020e3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TopOfRangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangeDomain_019b47d6-435c-7008-8057-e81edd8887f0" xlink:to="loc_ifrs-full_TopOfRangeMember_019b47d6-435c-7b49-bfb6-064b008020e3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PercentageOfNetSmelterReturnsToRoyalty_019b47d6-435c-7225-9520-ef92d350162a" xlink:href="eqx-20251231.xsd#eqx_PercentageOfNetSmelterReturnsToRoyalty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b47d6-435c-75eb-8ead-05e2f240b19f" xlink:to="loc_eqx_PercentageOfNetSmelterReturnsToRoyalty_019b47d6-435c-7225-9520-ef92d350162a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/OTHERNONCURRENTASSETSAdditionalInformationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#OTHERNONCURRENTASSETSAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/OTHERNONCURRENTASSETSAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsLineItems_019c99e2-9365-7a28-a109-92939a36947f" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfDetailedInformationAboutOtherAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsTable_019b47d6-435c-70f8-9949-bd5a31a209ad" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfDetailedInformationAboutOtherAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsLineItems_019c99e2-9365-7a28-a109-92939a36947f" xlink:to="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsTable_019b47d6-435c-70f8-9949-bd5a31a209ad" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInAssociatesAxis_019c99e2-9365-76c0-8869-edc4da28d9f7" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInAssociatesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsTable_019b47d6-435c-70f8-9949-bd5a31a209ad" xlink:to="loc_ifrs-full_SignificantInvestmentsInAssociatesAxis_019c99e2-9365-76c0-8869-edc4da28d9f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019c99e2-9365-76c0-8869-edc4da28d9f7_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInAssociatesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInAssociatesAxis_019c99e2-9365-76c0-8869-edc4da28d9f7" xlink:to="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019c99e2-9365-76c0-8869-edc4da28d9f7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019c99e2-9365-7cc5-9b4f-735ba86b9ee6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInAssociatesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInAssociatesAxis_019c99e2-9365-76c0-8869-edc4da28d9f7" xlink:to="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019c99e2-9365-7cc5-9b4f-735ba86b9ee6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BearCreekMiningCorporationMember_019c99e2-9365-7c75-8f72-b4f1d900aa8c" xlink:href="eqx-20251231.xsd#eqx_BearCreekMiningCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019c99e2-9365-7cc5-9b4f-735ba86b9ee6" xlink:to="loc_eqx_BearCreekMiningCorporationMember_019c99e2-9365-7c75-8f72-b4f1d900aa8c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_VersametMember_019c99e2-c329-78f4-8c64-2f8e6e4e5d7b" xlink:href="eqx-20251231.xsd#eqx_VersametMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019c99e2-9365-7cc5-9b4f-735ba86b9ee6" xlink:to="loc_eqx_VersametMember_019c99e2-c329-78f4-8c64-2f8e6e4e5d7b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RangeAxis_019c99e2-c329-713b-b1a9-ff6f675e465e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsTable_019b47d6-435c-70f8-9949-bd5a31a209ad" xlink:to="loc_ifrs-full_RangeAxis_019c99e2-c329-713b-b1a9-ff6f675e465e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RangeDomain_019c99e2-c329-713b-b1a9-ff6f675e465e_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_RangeAxis_019c99e2-c329-713b-b1a9-ff6f675e465e" xlink:to="loc_ifrs-full_RangeDomain_019c99e2-c329-713b-b1a9-ff6f675e465e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RangeDomain_019c99e2-c329-731b-a2c4-d9c99b445bb4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_RangeAxis_019c99e2-c329-713b-b1a9-ff6f675e465e" xlink:to="loc_ifrs-full_RangeDomain_019c99e2-c329-731b-a2c4-d9c99b445bb4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BottomOfRangeMember_019c99e2-c329-72ea-a222-27d216d79649" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BottomOfRangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangeDomain_019c99e2-c329-731b-a2c4-d9c99b445bb4" xlink:to="loc_ifrs-full_BottomOfRangeMember_019c99e2-c329-72ea-a222-27d216d79649" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TopOfRangeMember_019c99e2-c329-765d-8dbb-e03ba4c08652" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TopOfRangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangeDomain_019c99e2-c329-731b-a2c4-d9c99b445bb4" xlink:to="loc_ifrs-full_TopOfRangeMember_019c99e2-c329-765d-8dbb-e03ba4c08652" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AnnualCompoundInterestRate_019c99e2-9365-709a-b48d-c7fcbe83229d" xlink:href="eqx-20251231.xsd#eqx_AnnualCompoundInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsLineItems_019c99e2-9365-7a28-a109-92939a36947f" xlink:to="loc_eqx_AnnualCompoundInterestRate_019c99e2-9365-709a-b48d-c7fcbe83229d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NotesReceivablePrincipalAndInterestOutstanding_019c99e2-9365-7eaf-bb4e-b5f95e894d0d" xlink:href="eqx-20251231.xsd#eqx_NotesReceivablePrincipalAndInterestOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsLineItems_019c99e2-9365-7a28-a109-92939a36947f" xlink:to="loc_eqx_NotesReceivablePrincipalAndInterestOutstanding_019c99e2-9365-7eaf-bb4e-b5f95e894d0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NotesReceivableConversionPriceRate_019c99e2-9365-7aa3-9e65-439535b18e83" xlink:href="eqx-20251231.xsd#eqx_NotesReceivableConversionPriceRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsLineItems_019c99e2-9365-7a28-a109-92939a36947f" xlink:to="loc_eqx_NotesReceivableConversionPriceRate_019c99e2-9365-7aa3-9e65-439535b18e83" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NotesReceivableSettlementSmelterReturnsRoyaltyPercentage_019c99e2-9365-7dc5-817a-7e454efe1570" xlink:href="eqx-20251231.xsd#eqx_NotesReceivableSettlementSmelterReturnsRoyaltyPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsLineItems_019c99e2-9365-7a28-a109-92939a36947f" xlink:to="loc_eqx_NotesReceivableSettlementSmelterReturnsRoyaltyPercentage_019c99e2-9365-7dc5-817a-7e454efe1570" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NotesReceivableSettlementBuybackPercentage_019c99e2-9365-7231-bc95-51711de1f685" xlink:href="eqx-20251231.xsd#eqx_NotesReceivableSettlementBuybackPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsLineItems_019c99e2-9365-7a28-a109-92939a36947f" xlink:to="loc_eqx_NotesReceivableSettlementBuybackPercentage_019c99e2-9365-7231-bc95-51711de1f685" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NotesReceivableSettlementBuybackAmount_019c99e2-9365-7e10-aa21-48431d9f7f40" xlink:href="eqx-20251231.xsd#eqx_NotesReceivableSettlementBuybackAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsLineItems_019c99e2-9365-7a28-a109-92939a36947f" xlink:to="loc_eqx_NotesReceivableSettlementBuybackAmount_019c99e2-9365-7e10-aa21-48431d9f7f40" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NoteReceivableFairValueLossGain_019c99e2-9365-76d4-83b7-f89e8608d0a5" xlink:href="eqx-20251231.xsd#eqx_NoteReceivableFairValueLossGain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsLineItems_019c99e2-9365-7a28-a109-92939a36947f" xlink:to="loc_eqx_NoteReceivableFairValueLossGain_019c99e2-9365-76d4-83b7-f89e8608d0a5" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestInAssociate_019c99e2-c329-70f7-af81-6981c35a9b1e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfOwnershipInterestInAssociate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsLineItems_019c99e2-9365-7a28-a109-92939a36947f" xlink:to="loc_ifrs-full_ProportionOfOwnershipInterestInAssociate_019c99e2-c329-70f7-af81-6981c35a9b1e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CarryingAmountOfInvestment_019c99e2-c329-768f-8adc-c5edd0c93383" xlink:href="eqx-20251231.xsd#eqx_CarryingAmountOfInvestment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsLineItems_019c99e2-9365-7a28-a109-92939a36947f" xlink:to="loc_eqx_CarryingAmountOfInvestment_019c99e2-c329-768f-8adc-c5edd0c93383" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GainOnSaleOfPartialInterestAndReclassificationOfInvestment_019c99e2-c329-7c67-8de5-92bfe33d8c80" xlink:href="eqx-20251231.xsd#eqx_GainOnSaleOfPartialInterestAndReclassificationOfInvestment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsLineItems_019c99e2-9365-7a28-a109-92939a36947f" xlink:to="loc_eqx_GainOnSaleOfPartialInterestAndReclassificationOfInvestment_019c99e2-c329-7c67-8de5-92bfe33d8c80" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred_019c99e2-c329-7a2e-bc34-90365f48aacc" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsLineItems_019c99e2-9365-7a28-a109-92939a36947f" xlink:to="loc_ifrs-full_AcquisitiondateFairValueOfTotalConsiderationTransferred_019c99e2-c329-7a2e-bc34-90365f48aacc" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NumberOfInstrumentsOrInterestsIssuedOrIssuablePricePerShare_019c99e2-c329-72a1-b72d-4a90e53d695b" xlink:href="eqx-20251231.xsd#eqx_NumberOfInstrumentsOrInterestsIssuedOrIssuablePricePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsLineItems_019c99e2-9365-7a28-a109-92939a36947f" xlink:to="loc_eqx_NumberOfInstrumentsOrInterestsIssuedOrIssuablePricePerShare_019c99e2-c329-72a1-b72d-4a90e53d695b" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PercentageOfCommonSharesSubjectToCallOptionExercisable_019c9a0c-4064-744e-868b-87f072ae29a2" xlink:href="eqx-20251231.xsd#eqx_PercentageOfCommonSharesSubjectToCallOptionExercisable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutOtherAssetsLineItems_019c99e2-9365-7a28-a109-92939a36947f" xlink:to="loc_eqx_PercentageOfCommonSharesSubjectToCallOptionExercisable_019c9a0c-4064-744e-868b-87f072ae29a2" xlink:type="arc" order="12"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/LOANSANDBORROWINGSScheduleofDetailedInformationaboutBorrowingsExplanatoryDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#LOANSANDBORROWINGSScheduleofDetailedInformationaboutBorrowingsExplanatoryDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/LOANSANDBORROWINGSScheduleofDetailedInformationaboutBorrowingsExplanatoryDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435c-7005-8167-5475e8f29951" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_019b47d6-435c-7796-87a5-0a7d13a1cf4e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435c-7005-8167-5475e8f29951" xlink:to="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_019b47d6-435c-7796-87a5-0a7d13a1cf4e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameAxis_019b47d6-435c-73fe-8035-217cd98c6af7" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_019b47d6-435c-7796-87a5-0a7d13a1cf4e" xlink:to="loc_ifrs-full_BorrowingsByNameAxis_019b47d6-435c-73fe-8035-217cd98c6af7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-435c-73fe-8035-217cd98c6af7_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019b47d6-435c-73fe-8035-217cd98c6af7" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-435c-73fe-8035-217cd98c6af7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-435c-7d93-8a6b-fa6d0dd3685c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019b47d6-435c-73fe-8035-217cd98c6af7" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-435c-7d93-8a6b-fa6d0dd3685c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CreditFacilityMember_019b47d6-435c-7542-9519-89d28e0f7bd7" xlink:href="eqx-20251231.xsd#eqx_CreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-435c-7d93-8a6b-fa6d0dd3685c" xlink:to="loc_eqx_CreditFacilityMember_019b47d6-435c-7542-9519-89d28e0f7bd7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SprottLoanMember_019ba08e-0183-7a40-9b7b-5c2f4e9c4155" xlink:href="eqx-20251231.xsd#eqx_SprottLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-435c-7d93-8a6b-fa6d0dd3685c" xlink:to="loc_eqx_SprottLoanMember_019ba08e-0183-7a40-9b7b-5c2f4e9c4155" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_TwoThousandAndTwentyThreeConvertibleNotesMember_019b47d6-435c-7f1a-bb4b-09580fdeb0e5" xlink:href="eqx-20251231.xsd#eqx_TwoThousandAndTwentyThreeConvertibleNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-435c-7d93-8a6b-fa6d0dd3685c" xlink:to="loc_eqx_TwoThousandAndTwentyThreeConvertibleNotesMember_019b47d6-435c-7f1a-bb4b-09580fdeb0e5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_TwoThousandAndTwentyFiveConvertibleNotesMember_019ba08f-e3ff-7a87-af43-e0e4f9ac6a47" xlink:href="eqx-20251231.xsd#eqx_TwoThousandAndTwentyFiveConvertibleNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-435c-7d93-8a6b-fa6d0dd3685c" xlink:to="loc_eqx_TwoThousandAndTwentyFiveConvertibleNotesMember_019ba08f-e3ff-7a87-af43-e0e4f9ac6a47" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_TwoThousandAndTwentyConvertibleNotesMember_019b47d6-435c-74c8-a4a8-4a329d089ba1" xlink:href="eqx-20251231.xsd#eqx_TwoThousandAndTwentyConvertibleNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-435c-7d93-8a6b-fa6d0dd3685c" xlink:to="loc_eqx_TwoThousandAndTwentyConvertibleNotesMember_019b47d6-435c-74c8-a4a8-4a329d089ba1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_OtherMember_019ba08f-2791-7c0d-91d0-972b0c42aa18" xlink:href="eqx-20251231.xsd#eqx_OtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-435c-7d93-8a6b-fa6d0dd3685c" xlink:to="loc_eqx_OtherMember_019ba08f-2791-7c0d-91d0-972b0c42aa18" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Borrowings_019b47d6-435c-7ad5-8eff-27ffe97e5f3c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Borrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435c-7005-8167-5475e8f29951" xlink:to="loc_ifrs-full_Borrowings_019b47d6-435c-7ad5-8eff-27ffe97e5f3c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentPortionOfLongtermBorrowings_019b47d6-435c-71a0-8a63-ba12074316ec" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentPortionOfLongtermBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435c-7005-8167-5475e8f29951" xlink:to="loc_ifrs-full_CurrentPortionOfLongtermBorrowings_019b47d6-435c-71a0-8a63-ba12074316ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LongtermBorrowings_019b47d6-435c-7e94-adc7-96191d31c8a9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LongtermBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_019b47d6-435c-7005-8167-5475e8f29951" xlink:to="loc_ifrs-full_LongtermBorrowings_019b47d6-435c-7e94-adc7-96191d31c8a9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Borrowings_019b47d6-435c-7e7b-b571-da9a8e7bc150" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Borrowings"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/LOANSANDBORROWINGSScheduleofDetailedInformationAboutchangesinLoansAndBorrowingsArisingFromInvestingAndFinancingActivitiesDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#LOANSANDBORROWINGSScheduleofDetailedInformationAboutchangesinLoansAndBorrowingsArisingFromInvestingAndFinancingActivitiesDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/LOANSANDBORROWINGSScheduleofDetailedInformationAboutchangesinLoansAndBorrowingsArisingFromInvestingAndFinancingActivitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfDetailedInformationAboutchangesinLoansAndBorrowingsLineItems_019b47d6-435c-7b31-b090-4b6804dcf2f6" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfDetailedInformationAboutchangesinLoansAndBorrowingsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_019b47d6-435c-7a12-8968-b09063a09cd4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutchangesinLoansAndBorrowingsLineItems_019b47d6-435c-7b31-b090-4b6804dcf2f6" xlink:to="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_019b47d6-435c-7a12-8968-b09063a09cd4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameAxis_019b47d6-435c-74d1-b6ba-66937ff37fcb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_019b47d6-435c-7a12-8968-b09063a09cd4" xlink:to="loc_ifrs-full_BorrowingsByNameAxis_019b47d6-435c-74d1-b6ba-66937ff37fcb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-435c-74d1-b6ba-66937ff37fcb_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019b47d6-435c-74d1-b6ba-66937ff37fcb" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-435c-74d1-b6ba-66937ff37fcb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-435c-781c-a487-08847367b0a0" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019b47d6-435c-74d1-b6ba-66937ff37fcb" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-435c-781c-a487-08847367b0a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CreditFacilityMember_019b47d6-435c-7508-9ed7-b13e8bdda254" xlink:href="eqx-20251231.xsd#eqx_CreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-435c-781c-a487-08847367b0a0" xlink:to="loc_eqx_CreditFacilityMember_019b47d6-435c-7508-9ed7-b13e8bdda254" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019ba095-bb05-7384-92cf-5aaf9426c144" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_019b47d6-435c-7a12-8968-b09063a09cd4" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019ba095-bb05-7384-92cf-5aaf9426c144" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019ba095-bb05-7384-92cf-5aaf9426c144_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019ba095-bb05-7384-92cf-5aaf9426c144" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019ba095-bb05-7384-92cf-5aaf9426c144_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019ba095-bb05-727e-95fc-6f7cca8adb82" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019ba095-bb05-7384-92cf-5aaf9426c144" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019ba095-bb05-727e-95fc-6f7cca8adb82" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CalibreAcquisitionMember_019ba096-6812-7008-ab4f-fceac976fb53" xlink:href="eqx-20251231.xsd#eqx_CalibreAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019ba095-bb05-727e-95fc-6f7cca8adb82" xlink:to="loc_eqx_CalibreAcquisitionMember_019ba096-6812-7008-ab4f-fceac976fb53" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_LoansAndBorrowingsAndAccruedInterestObligations_019b47d6-435c-75da-ba79-a5cf618f0f02" xlink:href="eqx-20251231.xsd#eqx_LoansAndBorrowingsAndAccruedInterestObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutchangesinLoansAndBorrowingsLineItems_019b47d6-435c-7b31-b090-4b6804dcf2f6" xlink:to="loc_eqx_LoansAndBorrowingsAndAccruedInterestObligations_019b47d6-435c-75da-ba79-a5cf618f0f02" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_019b47d6-435c-7af3-9407-80d385092b57" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutchangesinLoansAndBorrowingsLineItems_019b47d6-435c-7b31-b090-4b6804dcf2f6" xlink:to="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_019b47d6-435c-7af3-9407-80d385092b57" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_019b47d6-435c-7568-9a69-4a28a251217a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutchangesinLoansAndBorrowingsLineItems_019b47d6-435c-7b31-b090-4b6804dcf2f6" xlink:to="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_019b47d6-435c-7568-9a69-4a28a251217a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_InterestPaidLoansAndBorrowingClassifiedAsFinancingActivities_019b47d6-435c-7e6a-a20b-b74a8fff5606" xlink:href="eqx-20251231.xsd#eqx_InterestPaidLoansAndBorrowingClassifiedAsFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutchangesinLoansAndBorrowingsLineItems_019b47d6-435c-7b31-b090-4b6804dcf2f6" xlink:to="loc_eqx_InterestPaidLoansAndBorrowingClassifiedAsFinancingActivities_019b47d6-435c-7e6a-a20b-b74a8fff5606" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PaymentsForDebtIssueCostsAllocatedToDebt_019b47d6-435c-7aac-bb86-93c8a4ef25ef" xlink:href="eqx-20251231.xsd#eqx_PaymentsForDebtIssueCostsAllocatedToDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutchangesinLoansAndBorrowingsLineItems_019b47d6-435c-7b31-b090-4b6804dcf2f6" xlink:to="loc_eqx_PaymentsForDebtIssueCostsAllocatedToDebt_019b47d6-435c-7aac-bb86-93c8a4ef25ef" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AssumedAcquisition_019ba092-c519-717c-89d2-2a853bfa526c" xlink:href="eqx-20251231.xsd#eqx_AssumedAcquisition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutchangesinLoansAndBorrowingsLineItems_019b47d6-435c-7b31-b090-4b6804dcf2f6" xlink:to="loc_eqx_AssumedAcquisition_019ba092-c519-717c-89d2-2a853bfa526c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ConversionOfConvertibleNotes_019ba091-f1e9-72d5-add2-68ceed7da30a" xlink:href="eqx-20251231.xsd#eqx_ConversionOfConvertibleNotes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutchangesinLoansAndBorrowingsLineItems_019b47d6-435c-7b31-b090-4b6804dcf2f6" xlink:to="loc_eqx_ConversionOfConvertibleNotes_019ba091-f1e9-72d5-add2-68ceed7da30a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_InterestAndAccretionExpense_019b47d6-435c-7a1d-8c8f-c3aa0bf776d8" xlink:href="eqx-20251231.xsd#eqx_InterestAndAccretionExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutchangesinLoansAndBorrowingsLineItems_019b47d6-435c-7b31-b090-4b6804dcf2f6" xlink:to="loc_eqx_InterestAndAccretionExpense_019b47d6-435c-7a1d-8c8f-c3aa0bf776d8" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ExtinguishmentOfConvertibleNotes_019b47d6-435c-7b07-a68f-e40d3b221967" xlink:href="eqx-20251231.xsd#eqx_ExtinguishmentOfConvertibleNotes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutchangesinLoansAndBorrowingsLineItems_019b47d6-435c-7b31-b090-4b6804dcf2f6" xlink:to="loc_eqx_ExtinguishmentOfConvertibleNotes_019b47d6-435c-7b07-a68f-e40d3b221967" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_RecognitionOfNewConvertibleNotes_019b47d6-435c-7331-b5bb-9aafcd657f72" xlink:href="eqx-20251231.xsd#eqx_RecognitionOfNewConvertibleNotes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutchangesinLoansAndBorrowingsLineItems_019b47d6-435c-7b31-b090-4b6804dcf2f6" xlink:to="loc_eqx_RecognitionOfNewConvertibleNotes_019b47d6-435c-7331-b5bb-9aafcd657f72" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GainLossOnModificationOfDebt_019b47d6-435c-79c7-b159-383af9bf0988" xlink:href="eqx-20251231.xsd#eqx_GainLossOnModificationOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutchangesinLoansAndBorrowingsLineItems_019b47d6-435c-7b31-b090-4b6804dcf2f6" xlink:to="loc_eqx_GainLossOnModificationOfDebt_019b47d6-435c-79c7-b159-383af9bf0988" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_LoansAndBorrowingsAndAccruedInterestObligations_019b47d6-435c-7288-92d3-a56b46840e9e" xlink:href="eqx-20251231.xsd#eqx_LoansAndBorrowingsAndAccruedInterestObligations"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestPayable_019b47d6-435c-7afb-a110-2708b4392956" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutchangesinLoansAndBorrowingsLineItems_019b47d6-435c-7b31-b090-4b6804dcf2f6" xlink:to="loc_ifrs-full_InterestPayable_019b47d6-435c-7afb-a110-2708b4392956" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Borrowings_019b47d6-435c-7ad7-9512-1e7f968d99e2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Borrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutchangesinLoansAndBorrowingsLineItems_019b47d6-435c-7b31-b090-4b6804dcf2f6" xlink:to="loc_ifrs-full_Borrowings_019b47d6-435c-7ad7-9512-1e7f968d99e2" xlink:type="arc" order="13"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/LOANSANDBORROWINGSAdditionalInformationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#LOANSANDBORROWINGSAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/LOANSANDBORROWINGSAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfLoansAndBorrowingsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfLoansAndBorrowingsTable_019b47d6-435c-78b6-b922-6d6af0720d46" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfLoansAndBorrowingsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_DisclosureOfLoansAndBorrowingsTable_019b47d6-435c-78b6-b922-6d6af0720d46" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SyndicateAxis_019ba112-0452-7bff-9a86-92e56508a565" xlink:href="eqx-20251231.xsd#eqx_SyndicateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsTable_019b47d6-435c-78b6-b922-6d6af0720d46" xlink:to="loc_eqx_SyndicateAxis_019ba112-0452-7bff-9a86-92e56508a565" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SyndicateDomain_019ba112-0452-7bff-9a86-92e56508a565_default" xlink:href="eqx-20251231.xsd#eqx_SyndicateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_eqx_SyndicateAxis_019ba112-0452-7bff-9a86-92e56508a565" xlink:to="loc_eqx_SyndicateDomain_019ba112-0452-7bff-9a86-92e56508a565_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SyndicateDomain_019ba112-0452-76b1-9296-2096a84d88fe" xlink:href="eqx-20251231.xsd#eqx_SyndicateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_eqx_SyndicateAxis_019ba112-0452-7bff-9a86-92e56508a565" xlink:to="loc_eqx_SyndicateDomain_019ba112-0452-76b1-9296-2096a84d88fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BankOfNovaMontrealSocieteGeneraleAndIngCapitalLlcMember_019ba112-0452-7cb1-ae2c-f3e51f790cb5" xlink:href="eqx-20251231.xsd#eqx_BankOfNovaMontrealSocieteGeneraleAndIngCapitalLlcMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_SyndicateDomain_019ba112-0452-76b1-9296-2096a84d88fe" xlink:to="loc_eqx_BankOfNovaMontrealSocieteGeneraleAndIngCapitalLlcMember_019ba112-0452-7cb1-ae2c-f3e51f790cb5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameAxis_019ba112-0452-7fc7-8e11-5b5e196a7aee" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsTable_019b47d6-435c-78b6-b922-6d6af0720d46" xlink:to="loc_ifrs-full_BorrowingsByNameAxis_019ba112-0452-7fc7-8e11-5b5e196a7aee" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019ba112-0452-7fc7-8e11-5b5e196a7aee_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019ba112-0452-7fc7-8e11-5b5e196a7aee" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019ba112-0452-7fc7-8e11-5b5e196a7aee_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019ba112-0452-7dc0-9fdb-7c34bb8c4e03" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019ba112-0452-7fc7-8e11-5b5e196a7aee" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019ba112-0452-7dc0-9fdb-7c34bb8c4e03" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_RevolvingCreditFacility1Member_019ba112-0452-768e-bd08-7497cb1b7006" xlink:href="eqx-20251231.xsd#eqx_RevolvingCreditFacility1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019ba112-0452-7dc0-9fdb-7c34bb8c4e03" xlink:to="loc_eqx_RevolvingCreditFacility1Member_019ba112-0452-768e-bd08-7497cb1b7006" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_TermLoanMember_019ba112-0452-7dc7-9af4-e86094582615" xlink:href="eqx-20251231.xsd#eqx_TermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019ba112-0452-7dc0-9fdb-7c34bb8c4e03" xlink:to="loc_eqx_TermLoanMember_019ba112-0452-7dc7-9af4-e86094582615" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_RevolvingCreditFacilityMember_019ba112-2b57-7dc5-8f2e-210efea4aa11" xlink:href="eqx-20251231.xsd#eqx_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019ba112-0452-7dc0-9fdb-7c34bb8c4e03" xlink:to="loc_eqx_RevolvingCreditFacilityMember_019ba112-2b57-7dc5-8f2e-210efea4aa11" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SprottLoanMember_019ba112-5b31-764e-9442-8ab9eb067c67" xlink:href="eqx-20251231.xsd#eqx_SprottLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019ba112-0452-7dc0-9fdb-7c34bb8c4e03" xlink:to="loc_eqx_SprottLoanMember_019ba112-5b31-764e-9442-8ab9eb067c67" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_TwoThousandAndTwentyThreeConvertibleNotesMember_019ba112-84d3-7db1-a6fa-01b62d25583d" xlink:href="eqx-20251231.xsd#eqx_TwoThousandAndTwentyThreeConvertibleNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019ba112-0452-7dc0-9fdb-7c34bb8c4e03" xlink:to="loc_eqx_TwoThousandAndTwentyThreeConvertibleNotesMember_019ba112-84d3-7db1-a6fa-01b62d25583d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_TwoThousandAndTwentyFiveConvertibleNotesMember_019ba113-0124-78d6-83d6-5488e4010b79" xlink:href="eqx-20251231.xsd#eqx_TwoThousandAndTwentyFiveConvertibleNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019ba112-0452-7dc0-9fdb-7c34bb8c4e03" xlink:to="loc_eqx_TwoThousandAndTwentyFiveConvertibleNotesMember_019ba113-0124-78d6-83d6-5488e4010b79" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_TwoThousandAndTwentyConvertibleNotesMember_019ba113-0124-7a8f-a49c-7256f9db3d66" xlink:href="eqx-20251231.xsd#eqx_TwoThousandAndTwentyConvertibleNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019ba112-0452-7dc0-9fdb-7c34bb8c4e03" xlink:to="loc_eqx_TwoThousandAndTwentyConvertibleNotesMember_019ba113-0124-7a8f-a49c-7256f9db3d66" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_TwoThousandAndNineteenConvertibleNotesMember_019ba113-0124-7160-a327-1699919cdd92" xlink:href="eqx-20251231.xsd#eqx_TwoThousandAndNineteenConvertibleNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019ba112-0452-7dc0-9fdb-7c34bb8c4e03" xlink:to="loc_eqx_TwoThousandAndNineteenConvertibleNotesMember_019ba113-0124-7160-a327-1699919cdd92" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RangeAxis_019ba112-0452-760e-97d2-11c781644941" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsTable_019b47d6-435c-78b6-b922-6d6af0720d46" xlink:to="loc_ifrs-full_RangeAxis_019ba112-0452-760e-97d2-11c781644941" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RangeDomain_019ba112-0452-760e-97d2-11c781644941_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_RangeAxis_019ba112-0452-760e-97d2-11c781644941" xlink:to="loc_ifrs-full_RangeDomain_019ba112-0452-760e-97d2-11c781644941_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RangeDomain_019ba112-0452-74f8-8f5e-82ed967105d3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_RangeAxis_019ba112-0452-760e-97d2-11c781644941" xlink:to="loc_ifrs-full_RangeDomain_019ba112-0452-74f8-8f5e-82ed967105d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BottomOfRangeMember_019ba112-0452-7738-ae39-07e705c0a357" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BottomOfRangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangeDomain_019ba112-0452-74f8-8f5e-82ed967105d3" xlink:to="loc_ifrs-full_BottomOfRangeMember_019ba112-0452-7738-ae39-07e705c0a357" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TopOfRangeMember_019ba112-0452-7aa6-9cc3-f6553a832615" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TopOfRangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangeDomain_019ba112-0452-74f8-8f5e-82ed967105d3" xlink:to="loc_ifrs-full_TopOfRangeMember_019ba112-0452-7aa6-9cc3-f6553a832615" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInAssociatesAxis_019ba113-0124-78a8-9a23-f5564a0628cb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInAssociatesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsTable_019b47d6-435c-78b6-b922-6d6af0720d46" xlink:to="loc_ifrs-full_SignificantInvestmentsInAssociatesAxis_019ba113-0124-78a8-9a23-f5564a0628cb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019ba113-0124-78a8-9a23-f5564a0628cb_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInAssociatesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SignificantInvestmentsInAssociatesAxis_019ba113-0124-78a8-9a23-f5564a0628cb" xlink:to="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019ba113-0124-78a8-9a23-f5564a0628cb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019ba113-0124-7c0d-829c-f2ad75fe3482" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInAssociatesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SignificantInvestmentsInAssociatesAxis_019ba113-0124-78a8-9a23-f5564a0628cb" xlink:to="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019ba113-0124-7c0d-829c-f2ad75fe3482" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CalibreMiningCorpMember_019ba113-0124-77f7-8f50-f3f9da1d308d" xlink:href="eqx-20251231.xsd#eqx_CalibreMiningCorpMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019ba113-0124-7c0d-829c-f2ad75fe3482" xlink:to="loc_eqx_CalibreMiningCorpMember_019ba113-0124-77f7-8f50-f3f9da1d308d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingTermsAxis_019bf259-a605-7334-9156-b14dd63fa1f7" xlink:href="eqx-20251231.xsd#eqx_BorrowingTermsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsTable_019b47d6-435c-78b6-b922-6d6af0720d46" xlink:to="loc_eqx_BorrowingTermsAxis_019bf259-a605-7334-9156-b14dd63fa1f7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingTermsDomain_019bf259-a605-7334-9156-b14dd63fa1f7_default" xlink:href="eqx-20251231.xsd#eqx_BorrowingTermsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_eqx_BorrowingTermsAxis_019bf259-a605-7334-9156-b14dd63fa1f7" xlink:to="loc_eqx_BorrowingTermsDomain_019bf259-a605-7334-9156-b14dd63fa1f7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingTermsDomain_019bf259-a605-7767-ac12-d9cce1bfb3f6" xlink:href="eqx-20251231.xsd#eqx_BorrowingTermsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_eqx_BorrowingTermsAxis_019bf259-a605-7334-9156-b14dd63fa1f7" xlink:to="loc_eqx_BorrowingTermsDomain_019bf259-a605-7767-ac12-d9cce1bfb3f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsTermOneMember_019bf25b-5b34-7c03-b583-b71f1baee2a9" xlink:href="eqx-20251231.xsd#eqx_BorrowingsTermOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_BorrowingTermsDomain_019bf259-a605-7767-ac12-d9cce1bfb3f6" xlink:to="loc_eqx_BorrowingsTermOneMember_019bf25b-5b34-7c03-b583-b71f1baee2a9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsTermTwoMember_019bf25b-c8fa-766a-9dc9-8716dadfebb6" xlink:href="eqx-20251231.xsd#eqx_BorrowingsTermTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_BorrowingTermsDomain_019bf259-a605-7767-ac12-d9cce1bfb3f6" xlink:to="loc_eqx_BorrowingsTermTwoMember_019bf25b-c8fa-766a-9dc9-8716dadfebb6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfInterestRatesAxis_019bf261-5e25-7a1f-8c82-90ff4520b06d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfInterestRatesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsTable_019b47d6-435c-78b6-b922-6d6af0720d46" xlink:to="loc_ifrs-full_TypesOfInterestRatesAxis_019bf261-5e25-7a1f-8c82-90ff4520b06d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfInterestRatesDomain_019bf261-5e25-7a1f-8c82-90ff4520b06d_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfInterestRatesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfInterestRatesAxis_019bf261-5e25-7a1f-8c82-90ff4520b06d" xlink:to="loc_ifrs-full_TypesOfInterestRatesDomain_019bf261-5e25-7a1f-8c82-90ff4520b06d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfInterestRatesDomain_019bf261-5e25-78b7-9602-254fed6f14a5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfInterestRatesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfInterestRatesAxis_019bf261-5e25-7a1f-8c82-90ff4520b06d" xlink:to="loc_ifrs-full_TypesOfInterestRatesDomain_019bf261-5e25-78b7-9602-254fed6f14a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SecuredOvernightFinancingRateMember_019bf262-4b4c-7904-84fa-9cdcae11e4e3" xlink:href="eqx-20251231.xsd#eqx_SecuredOvernightFinancingRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfInterestRatesDomain_019bf261-5e25-78b7-9602-254fed6f14a5" xlink:to="loc_eqx_SecuredOvernightFinancingRateMember_019bf262-4b4c-7904-84fa-9cdcae11e4e3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsMaximumCapacity_019ba112-0452-7e95-8b76-87fc3406c8fc" xlink:href="eqx-20251231.xsd#eqx_BorrowingsMaximumCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_BorrowingsMaximumCapacity_019ba112-0452-7e95-8b76-87fc3406c8fc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsAccordionFeatureAmount_019ba112-0452-73d5-9108-fa0ee36f5aab" xlink:href="eqx-20251231.xsd#eqx_BorrowingsAccordionFeatureAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_BorrowingsAccordionFeatureAmount_019ba112-0452-73d5-9108-fa0ee36f5aab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsQuarterlyRepaymentPercentOfOutstandingPrincipal_019bf236-0a03-7d83-9c15-ad063d1f8bbb" xlink:href="eqx-20251231.xsd#eqx_BorrowingsQuarterlyRepaymentPercentOfOutstandingPrincipal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_BorrowingsQuarterlyRepaymentPercentOfOutstandingPrincipal_019bf236-0a03-7d83-9c15-ad063d1f8bbb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsAccordionFeatureMaximumAmount_019ba112-0452-7310-8a15-ef64d1ebd798" xlink:href="eqx-20251231.xsd#eqx_BorrowingsAccordionFeatureMaximumAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_BorrowingsAccordionFeatureMaximumAmount_019ba112-0452-7310-8a15-ef64d1ebd798" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsAdjustmentToInterestRateBasis_019ba112-0452-773a-b155-4446e1195944" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsAdjustmentToInterestRateBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_ifrs-full_BorrowingsAdjustmentToInterestRateBasis_019ba112-0452-773a-b155-4446e1195944" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsAdjustmentToLeverageRatio_019ba112-0452-73cd-b0fd-3c74a0e12084" xlink:href="eqx-20251231.xsd#eqx_BorrowingsAdjustmentToLeverageRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_BorrowingsAdjustmentToLeverageRatio_019ba112-0452-73cd-b0fd-3c74a0e12084" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsAdjustmentToLeverageRatioInterestRate_019ba112-0452-730c-8da5-b3afd0ad6dd2" xlink:href="eqx-20251231.xsd#eqx_BorrowingsAdjustmentToLeverageRatioInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_BorrowingsAdjustmentToLeverageRatioInterestRate_019ba112-0452-730c-8da5-b3afd0ad6dd2" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GainLossOnModificationOfDebt_019ba112-2b57-773a-b473-6d911e7fece8" xlink:href="eqx-20251231.xsd#eqx_GainLossOnModificationOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_GainLossOnModificationOfDebt_019ba112-2b57-773a-b473-6d911e7fece8" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_019ba112-2b57-7aea-b32f-11738e0d7190" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_019ba112-2b57-7aea-b32f-11738e0d7190" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityEffectiveWeightedAverageInterestRate_019c9994-9293-7957-8228-6f084872271f" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityEffectiveWeightedAverageInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_ContractLiabilityEffectiveWeightedAverageInterestRate_019c9994-9293-7957-8228-6f084872271f" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_019bf240-e253-775e-9113-6c4959b03318" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_019bf240-e253-775e-9113-6c4959b03318" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Borrowings_019ba112-2b57-755a-9d23-dd5db056bb53" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Borrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_ifrs-full_Borrowings_019ba112-2b57-755a-9d23-dd5db056bb53" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShorttermBorrowings_019ba112-2b57-7320-a4a0-de4ae6407052" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShorttermBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_ifrs-full_ShorttermBorrowings_019ba112-2b57-7320-a4a0-de4ae6407052" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_UndrawnBorrowingFacilities_019ba112-2b57-7f81-b1fa-823eacf600d2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UndrawnBorrowingFacilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_ifrs-full_UndrawnBorrowingFacilities_019ba112-2b57-7f81-b1fa-823eacf600d2" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_RepaymentOfOutstanding_019c22a3-4923-79c7-8906-d24dd7cff9a7" xlink:href="eqx-20251231.xsd#eqx_RepaymentOfOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_RepaymentOfOutstanding_019c22a3-4923-79c7-8906-d24dd7cff9a7" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsRepaymentPercentOfPrincipal_019ba112-5b31-7844-ac5a-80e4ec163957" xlink:href="eqx-20251231.xsd#eqx_BorrowingsRepaymentPercentOfPrincipal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_BorrowingsRepaymentPercentOfPrincipal_019ba112-5b31-7844-ac5a-80e4ec163957" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AdjustedBorrwingDebtInstrumentPercentage_019ba112-5b31-7d5d-bded-c0a56b6a9c31" xlink:href="eqx-20251231.xsd#eqx_AdjustedBorrwingDebtInstrumentPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_AdjustedBorrwingDebtInstrumentPercentage_019ba112-5b31-7d5d-bded-c0a56b6a9c31" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_RemainingBorrwingDebtInstrumentPercentage_019ba112-5b31-7e74-9765-1fb3305c1051" xlink:href="eqx-20251231.xsd#eqx_RemainingBorrwingDebtInstrumentPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_RemainingBorrwingDebtInstrumentPercentage_019ba112-5b31-7e74-9765-1fb3305c1051" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CarryingAmountOfTheFinancialLiability_019ba112-84d3-751a-9869-3c3913f74296" xlink:href="eqx-20251231.xsd#eqx_CarryingAmountOfTheFinancialLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_CarryingAmountOfTheFinancialLiability_019ba112-84d3-751a-9869-3c3913f74296" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CarryingAmountOfTheFinancialLiabilityCurrent_019ba112-84d3-71d9-ae51-9ac790ff16d2" xlink:href="eqx-20251231.xsd#eqx_CarryingAmountOfTheFinancialLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_CarryingAmountOfTheFinancialLiabilityCurrent_019ba112-84d3-71d9-ae51-9ac790ff16d2" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsNumberOfRepayments_019bf257-9fe0-78e6-aeb8-a0711adf6f6f" xlink:href="eqx-20251231.xsd#eqx_BorrowingsNumberOfRepayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_BorrowingsNumberOfRepayments_019bf257-9fe0-78e6-aeb8-a0711adf6f6f" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsInterestRate_019ba112-84d3-71f9-b221-1dbfa4d27c98" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_ifrs-full_BorrowingsInterestRate_019ba112-84d3-71f9-b221-1dbfa4d27c98" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsAnnualInterestRate_019bf266-0f5f-7bb2-9e0c-538a46b70d54" xlink:href="eqx-20251231.xsd#eqx_BorrowingsAnnualInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_BorrowingsAnnualInterestRate_019bf266-0f5f-7bb2-9e0c-538a46b70d54" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsAdditionalPayment_019ba112-84d3-76bf-854a-0c4ba0ccd48a" xlink:href="eqx-20251231.xsd#eqx_BorrowingsAdditionalPayment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_BorrowingsAdditionalPayment_019ba112-84d3-76bf-854a-0c4ba0ccd48a" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsAdditionalPaymentReceived_019c370d-fdd2-7528-b394-946a1c8a1a39" xlink:href="eqx-20251231.xsd#eqx_BorrowingsAdditionalPaymentReceived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_BorrowingsAdditionalPaymentReceived_019c370d-fdd2-7528-b394-946a1c8a1a39" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsRepaymentMonthlyInstalments_019ba112-84d3-71fe-a487-497692c6710a" xlink:href="eqx-20251231.xsd#eqx_BorrowingsRepaymentMonthlyInstalments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_BorrowingsRepaymentMonthlyInstalments_019ba112-84d3-71fe-a487-497692c6710a" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ConvertibleInstrumentsFixedConversionPrice_019ba112-bb3a-740f-81aa-32e9a94fa48f" xlink:href="eqx-20251231.xsd#eqx_ConvertibleInstrumentsFixedConversionPrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_ConvertibleInstrumentsFixedConversionPrice_019ba112-bb3a-740f-81aa-32e9a94fa48f" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NumberOfThresholdTradingDaysConvertible_019ba112-bb3a-7690-b0c8-5d95ac328eab" xlink:href="eqx-20251231.xsd#eqx_NumberOfThresholdTradingDaysConvertible"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_NumberOfThresholdTradingDaysConvertible_019ba112-bb3a-7690-b0c8-5d95ac328eab" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NumberOfConsecutiveTradingDaysForDeterminingTheSharePrice_019ba112-bb3a-7118-98cd-93b836c328b4" xlink:href="eqx-20251231.xsd#eqx_NumberOfConsecutiveTradingDaysForDeterminingTheSharePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_NumberOfConsecutiveTradingDaysForDeterminingTheSharePrice_019ba112-bb3a-7118-98cd-93b836c328b4" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger1_019ba112-bb3a-7630-84d7-0308635eaedd" xlink:href="eqx-20251231.xsd#eqx_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger1_019ba112-bb3a-7630-84d7-0308635eaedd" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DebtInstrumentRedemptionPricePercentage1_019ba112-bb3a-7df8-9cb4-f1c8b8018161" xlink:href="eqx-20251231.xsd#eqx_DebtInstrumentRedemptionPricePercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_DebtInstrumentRedemptionPricePercentage1_019ba112-bb3a-7df8-9cb4-f1c8b8018161" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DebtInstrumentFundamentalChangeCashRedemptionPricePercentage_019ba112-bb3a-7819-bbdd-acc6ab67b307" xlink:href="eqx-20251231.xsd#eqx_DebtInstrumentFundamentalChangeCashRedemptionPricePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_DebtInstrumentFundamentalChangeCashRedemptionPricePercentage_019ba112-bb3a-7819-bbdd-acc6ab67b307" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EffectiveInterestRateUsedInBorrowings_019ba112-bb3a-7200-8a08-bf419f3de5cf" xlink:href="eqx-20251231.xsd#eqx_EffectiveInterestRateUsedInBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_EffectiveInterestRateUsedInBorrowings_019ba112-bb3a-7200-8a08-bf419f3de5cf" xlink:type="arc" order="32"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LongtermBorrowings_019ba113-0124-7a84-882a-ffdf32bab1e7" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LongtermBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_ifrs-full_LongtermBorrowings_019ba113-0124-7a84-882a-ffdf32bab1e7" xlink:type="arc" order="33"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NotesReceivablePrincipal_019ba113-0124-7d0c-96dc-a11f3dc3a2da" xlink:href="eqx-20251231.xsd#eqx_NotesReceivablePrincipal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_NotesReceivablePrincipal_019ba113-0124-7d0c-96dc-a11f3dc3a2da" xlink:type="arc" order="34"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BusinessCombinationConvertibleNoteRepaymentPeriodAfterChangeOfControl_019ba113-0124-7525-9c1f-ee18cea5387f" xlink:href="eqx-20251231.xsd#eqx_BusinessCombinationConvertibleNoteRepaymentPeriodAfterChangeOfControl"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_BusinessCombinationConvertibleNoteRepaymentPeriodAfterChangeOfControl_019ba113-0124-7525-9c1f-ee18cea5387f" xlink:type="arc" order="35"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_FairValueFromIssuingShares_019ba113-0124-74be-b575-2a2a4e5d7c0d" xlink:href="eqx-20251231.xsd#eqx_FairValueFromIssuingShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_FairValueFromIssuingShares_019ba113-0124-74be-b575-2a2a4e5d7c0d" xlink:type="arc" order="36"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_IssuingSharesAllocatedToLiabilityComponent_019ba113-0124-73fd-a4d6-bc271911a7d9" xlink:href="eqx-20251231.xsd#eqx_IssuingSharesAllocatedToLiabilityComponent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_IssuingSharesAllocatedToLiabilityComponent_019ba113-0124-73fd-a4d6-bc271911a7d9" xlink:type="arc" order="37"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EquityComponentResidualAmount_019ba113-0124-7b12-b5e0-008b4bcc77cc" xlink:href="eqx-20251231.xsd#eqx_EquityComponentResidualAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_EquityComponentResidualAmount_019ba113-0124-7b12-b5e0-008b4bcc77cc" xlink:type="arc" order="38"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_FinancialLiabilityDerecognizedBorrowings_019ba113-0124-7131-9b18-1c6518b26d43" xlink:href="eqx-20251231.xsd#eqx_FinancialLiabilityDerecognizedBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_FinancialLiabilityDerecognizedBorrowings_019ba113-0124-7131-9b18-1c6518b26d43" xlink:type="arc" order="39"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ModificationFinancialLiabilityBorrowings_019ba113-0124-73e9-96e8-cbc5a776fe4f" xlink:href="eqx-20251231.xsd#eqx_ModificationFinancialLiabilityBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_ModificationFinancialLiabilityBorrowings_019ba113-0124-73e9-96e8-cbc5a776fe4f" xlink:type="arc" order="40"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractualPrincipalAndInterestPaymentDiscountRate_019ba113-0124-73df-8d14-5863a5d1cb4d" xlink:href="eqx-20251231.xsd#eqx_ContractualPrincipalAndInterestPaymentDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_ContractualPrincipalAndInterestPaymentDiscountRate_019ba113-0124-73df-8d14-5863a5d1cb4d" xlink:type="arc" order="41"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GainOnModificationOfConvertibleNotes_019ba113-0124-7688-a81b-f24b6c965562" xlink:href="eqx-20251231.xsd#eqx_GainOnModificationOfConvertibleNotes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_GainOnModificationOfConvertibleNotes_019ba113-0124-7688-a81b-f24b6c965562" xlink:type="arc" order="42"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ConversionOptionReservesToShareCapital_019ba113-0124-73e8-abf7-900f44273c46" xlink:href="eqx-20251231.xsd#eqx_ConversionOptionReservesToShareCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_ConversionOptionReservesToShareCapital_019ba113-0124-73e8-abf7-900f44273c46" xlink:type="arc" order="43"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfDiscountRatesAppliedToCashFlowProjections_019ba113-3432-7f21-bbc6-3f9b67eafc19" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfDiscountRatesAppliedToCashFlowProjections"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_ifrs-full_DescriptionOfDiscountRatesAppliedToCashFlowProjections_019ba113-3432-7f21-bbc6-3f9b67eafc19" xlink:type="arc" order="44"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NumberOfSharesConversionOfConvertibleNotesAllocatedToEquity_019ba113-3432-7024-835b-89e561f566e9" xlink:href="eqx-20251231.xsd#eqx_NumberOfSharesConversionOfConvertibleNotesAllocatedToEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_NumberOfSharesConversionOfConvertibleNotesAllocatedToEquity_019ba113-3432-7024-835b-89e561f566e9" xlink:type="arc" order="45"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsConversionRate_019ba12e-e961-7a1a-a974-9126a1929ae9" xlink:href="eqx-20251231.xsd#eqx_BorrowingsConversionRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfLoansAndBorrowingsLineItems_019ba112-0452-70c2-8070-a73856f7c938" xlink:to="loc_eqx_BorrowingsConversionRate_019ba12e-e961-7a1a-a974-9126a1929ae9" xlink:type="arc" order="46"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/DEFERREDREVENUEScheduleofChangesInDeferredRevenueBalanceDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#DEFERREDREVENUEScheduleofChangesInDeferredRevenueBalanceDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/DEFERREDREVENUEScheduleofChangesInDeferredRevenueBalanceDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_019b47d6-443b-7909-aa79-299222f923db" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable_019b47d6-443b-7121-b1d3-6a01be3b9706" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_019b47d6-443b-7909-aa79-299222f923db" xlink:to="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable_019b47d6-443b-7121-b1d3-6a01be3b9706" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfContractsAxis_019b47d6-443b-7fcd-83cf-975d9417f2ed" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfContractsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable_019b47d6-443b-7121-b1d3-6a01be3b9706" xlink:to="loc_ifrs-full_TypesOfContractsAxis_019b47d6-443b-7fcd-83cf-975d9417f2ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfContractsDomain_019b47d6-443b-7fcd-83cf-975d9417f2ed_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfContractsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfContractsAxis_019b47d6-443b-7fcd-83cf-975d9417f2ed" xlink:to="loc_ifrs-full_TypesOfContractsDomain_019b47d6-443b-7fcd-83cf-975d9417f2ed_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfContractsDomain_019b47d6-443b-7e01-a3aa-d9a25d68cd2c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfContractsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfContractsAxis_019b47d6-443b-7fcd-83cf-975d9417f2ed" xlink:to="loc_ifrs-full_TypesOfContractsDomain_019b47d6-443b-7e01-a3aa-d9a25d68cd2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_StreamArrangementMember_019b47d6-443b-7dda-95f0-9f1180a45dd6" xlink:href="eqx-20251231.xsd#eqx_StreamArrangementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfContractsDomain_019b47d6-443b-7e01-a3aa-d9a25d68cd2c" xlink:to="loc_eqx_StreamArrangementMember_019b47d6-443b-7dda-95f0-9f1180a45dd6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GoldPrepayTransactionsMember_019b47d6-443b-7663-803d-9fbd09b150f3" xlink:href="eqx-20251231.xsd#eqx_GoldPrepayTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfContractsDomain_019b47d6-443b-7e01-a3aa-d9a25d68cd2c" xlink:to="loc_eqx_GoldPrepayTransactionsMember_019b47d6-443b-7663-803d-9fbd09b150f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GoldPurchaseAndSaleArrangementMember_019b47d6-443b-7297-8a8d-5f1fe126e973" xlink:href="eqx-20251231.xsd#eqx_GoldPurchaseAndSaleArrangementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfContractsDomain_019b47d6-443b-7e01-a3aa-d9a25d68cd2c" xlink:to="loc_eqx_GoldPurchaseAndSaleArrangementMember_019b47d6-443b-7297-8a8d-5f1fe126e973" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_OtherGoldPrepayArrangementMember_019ba073-74b6-723f-8083-66da16db9231" xlink:href="eqx-20251231.xsd#eqx_OtherGoldPrepayArrangementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfContractsDomain_019b47d6-443b-7e01-a3aa-d9a25d68cd2c" xlink:to="loc_eqx_OtherGoldPrepayArrangementMember_019ba073-74b6-723f-8083-66da16db9231" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContractLiabilities_019b47d6-443b-742d-b055-7bf12e051869" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContractLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_019b47d6-443b-7909-aa79-299222f923db" xlink:to="loc_ifrs-full_ContractLiabilities_019b47d6-443b-742d-b055-7bf12e051869" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilitiesPrepaymentsReceivedDuringPeriod_019b47d6-443b-7c14-adc6-4980f97f4718" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilitiesPrepaymentsReceivedDuringPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_019b47d6-443b-7909-aa79-299222f923db" xlink:to="loc_eqx_ContractLiabilitiesPrepaymentsReceivedDuringPeriod_019b47d6-443b-7c14-adc6-4980f97f4718" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityAssumedOnAcquisition_019b47d6-443b-71a3-8034-8b6aec4b5d47" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityAssumedOnAcquisition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_019b47d6-443b-7909-aa79-299222f923db" xlink:to="loc_eqx_ContractLiabilityAssumedOnAcquisition_019b47d6-443b-71a3-8034-8b6aec4b5d47" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DecreaseThroughPerformanceObligationBeingSatisfiedContractLiabilities_019b47d6-443b-7322-88fe-f242d6598b4c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DecreaseThroughPerformanceObligationBeingSatisfiedContractLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_019b47d6-443b-7909-aa79-299222f923db" xlink:to="loc_ifrs-full_DecreaseThroughPerformanceObligationBeingSatisfiedContractLiabilities_019b47d6-443b-7322-88fe-f242d6598b4c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilitiesAccretionExpense_019b47d6-443b-7dd1-9cf4-6ea47de08f95" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilitiesAccretionExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_019b47d6-443b-7909-aa79-299222f923db" xlink:to="loc_eqx_ContractLiabilitiesAccretionExpense_019b47d6-443b-7dd1-9cf4-6ea47de08f95" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContractLiabilities_019b47d6-443b-7f60-8456-25a293dbd990" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContractLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentContractLiabilities_019b47d6-443b-70a2-81db-68c58c040eec" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentContractLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_019b47d6-443b-7909-aa79-299222f923db" xlink:to="loc_ifrs-full_CurrentContractLiabilities_019b47d6-443b-70a2-81db-68c58c040eec" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentContractLiabilities_019b47d6-443b-77c5-9986-bb8eb443b15f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentContractLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_019b47d6-443b-7909-aa79-299222f923db" xlink:to="loc_ifrs-full_NoncurrentContractLiabilities_019b47d6-443b-77c5-9986-bb8eb443b15f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContractLiabilities_019b47d6-443b-7273-ba16-9e8ec02768b6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContractLiabilities"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/DEFERREDREVENUEAdditionalInformationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#DEFERREDREVENUEAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/DEFERREDREVENUEAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:href="eqx-20251231.xsd#eqx_DeferredRevenuePrepaymentSaleTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DeferredRevenuePrepaymentSaleTransactionTable_019b47d6-443b-7b6e-8829-17daaa496039" xlink:href="eqx-20251231.xsd#eqx_DeferredRevenuePrepaymentSaleTransactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_DeferredRevenuePrepaymentSaleTransactionTable_019b47d6-443b-7b6e-8829-17daaa496039" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfContractsAxis_019ba087-0e76-7c36-9828-00dcdaf29c7a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfContractsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionTable_019b47d6-443b-7b6e-8829-17daaa496039" xlink:to="loc_ifrs-full_TypesOfContractsAxis_019ba087-0e76-7c36-9828-00dcdaf29c7a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfContractsDomain_019ba087-0e76-7c36-9828-00dcdaf29c7a_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfContractsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfContractsAxis_019ba087-0e76-7c36-9828-00dcdaf29c7a" xlink:to="loc_ifrs-full_TypesOfContractsDomain_019ba087-0e76-7c36-9828-00dcdaf29c7a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfContractsDomain_019ba087-0e76-7944-8365-e4e95bfdd1ad" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfContractsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfContractsAxis_019ba087-0e76-7c36-9828-00dcdaf29c7a" xlink:to="loc_ifrs-full_TypesOfContractsDomain_019ba087-0e76-7944-8365-e4e95bfdd1ad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_StreamArrangementMember_019ba087-0e76-7d6a-b519-3bc497136a08" xlink:href="eqx-20251231.xsd#eqx_StreamArrangementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfContractsDomain_019ba087-0e76-7944-8365-e4e95bfdd1ad" xlink:to="loc_eqx_StreamArrangementMember_019ba087-0e76-7d6a-b519-3bc497136a08" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GoldPrepayTransactionsMember_019ba087-5ea2-7093-8fc1-53345edcd8cc" xlink:href="eqx-20251231.xsd#eqx_GoldPrepayTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfContractsDomain_019ba087-0e76-7944-8365-e4e95bfdd1ad" xlink:to="loc_eqx_GoldPrepayTransactionsMember_019ba087-5ea2-7093-8fc1-53345edcd8cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GoldPurchaseAndSaleArrangementMember_019ba087-92d1-7ae5-9203-3d8bb408ff7b" xlink:href="eqx-20251231.xsd#eqx_GoldPurchaseAndSaleArrangementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfContractsDomain_019ba087-0e76-7944-8365-e4e95bfdd1ad" xlink:to="loc_eqx_GoldPurchaseAndSaleArrangementMember_019ba087-92d1-7ae5-9203-3d8bb408ff7b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_OtherGoldPrepayArrangementMember_019ba087-92d1-78b7-a0d3-b4948eb588ad" xlink:href="eqx-20251231.xsd#eqx_OtherGoldPrepayArrangementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfContractsDomain_019ba087-0e76-7944-8365-e4e95bfdd1ad" xlink:to="loc_eqx_OtherGoldPrepayArrangementMember_019ba087-92d1-78b7-a0d3-b4948eb588ad" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GoldProductionLimitPercentage_019ba087-0e76-79a4-b962-3df7276fd3b4" xlink:href="eqx-20251231.xsd#eqx_GoldProductionLimitPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_GoldProductionLimitPercentage_019ba087-0e76-79a4-b962-3df7276fd3b4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityTotalGoldOuncesDelivered_019ba087-0e76-7ee6-a84f-4e08153abaef" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityTotalGoldOuncesDelivered"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityTotalGoldOuncesDelivered_019ba087-0e76-7ee6-a84f-4e08153abaef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_TotalGoldOuncesDeliveredPercentage_019ba087-0e76-7c8f-ae99-9e2649689af4" xlink:href="eqx-20251231.xsd#eqx_TotalGoldOuncesDeliveredPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_TotalGoldOuncesDeliveredPercentage_019ba087-0e76-7c8f-ae99-9e2649689af4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityPercentagesOfConsiderationFromPurchaser_019ba087-0e76-7757-80a3-488c5904e15f" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityPercentagesOfConsiderationFromPurchaser"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityPercentagesOfConsiderationFromPurchaser_019ba087-0e76-7757-80a3-488c5904e15f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityAccretedToEstimatedTransactionPricePercentage_019ba087-0e76-7c4f-9839-10291973c1d3" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityAccretedToEstimatedTransactionPricePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityAccretedToEstimatedTransactionPricePercentage_019ba087-0e76-7c4f-9839-10291973c1d3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityAverageCashConsiderationPerOunce_019ba087-5ea2-76e5-9529-f7a8d83536b3" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityAverageCashConsiderationPerOunce"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityAverageCashConsiderationPerOunce_019ba087-5ea2-76e5-9529-f7a8d83536b3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityDeferredRevenueObligationSatisfiedAmount_019ba087-5ea2-7577-9211-43137f4b5304" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityDeferredRevenueObligationSatisfiedAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityDeferredRevenueObligationSatisfiedAmount_019ba087-5ea2-7577-9211-43137f4b5304" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityTotalPrepayments_019ba087-5ea2-78e8-9e06-3d6b482aebee" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityTotalPrepayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityTotalPrepayments_019ba087-5ea2-78e8-9e06-3d6b482aebee" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityGoldOuncesDeliveredPerMonth_019ba087-5ea2-7143-86fe-03512840bf93" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityGoldOuncesDeliveredPerMonth"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityGoldOuncesDeliveredPerMonth_019ba087-5ea2-7143-86fe-03512840bf93" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityPrepaymentsAtFixedPriceBasis_019ba087-5ea2-7afc-9d26-dc9c257af7e7" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityPrepaymentsAtFixedPriceBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityPrepaymentsAtFixedPriceBasis_019ba087-5ea2-7afc-9d26-dc9c257af7e7" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilitySpotPriceBasisOfPerOunce_019ba087-5ea2-72f3-a631-db3409bec446" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilitySpotPriceBasisOfPerOunce"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilitySpotPriceBasisOfPerOunce_019ba087-5ea2-72f3-a631-db3409bec446" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityPrepaymentsAtSpotPriceBasis_019ba087-5ea2-7aea-b05a-e84d4c887a39" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityPrepaymentsAtSpotPriceBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityPrepaymentsAtSpotPriceBasis_019ba087-5ea2-7aea-b05a-e84d4c887a39" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityPrepaymentsAtSpotPriceBasisRemainingThresholdOunces_019ba087-5ea2-7a38-aa13-a6348718b53b" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityPrepaymentsAtSpotPriceBasisRemainingThresholdOunces"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityPrepaymentsAtSpotPriceBasisRemainingThresholdOunces_019ba087-5ea2-7a38-aa13-a6348718b53b" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilitySpotPriceBasisOfPerOunceRemainingThreshold_019ba087-5ea2-7eb0-b899-2a1143e6bb1a" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilitySpotPriceBasisOfPerOunceRemainingThreshold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilitySpotPriceBasisOfPerOunceRemainingThreshold_019ba087-5ea2-7eb0-b899-2a1143e6bb1a" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityDeferredOuncesWillBeDelivered_019ba087-5ea2-7f5b-a5af-666f18948bcb" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityDeferredOuncesWillBeDelivered"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityDeferredOuncesWillBeDelivered_019ba087-5ea2-7f5b-a5af-666f18948bcb" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityAdditionalDeferredGoldOuncesDelivered_019ba087-5ea2-765c-9792-df0e3aba0fd2" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityAdditionalDeferredGoldOuncesDelivered"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityAdditionalDeferredGoldOuncesDelivered_019ba087-5ea2-765c-9792-df0e3aba0fd2" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityTotalDeferredGoldOunces_019ba087-5ea2-767b-8179-1ebc0e94a027" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityTotalDeferredGoldOunces"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityTotalDeferredGoldOunces_019ba087-5ea2-767b-8179-1ebc0e94a027" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityAdditionalDeferredGoldDeliveredPerOunce_019ba087-5ea2-73ff-b768-0d24fb2328e8" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityAdditionalDeferredGoldDeliveredPerOunce"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityAdditionalDeferredGoldDeliveredPerOunce_019ba087-5ea2-73ff-b768-0d24fb2328e8" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityAdditionalDeferredGoldOunces_019ba087-5ea2-7e6b-b368-59a1e280350e" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityAdditionalDeferredGoldOunces"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityAdditionalDeferredGoldOunces_019ba087-5ea2-7e6b-b368-59a1e280350e" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityEffectiveWeightedAverageInterestRate_019ba087-5ea2-7885-96ec-8f2e6d5f3ee6" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityEffectiveWeightedAverageInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityEffectiveWeightedAverageInterestRate_019ba087-5ea2-7885-96ec-8f2e6d5f3ee6" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeOuncesRemainingToBeDelivered_019ba087-5ea2-7a09-a308-866e21c88f03" xlink:href="eqx-20251231.xsd#eqx_DerivativeOuncesRemainingToBeDelivered"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_DerivativeOuncesRemainingToBeDelivered_019ba087-5ea2-7a09-a308-866e21c88f03" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GoldOuncesProducedAmount_019ba087-92d1-7538-8db2-92af3f0e3468" xlink:href="eqx-20251231.xsd#eqx_GoldOuncesProducedAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_GoldOuncesProducedAmount_019ba087-92d1-7538-8db2-92af3f0e3468" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GoldOuncesProducedPercentage_019ba087-92d1-7e10-83bc-0a4ffcebee5c" xlink:href="eqx-20251231.xsd#eqx_GoldOuncesProducedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_GoldOuncesProducedPercentage_019ba087-92d1-7e10-83bc-0a4ffcebee5c" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GoldOuncesProductionLimitTotal_019ba087-92d1-7e75-8cba-1dbc16ba0375" xlink:href="eqx-20251231.xsd#eqx_GoldOuncesProductionLimitTotal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_GoldOuncesProductionLimitTotal_019ba087-92d1-7e75-8cba-1dbc16ba0375" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Advances_019ba087-92d1-7008-b38a-5300e3820d6e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Advances"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_ifrs-full_Advances_019ba087-92d1-7008-b38a-5300e3820d6e" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityOptionToSettleEarlyPercentageOfDeliveryObligationMaximum_019ba087-92d1-762e-9945-511004e11635" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityOptionToSettleEarlyPercentageOfDeliveryObligationMaximum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityOptionToSettleEarlyPercentageOfDeliveryObligationMaximum_019ba087-92d1-762e-9945-511004e11635" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityEarlySettlementSpotGoldPriceThreshold_019ba087-92d1-73b8-a654-1dddc50951ea" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityEarlySettlementSpotGoldPriceThreshold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityEarlySettlementSpotGoldPriceThreshold_019ba087-92d1-73b8-a654-1dddc50951ea" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractLiabilityEffectiveInterestRate_019ba087-92d1-7e9a-a702-5f982248024a" xlink:href="eqx-20251231.xsd#eqx_ContractLiabilityEffectiveInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_eqx_ContractLiabilityEffectiveInterestRate_019ba087-92d1-7e9a-a702-5f982248024a" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RevenueFromContractsWithCustomers_019ba087-92d1-7b5d-92ee-5eaf03052f1a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevenueFromContractsWithCustomers"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DeferredRevenuePrepaymentSaleTransactionLineItems_019ba087-0e76-7478-a171-14b276b6c153" xlink:to="loc_ifrs-full_RevenueFromContractsWithCustomers_019ba087-92d1-7b5d-92ee-5eaf03052f1a" xlink:type="arc" order="28"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationofDerivativeAssetsDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationofDerivativeAssetsDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationofDerivativeAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7820-a212-c3b35c39b245" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7774-99e0-f3bf72cb75ef" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7820-a212-c3b35c39b245" xlink:to="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7774-99e0-f3bf72cb75ef" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CategoriesOfFinancialAssetsAxis_019b47d6-443b-7716-8b65-de5bfe2e47a3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialAssetsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7774-99e0-f3bf72cb75ef" xlink:to="loc_ifrs-full_CategoriesOfFinancialAssetsAxis_019b47d6-443b-7716-8b65-de5bfe2e47a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CategoriesOfFinancialAssetsDomain_019b47d6-443b-7716-8b65-de5bfe2e47a3_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfFinancialAssetsAxis_019b47d6-443b-7716-8b65-de5bfe2e47a3" xlink:to="loc_ifrs-full_CategoriesOfFinancialAssetsDomain_019b47d6-443b-7716-8b65-de5bfe2e47a3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CategoriesOfFinancialAssetsDomain_019b47d6-443b-724f-a556-7d0dd9b9ddb9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfFinancialAssetsAxis_019b47d6-443b-7716-8b65-de5bfe2e47a3" xlink:to="loc_ifrs-full_CategoriesOfFinancialAssetsDomain_019b47d6-443b-724f-a556-7d0dd9b9ddb9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember_019b47d6-443b-7ced-bf1b-42d86025fc02" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CategoriesOfFinancialAssetsDomain_019b47d6-443b-724f-a556-7d0dd9b9ddb9" xlink:to="loc_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember_019b47d6-443b-7ced-bf1b-42d86025fc02" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019b47d6-443b-764e-ac2b-987facdfdee3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7774-99e0-f3bf72cb75ef" xlink:to="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019b47d6-443b-764e-ac2b-987facdfdee3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-443b-764e-ac2b-987facdfdee3_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019b47d6-443b-764e-ac2b-987facdfdee3" xlink:to="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-443b-764e-ac2b-987facdfdee3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-443b-79bd-9670-a5c3f398d5df" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019b47d6-443b-764e-ac2b-987facdfdee3" xlink:to="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-443b-79bd-9670-a5c3f398d5df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ForeignExchangeContractsMember_019b47d6-443b-7482-994c-cb7a83cce4f8" xlink:href="eqx-20251231.xsd#eqx_ForeignExchangeContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-443b-79bd-9670-a5c3f398d5df" xlink:to="loc_eqx_ForeignExchangeContractsMember_019b47d6-443b-7482-994c-cb7a83cce4f8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_OtherFinancialAssetsMember_019b47d6-443b-71ea-b47f-418b92f54494" xlink:href="eqx-20251231.xsd#eqx_OtherFinancialAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-443b-79bd-9670-a5c3f398d5df" xlink:to="loc_eqx_OtherFinancialAssetsMember_019b47d6-443b-71ea-b47f-418b92f54494" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialAssets_019b47d6-443b-734c-a3f0-0e248be998a5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7820-a212-c3b35c39b245" xlink:to="loc_ifrs-full_DerivativeFinancialAssets_019b47d6-443b-734c-a3f0-0e248be998a5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentDerivativeFinancialAssets_019b47d6-443b-72bd-9cfd-246945bb8059" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentDerivativeFinancialAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7820-a212-c3b35c39b245" xlink:to="loc_ifrs-full_CurrentDerivativeFinancialAssets_019b47d6-443b-72bd-9cfd-246945bb8059" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentDerivativeFinancialAssets_019b47d6-443b-7961-9418-4606435abf30" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentDerivativeFinancialAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7820-a212-c3b35c39b245" xlink:to="loc_ifrs-full_NoncurrentDerivativeFinancialAssets_019b47d6-443b-7961-9418-4606435abf30" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialAssets_019b47d6-443b-79d0-8d34-3c053ba66ff4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialAssets"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationaboutForeignExchangeContractsDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationaboutForeignExchangeContractsDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationaboutForeignExchangeContractsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7c33-9f98-729f49051a1b" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7bc7-b004-a8c4fe320faa" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7c33-9f98-729f49051a1b" xlink:to="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7bc7-b004-a8c4fe320faa" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CurrencyAxis_019b47d6-443b-7163-9d6b-3ef8120e0992" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CurrencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7bc7-b004-a8c4fe320faa" xlink:to="loc_srt_CurrencyAxis_019b47d6-443b-7163-9d6b-3ef8120e0992" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain_019b47d6-443b-7163-9d6b-3ef8120e0992_default" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_AllCurrenciesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CurrencyAxis_019b47d6-443b-7163-9d6b-3ef8120e0992" xlink:to="loc_currency_AllCurrenciesDomain_019b47d6-443b-7163-9d6b-3ef8120e0992_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain_019b47d6-443b-76a5-923c-d72420d4c86d" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_AllCurrenciesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CurrencyAxis_019b47d6-443b-7163-9d6b-3ef8120e0992" xlink:to="loc_currency_AllCurrenciesDomain_019b47d6-443b-76a5-923c-d72420d4c86d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CADMember_019b47d6-443b-77e4-9173-dae4e7649f87" xlink:href="eqx-20251231.xsd#eqx_CADMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_currency_AllCurrenciesDomain_019b47d6-443b-76a5-923c-d72420d4c86d" xlink:to="loc_eqx_CADMember_019b47d6-443b-77e4-9173-dae4e7649f87" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BrlMember_019b47d6-443b-7fa3-b465-dbd2ca84da77" xlink:href="eqx-20251231.xsd#eqx_BrlMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_currency_AllCurrenciesDomain_019b47d6-443b-76a5-923c-d72420d4c86d" xlink:to="loc_eqx_BrlMember_019b47d6-443b-7fa3-b465-dbd2ca84da77" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MXNMember_019b47d6-443b-721b-83e3-dd1bbf5eb038" xlink:href="eqx-20251231.xsd#eqx_MXNMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_currency_AllCurrenciesDomain_019b47d6-443b-76a5-923c-d72420d4c86d" xlink:to="loc_eqx_MXNMember_019b47d6-443b-721b-83e3-dd1bbf5eb038" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MaturityAxis_019b47d6-443b-71c8-8432-7f4309cb35e4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MaturityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7bc7-b004-a8c4fe320faa" xlink:to="loc_ifrs-full_MaturityAxis_019b47d6-443b-71c8-8432-7f4309cb35e4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MaturityDomain_019b47d6-443b-71c8-8432-7f4309cb35e4_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MaturityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_MaturityAxis_019b47d6-443b-71c8-8432-7f4309cb35e4" xlink:to="loc_ifrs-full_MaturityDomain_019b47d6-443b-71c8-8432-7f4309cb35e4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MaturityDomain_019b47d6-443b-7d26-8c5b-db2eaf326552" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MaturityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_MaturityAxis_019b47d6-443b-71c8-8432-7f4309cb35e4" xlink:to="loc_ifrs-full_MaturityDomain_019b47d6-443b-7d26-8c5b-db2eaf326552" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NotLaterThanOneYearMember_019b47d6-443b-72ca-b81f-df8ee11047a8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NotLaterThanOneYearMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_MaturityDomain_019b47d6-443b-7d26-8c5b-db2eaf326552" xlink:to="loc_ifrs-full_NotLaterThanOneYearMember_019b47d6-443b-72ca-b81f-df8ee11047a8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember_019b47d6-443b-73b1-94a9-74dcf5364d4b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_MaturityDomain_019b47d6-443b-7d26-8c5b-db2eaf326552" xlink:to="loc_ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember_019b47d6-443b-73b1-94a9-74dcf5364d4b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentAxis_019b47d6-443b-7fc0-a513-d746b7cab0fd" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7bc7-b004-a8c4fe320faa" xlink:to="loc_ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentAxis_019b47d6-443b-7fc0-a513-d746b7cab0fd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentDomain_019b47d6-443b-7fc0-a513-d746b7cab0fd_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentAxis_019b47d6-443b-7fc0-a513-d746b7cab0fd" xlink:to="loc_ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentDomain_019b47d6-443b-7fc0-a513-d746b7cab0fd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentDomain_019b47d6-443b-7c0a-9217-d23bbde45b88" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentAxis_019b47d6-443b-7fc0-a513-d746b7cab0fd" xlink:to="loc_ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentDomain_019b47d6-443b-7c0a-9217-d23bbde45b88" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchasedCallOptionsMember_019b47d6-443b-719b-96e9-23326fd34d41" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PurchasedCallOptionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentDomain_019b47d6-443b-7c0a-9217-d23bbde45b88" xlink:to="loc_ifrs-full_PurchasedCallOptionsMember_019b47d6-443b-719b-96e9-23326fd34d41" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_WrittenPutOptionsMember_019b47d6-443b-7993-893b-dc8129450d7f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WrittenPutOptionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentDomain_019b47d6-443b-7c0a-9217-d23bbde45b88" xlink:to="loc_ifrs-full_WrittenPutOptionsMember_019b47d6-443b-7993-893b-dc8129450d7f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NotionalAmount_019b47d6-443b-7d7c-9978-8a9502690d1b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7c33-9f98-729f49051a1b" xlink:to="loc_ifrs-full_NotionalAmount_019b47d6-443b-7d7c-9978-8a9502690d1b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_WeightedAverageCurrencyExchangeRate_019b47d6-443b-7ddd-b4c0-646a3afdd48c" xlink:href="eqx-20251231.xsd#eqx_WeightedAverageCurrencyExchangeRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7c33-9f98-729f49051a1b" xlink:to="loc_eqx_WeightedAverageCurrencyExchangeRate_019b47d6-443b-7ddd-b4c0-646a3afdd48c" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofChangesinForeignExchangeContractsOutstandingDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#DERIVATIVEFINANCIALINSTRUMENTSScheduleofChangesinForeignExchangeContractsOutstandingDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofChangesinForeignExchangeContractsOutstandingDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-786c-8189-ccb2f1ef9fc2" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7c6e-921c-4090f8b9b997" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-786c-8189-ccb2f1ef9fc2" xlink:to="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7c6e-921c-4090f8b9b997" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-7360-92b5-f79009bde215" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7c6e-921c-4090f8b9b997" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-7360-92b5-f79009bde215" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-7360-92b5-f79009bde215_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-7360-92b5-f79009bde215" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-7360-92b5-f79009bde215_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-7c17-a7a3-e08c6ee8ac2e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-7360-92b5-f79009bde215" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-7c17-a7a3-e08c6ee8ac2e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ForeignExchangeContractsMember_019b47d6-443b-7361-887f-064907fd5bea" xlink:href="eqx-20251231.xsd#eqx_ForeignExchangeContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-7c17-a7a3-e08c6ee8ac2e" xlink:to="loc_eqx_ForeignExchangeContractsMember_019b47d6-443b-7361-887f-064907fd5bea" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities_019b9d2f-0dd5-7e42-bb7b-e9870ade9138" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-786c-8189-ccb2f1ef9fc2" xlink:to="loc_ifrs-full_DerivativeFinancialLiabilities_019b9d2f-0dd5-7e42-bb7b-e9870ade9138" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialAssets_019b47d6-443b-72f1-9f1f-9fca3972e66b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-786c-8189-ccb2f1ef9fc2" xlink:to="loc_ifrs-full_DerivativeFinancialAssets_019b47d6-443b-72f1-9f1f-9fca3972e66b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_019b47d6-443b-7723-a0a4-4464776d465d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-786c-8189-ccb2f1ef9fc2" xlink:to="loc_ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_019b47d6-443b-7723-a0a4-4464776d465d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesRecognisedInProfitOrLossAttributableToChangeInUnrealisedGainsOrLossesForLiabilitiesHeldAtEndOfPeriodFairValueMeasurement_019b47d6-443b-741b-abb7-39aa27f85394" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesRecognisedInProfitOrLossAttributableToChangeInUnrealisedGainsOrLossesForLiabilitiesHeldAtEndOfPeriodFairValueMeasurement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-786c-8189-ccb2f1ef9fc2" xlink:to="loc_ifrs-full_GainsLossesRecognisedInProfitOrLossAttributableToChangeInUnrealisedGainsOrLossesForLiabilitiesHeldAtEndOfPeriodFairValueMeasurement_019b47d6-443b-741b-abb7-39aa27f85394" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities_019bf2fa-fdcf-7833-b885-7a201eb27b7f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialAssets_019b47d6-443b-71a8-a5b2-b91772daf4a4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialAssets"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofFairValueofOutstandingForeignExchangeContractsDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#DERIVATIVEFINANCIALINSTRUMENTSScheduleofFairValueofOutstandingForeignExchangeContractsDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofFairValueofOutstandingForeignExchangeContractsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7e35-87c6-d95b20cb2f3e" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7b48-a0e2-459c9cc41c26" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7e35-87c6-d95b20cb2f3e" xlink:to="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7b48-a0e2-459c9cc41c26" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019b47d6-443b-74eb-9d80-33de3d8795d5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7b48-a0e2-459c9cc41c26" xlink:to="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019b47d6-443b-74eb-9d80-33de3d8795d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-443b-74eb-9d80-33de3d8795d5_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019b47d6-443b-74eb-9d80-33de3d8795d5" xlink:to="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-443b-74eb-9d80-33de3d8795d5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-443b-7b09-88ec-32b202afa897" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019b47d6-443b-74eb-9d80-33de3d8795d5" xlink:to="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-443b-7b09-88ec-32b202afa897" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ForeignExchangeContractsMember_019b47d6-443b-7f58-be6b-07fa67069073" xlink:href="eqx-20251231.xsd#eqx_ForeignExchangeContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-443b-7b09-88ec-32b202afa897" xlink:to="loc_eqx_ForeignExchangeContractsMember_019b47d6-443b-7f58-be6b-07fa67069073" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-77ec-b5b5-d66a80dd64b0" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7b48-a0e2-459c9cc41c26" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-77ec-b5b5-d66a80dd64b0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-77ec-b5b5-d66a80dd64b0_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-77ec-b5b5-d66a80dd64b0" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-77ec-b5b5-d66a80dd64b0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-7096-9eda-33e655a68cda" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-77ec-b5b5-d66a80dd64b0" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-7096-9eda-33e655a68cda" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ForeignExchangeContractsMember_019b47d6-443b-7838-8588-b4759bf51689" xlink:href="eqx-20251231.xsd#eqx_ForeignExchangeContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-7096-9eda-33e655a68cda" xlink:to="loc_eqx_ForeignExchangeContractsMember_019b47d6-443b-7838-8588-b4759bf51689" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentDerivativeFinancialAssets_019b47d6-443b-7aa3-958d-50cb6f5c993b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentDerivativeFinancialAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7e35-87c6-d95b20cb2f3e" xlink:to="loc_ifrs-full_CurrentDerivativeFinancialAssets_019b47d6-443b-7aa3-958d-50cb6f5c993b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentDerivativeFinancialAssets_019b47d6-443b-7b5f-9806-a7c4ad2213a1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentDerivativeFinancialAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7e35-87c6-d95b20cb2f3e" xlink:to="loc_ifrs-full_NoncurrentDerivativeFinancialAssets_019b47d6-443b-7b5f-9806-a7c4ad2213a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentDerivativeFinancialLiabilities_019b47d6-443b-76fd-9031-940370c1d072" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentDerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7e35-87c6-d95b20cb2f3e" xlink:to="loc_ifrs-full_CurrentDerivativeFinancialLiabilities_019b47d6-443b-76fd-9031-940370c1d072" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentDerivativeFinancialLiabilities_019b47d6-443b-70dc-8508-49ca65e6895e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentDerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7e35-87c6-d95b20cb2f3e" xlink:to="loc_ifrs-full_NoncurrentDerivativeFinancialLiabilities_019b47d6-443b-70dc-8508-49ca65e6895e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialAssetsLiabilitiesNet_019b47d6-443b-741c-88be-73a14493fd4f" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialAssetsLiabilitiesNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7e35-87c6-d95b20cb2f3e" xlink:to="loc_eqx_DerivativeFinancialAssetsLiabilitiesNet_019b47d6-443b-741c-88be-73a14493fd4f" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationofDerivativeLiabilitiesDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationofDerivativeLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationofDerivativeLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7a50-b88a-06fbd2ae845f" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7e27-96da-00c471d9d683" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7a50-b88a-06fbd2ae845f" xlink:to="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7e27-96da-00c471d9d683" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-7d68-a520-e7daa3233265" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7e27-96da-00c471d9d683" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-7d68-a520-e7daa3233265" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-7d68-a520-e7daa3233265_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-7d68-a520-e7daa3233265" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-7d68-a520-e7daa3233265_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-719f-a5e2-51bb1c7bc6f7" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-7d68-a520-e7daa3233265" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-719f-a5e2-51bb1c7bc6f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ForeignExchangeContractsMember_019b47d6-443b-780e-abcf-61bfbd60a554" xlink:href="eqx-20251231.xsd#eqx_ForeignExchangeContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-719f-a5e2-51bb1c7bc6f7" xlink:to="loc_eqx_ForeignExchangeContractsMember_019b47d6-443b-780e-abcf-61bfbd60a554" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GoldContractMember_019b47d6-443b-7d08-b6f0-b64ae990fe4c" xlink:href="eqx-20251231.xsd#eqx_GoldContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-719f-a5e2-51bb1c7bc6f7" xlink:to="loc_eqx_GoldContractMember_019b47d6-443b-7d08-b6f0-b64ae990fe4c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContingentConsiderationMember_019b47d6-443b-7fb3-a4c1-c1c54d6878ac" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContingentConsiderationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-719f-a5e2-51bb1c7bc6f7" xlink:to="loc_ifrs-full_ContingentConsiderationMember_019b47d6-443b-7fb3-a4c1-c1c54d6878ac" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ConvertibleNotesMember_019b9d34-e016-72f5-b0c7-8d88f8a6f0a0" xlink:href="eqx-20251231.xsd#eqx_ConvertibleNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-719f-a5e2-51bb1c7bc6f7" xlink:to="loc_eqx_ConvertibleNotesMember_019b9d34-e016-72f5-b0c7-8d88f8a6f0a0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EquinoxGoldWarrantLiabilityMember_019b9d34-5db5-71ac-bdb6-c42e00fe6ce6" xlink:href="eqx-20251231.xsd#eqx_EquinoxGoldWarrantLiabilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-719f-a5e2-51bb1c7bc6f7" xlink:to="loc_eqx_EquinoxGoldWarrantLiabilityMember_019b9d34-5db5-71ac-bdb6-c42e00fe6ce6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_OtherDerivativeLiabilitiesMember_019b47d6-443b-71e8-9152-d34a0e0d674b" xlink:href="eqx-20251231.xsd#eqx_OtherDerivativeLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-719f-a5e2-51bb1c7bc6f7" xlink:to="loc_eqx_OtherDerivativeLiabilitiesMember_019b47d6-443b-71e8-9152-d34a0e0d674b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019b47d6-443b-7b42-af9b-69fbee5a80a4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7e27-96da-00c471d9d683" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019b47d6-443b-7b42-af9b-69fbee5a80a4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b47d6-443b-7b42-af9b-69fbee5a80a4_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b47d6-443b-7b42-af9b-69fbee5a80a4" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b47d6-443b-7b42-af9b-69fbee5a80a4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b47d6-443b-70f4-8ddb-e0e11858fe23" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b47d6-443b-7b42-af9b-69fbee5a80a4" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b47d6-443b-70f4-8ddb-e0e11858fe23" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-443b-735c-b0bc-802e71ee75d5" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b47d6-443b-70f4-8ddb-e0e11858fe23" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-443b-735c-b0bc-802e71ee75d5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities_019b47d6-443b-703c-932c-3391a4da6dfd" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7a50-b88a-06fbd2ae845f" xlink:to="loc_ifrs-full_DerivativeFinancialLiabilities_019b47d6-443b-703c-932c-3391a4da6dfd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentDerivativeFinancialLiabilities_019b47d6-443b-7812-9aee-adf71f728f42" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentDerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7a50-b88a-06fbd2ae845f" xlink:to="loc_ifrs-full_CurrentDerivativeFinancialLiabilities_019b47d6-443b-7812-9aee-adf71f728f42" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentDerivativeFinancialLiabilities_019b47d6-443b-78fb-b4e7-33f22f724bf1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentDerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7a50-b88a-06fbd2ae845f" xlink:to="loc_ifrs-full_NoncurrentDerivativeFinancialLiabilities_019b47d6-443b-78fb-b4e7-33f22f724bf1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities_019b47d6-443b-785d-b257-5322237ba8f6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSDerivativeLiabilitiesAdditionalInformationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#DERIVATIVEFINANCIALINSTRUMENTSDerivativeLiabilitiesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSDerivativeLiabilitiesAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d9d-bae6-701a-8d42-da187b8a7011" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7a84-bca5-3b6d155ee054" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d9d-bae6-701a-8d42-da187b8a7011" xlink:to="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7a84-bca5-3b6d155ee054" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AveragePriceDetailsAxis_019b9d9d-bae6-74d9-a5dc-5925ea5ca354" xlink:href="eqx-20251231.xsd#eqx_AveragePriceDetailsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7a84-bca5-3b6d155ee054" xlink:to="loc_eqx_AveragePriceDetailsAxis_019b9d9d-bae6-74d9-a5dc-5925ea5ca354" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AveragePriceDetailsDomain_019b9d9d-bae6-74d9-a5dc-5925ea5ca354_default" xlink:href="eqx-20251231.xsd#eqx_AveragePriceDetailsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_eqx_AveragePriceDetailsAxis_019b9d9d-bae6-74d9-a5dc-5925ea5ca354" xlink:to="loc_eqx_AveragePriceDetailsDomain_019b9d9d-bae6-74d9-a5dc-5925ea5ca354_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AveragePriceDetailsDomain_019b9d9d-bae6-7b2d-bb3b-f8859bf50289" xlink:href="eqx-20251231.xsd#eqx_AveragePriceDetailsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_eqx_AveragePriceDetailsAxis_019b9d9d-bae6-74d9-a5dc-5925ea5ca354" xlink:to="loc_eqx_AveragePriceDetailsDomain_019b9d9d-bae6-7b2d-bb3b-f8859bf50289" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PutOptionStrikePriceMember_019b9d9d-bae6-74ff-8dc0-d5c956fceff9" xlink:href="eqx-20251231.xsd#eqx_PutOptionStrikePriceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_AveragePriceDetailsDomain_019b9d9d-bae6-7b2d-bb3b-f8859bf50289" xlink:to="loc_eqx_PutOptionStrikePriceMember_019b9d9d-bae6-74ff-8dc0-d5c956fceff9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CallOptionStrikePriceMember_019b9d9d-bae6-7691-993f-3384f189765d" xlink:href="eqx-20251231.xsd#eqx_CallOptionStrikePriceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_AveragePriceDetailsDomain_019b9d9d-bae6-7b2d-bb3b-f8859bf50289" xlink:to="loc_eqx_CallOptionStrikePriceMember_019b9d9d-bae6-7691-993f-3384f189765d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SpotPriceMember_019b9d9d-bae6-7366-ad8b-efcb5d59d5e6" xlink:href="eqx-20251231.xsd#eqx_SpotPriceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_AveragePriceDetailsDomain_019b9d9d-bae6-7b2d-bb3b-f8859bf50289" xlink:to="loc_eqx_SpotPriceMember_019b9d9d-bae6-7366-ad8b-efcb5d59d5e6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_WeightedAverageMember_019b9d9d-bae6-7620-bdfb-25bf2123eea4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_AveragePriceDetailsDomain_019b9d9d-bae6-7b2d-bb3b-f8859bf50289" xlink:to="loc_ifrs-full_WeightedAverageMember_019b9d9d-bae6-7620-bdfb-25bf2123eea4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d9d-bae6-7815-b00f-1f61bbe20292" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7a84-bca5-3b6d155ee054" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d9d-bae6-7815-b00f-1f61bbe20292" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d9d-bae6-7815-b00f-1f61bbe20292_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d9d-bae6-7815-b00f-1f61bbe20292" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d9d-bae6-7815-b00f-1f61bbe20292_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d9d-bae6-7f1f-aad6-c31b4eff99d2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d9d-bae6-7815-b00f-1f61bbe20292" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d9d-bae6-7f1f-aad6-c31b4eff99d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GoldCollarsMember_019b9d9d-bae6-74df-9c71-7500fc4efc3e" xlink:href="eqx-20251231.xsd#eqx_GoldCollarsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d9d-bae6-7f1f-aad6-c31b4eff99d2" xlink:to="loc_eqx_GoldCollarsMember_019b9d9d-bae6-74df-9c71-7500fc4efc3e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfLiabilitiesAxis_019b9d9d-bae6-7602-9fe5-b2205929fbfa" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfLiabilitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7a84-bca5-3b6d155ee054" xlink:to="loc_ifrs-full_ClassesOfLiabilitiesAxis_019b9d9d-bae6-7602-9fe5-b2205929fbfa" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfLiabilitiesDomain_019b9d9d-bae6-7602-9fe5-b2205929fbfa_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfLiabilitiesAxis_019b9d9d-bae6-7602-9fe5-b2205929fbfa" xlink:to="loc_ifrs-full_ClassesOfLiabilitiesDomain_019b9d9d-bae6-7602-9fe5-b2205929fbfa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfLiabilitiesDomain_019b9d9d-bae6-705b-bbe5-d5abf90039f5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfLiabilitiesAxis_019b9d9d-bae6-7602-9fe5-b2205929fbfa" xlink:to="loc_ifrs-full_ClassesOfLiabilitiesDomain_019b9d9d-bae6-705b-bbe5-d5abf90039f5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GoldContractMember_019b9d9d-bae6-7414-828e-89b18cf6aeb2" xlink:href="eqx-20251231.xsd#eqx_GoldContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfLiabilitiesDomain_019b9d9d-bae6-705b-bbe5-d5abf90039f5" xlink:to="loc_eqx_GoldContractMember_019b9d9d-bae6-7414-828e-89b18cf6aeb2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AssetAcquisition1Axis_019b9d9d-fbf6-73c8-bc87-2cd1f4d46a76" xlink:href="eqx-20251231.xsd#eqx_AssetAcquisition1Axis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7a84-bca5-3b6d155ee054" xlink:to="loc_eqx_AssetAcquisition1Axis_019b9d9d-fbf6-73c8-bc87-2cd1f4d46a76" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AssetAcquisition1Domain_019b9d9d-fbf6-73c8-bc87-2cd1f4d46a76_default" xlink:href="eqx-20251231.xsd#eqx_AssetAcquisition1Domain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_eqx_AssetAcquisition1Axis_019b9d9d-fbf6-73c8-bc87-2cd1f4d46a76" xlink:to="loc_eqx_AssetAcquisition1Domain_019b9d9d-fbf6-73c8-bc87-2cd1f4d46a76_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AssetAcquisition1Domain_019b9d9d-fbf6-7b2d-863c-fbd2ce54e1f8" xlink:href="eqx-20251231.xsd#eqx_AssetAcquisition1Domain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_eqx_AssetAcquisition1Axis_019b9d9d-fbf6-73c8-bc87-2cd1f4d46a76" xlink:to="loc_eqx_AssetAcquisition1Domain_019b9d9d-fbf6-7b2d-863c-fbd2ce54e1f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019b9d9d-fbf6-7f78-9084-0f1ab3f2daea" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_AssetAcquisition1Domain_019b9d9d-fbf6-7b2d-863c-fbd2ce54e1f8" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019b9d9d-fbf6-7f78-9084-0f1ab3f2daea" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AveragePriceOfHedgingInstrument_019b9d9d-bae6-7a1a-b39c-2a6153629f8f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AveragePriceOfHedgingInstrument"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d9d-bae6-701a-8d42-da187b8a7011" xlink:to="loc_ifrs-full_AveragePriceOfHedgingInstrument_019b9d9d-bae6-7a1a-b39c-2a6153629f8f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeHedgingInstrumentTotalNotionalQuantity_019b9d9d-bae6-7e87-b0eb-f771fcea6f21" xlink:href="eqx-20251231.xsd#eqx_DerivativeHedgingInstrumentTotalNotionalQuantity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d9d-bae6-701a-8d42-da187b8a7011" xlink:to="loc_eqx_DerivativeHedgingInstrumentTotalNotionalQuantity_019b9d9d-bae6-7e87-b0eb-f771fcea6f21" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeOuncesRemainingToBeDelivered_019b9d9d-bae6-7fec-b932-391517126248" xlink:href="eqx-20251231.xsd#eqx_DerivativeOuncesRemainingToBeDelivered"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d9d-bae6-701a-8d42-da187b8a7011" xlink:to="loc_eqx_DerivativeOuncesRemainingToBeDelivered_019b9d9d-bae6-7fec-b932-391517126248" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeTransactionFixedPriceBasisOfPerOunce_019b9d9d-bae6-7ace-917d-f688e3083ae7" xlink:href="eqx-20251231.xsd#eqx_DerivativeTransactionFixedPriceBasisOfPerOunce"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d9d-bae6-701a-8d42-da187b8a7011" xlink:to="loc_eqx_DerivativeTransactionFixedPriceBasisOfPerOunce_019b9d9d-bae6-7ace-917d-f688e3083ae7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AdditionalProportionOfOwnershipInterestInSubsidiary_019b9d9d-fbf6-77dd-990c-7c7e61677894" xlink:href="eqx-20251231.xsd#eqx_AdditionalProportionOfOwnershipInterestInSubsidiary"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d9d-bae6-701a-8d42-da187b8a7011" xlink:to="loc_eqx_AdditionalProportionOfOwnershipInterestInSubsidiary_019b9d9d-fbf6-77dd-990c-7c7e61677894" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContingentConsiderationMassOfRefinedGoldDelivered_019b9d9d-fbf6-710a-9c5e-6cc172c18a22" xlink:href="eqx-20251231.xsd#eqx_ContingentConsiderationMassOfRefinedGoldDelivered"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d9d-bae6-701a-8d42-da187b8a7011" xlink:to="loc_eqx_ContingentConsiderationMassOfRefinedGoldDelivered_019b9d9d-fbf6-710a-9c5e-6cc172c18a22" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContingentConsiderationMassOfRefinedGoldDeliveredMilestoneOne_019b9d9d-fbf6-713b-b6c6-2d0eee644f1b" xlink:href="eqx-20251231.xsd#eqx_ContingentConsiderationMassOfRefinedGoldDeliveredMilestoneOne"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d9d-bae6-701a-8d42-da187b8a7011" xlink:to="loc_eqx_ContingentConsiderationMassOfRefinedGoldDeliveredMilestoneOne_019b9d9d-fbf6-713b-b6c6-2d0eee644f1b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContingentConsiderationMassOfRefinedGoldDeliveredMilestoneTwo_019b9d9d-fbf6-7db9-8d07-c78d07f29ef5" xlink:href="eqx-20251231.xsd#eqx_ContingentConsiderationMassOfRefinedGoldDeliveredMilestoneTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d9d-bae6-701a-8d42-da187b8a7011" xlink:to="loc_eqx_ContingentConsiderationMassOfRefinedGoldDeliveredMilestoneTwo_019b9d9d-fbf6-7db9-8d07-c78d07f29ef5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContingentConsiderationMassOfRefinedGoldDeliveredMilestoneThree_019b9d9d-fbf6-7efb-99c1-a905ef917641" xlink:href="eqx-20251231.xsd#eqx_ContingentConsiderationMassOfRefinedGoldDeliveredMilestoneThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d9d-bae6-701a-8d42-da187b8a7011" xlink:to="loc_eqx_ContingentConsiderationMassOfRefinedGoldDeliveredMilestoneThree_019b9d9d-fbf6-7efb-99c1-a905ef917641" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContingentConsiderationGoldOuncesDeliverableLimitTotal_019b9d9d-fbf6-7ffd-90b6-5276d064b9e0" xlink:href="eqx-20251231.xsd#eqx_ContingentConsiderationGoldOuncesDeliverableLimitTotal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d9d-bae6-701a-8d42-da187b8a7011" xlink:to="loc_eqx_ContingentConsiderationGoldOuncesDeliverableLimitTotal_019b9d9d-fbf6-7ffd-90b6-5276d064b9e0" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContingentConsiderationPaymentToCounterpartyInCash_019b9d9d-fbf6-769b-8ca0-2ae6a2e2275e" xlink:href="eqx-20251231.xsd#eqx_ContingentConsiderationPaymentToCounterpartyInCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d9d-bae6-701a-8d42-da187b8a7011" xlink:to="loc_eqx_ContingentConsiderationPaymentToCounterpartyInCash_019b9d9d-fbf6-769b-8ca0-2ae6a2e2275e" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleoftheChangesinGoldCollarandForwardContractsOutstandingDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#DERIVATIVEFINANCIALINSTRUMENTSScheduleoftheChangesinGoldCollarandForwardContractsOutstandingDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleoftheChangesinGoldCollarandForwardContractsOutstandingDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-78c6-aa0c-25a78a3cfcdd" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7b3b-a081-587917d97ea0" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-78c6-aa0c-25a78a3cfcdd" xlink:to="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7b3b-a081-587917d97ea0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-7d3c-b28c-f95b0d8c2af2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7b3b-a081-587917d97ea0" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-7d3c-b28c-f95b0d8c2af2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-7d3c-b28c-f95b0d8c2af2_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-7d3c-b28c-f95b0d8c2af2" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-7d3c-b28c-f95b0d8c2af2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-7024-b2d4-6b7ee8288cb3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-7d3c-b28c-f95b0d8c2af2" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-7024-b2d4-6b7ee8288cb3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GoldCollarsAndForwardContractsMember_019b47d6-443b-70db-99fe-3a1d8567a5db" xlink:href="eqx-20251231.xsd#eqx_GoldCollarsAndForwardContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-7024-b2d4-6b7ee8288cb3" xlink:to="loc_eqx_GoldCollarsAndForwardContractsMember_019b47d6-443b-70db-99fe-3a1d8567a5db" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities_019b47d6-443b-7e8d-9d5b-80277fe14203" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-78c6-aa0c-25a78a3cfcdd" xlink:to="loc_ifrs-full_DerivativeFinancialLiabilities_019b47d6-443b-7e8d-9d5b-80277fe14203" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesRecognisedInProfitOrLossAttributableToChangeInUnrealisedGainsOrLossesForLiabilitiesHeldAtEndOfPeriodFairValueMeasurement_019b47d6-443b-71b8-9e0e-de223d352c3d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesRecognisedInProfitOrLossAttributableToChangeInUnrealisedGainsOrLossesForLiabilitiesHeldAtEndOfPeriodFairValueMeasurement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-78c6-aa0c-25a78a3cfcdd" xlink:to="loc_ifrs-full_GainsLossesRecognisedInProfitOrLossAttributableToChangeInUnrealisedGainsOrLossesForLiabilitiesHeldAtEndOfPeriodFairValueMeasurement_019b47d6-443b-71b8-9e0e-de223d352c3d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_019b47d6-443b-79bc-aca8-0382eb7de72b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-78c6-aa0c-25a78a3cfcdd" xlink:to="loc_ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_019b47d6-443b-79bc-aca8-0382eb7de72b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities_019b47d6-443b-7db0-8933-a60e41027c79" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofFairValueofOutstandingGoldContractsDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#DERIVATIVEFINANCIALINSTRUMENTSScheduleofFairValueofOutstandingGoldContractsDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofFairValueofOutstandingGoldContractsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7161-a25d-22535a39aae0" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7cd4-a0b1-f43b5c8aa00d" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7161-a25d-22535a39aae0" xlink:to="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7cd4-a0b1-f43b5c8aa00d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-7d3b-b03a-8888ca57b104" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b47d6-443b-7cd4-a0b1-f43b5c8aa00d" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-7d3b-b03a-8888ca57b104" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-7d3b-b03a-8888ca57b104_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-7d3b-b03a-8888ca57b104" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-7d3b-b03a-8888ca57b104_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-75a5-ae7d-c7efbda04c0d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-443b-7d3b-b03a-8888ca57b104" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-75a5-ae7d-c7efbda04c0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GoldCollarsAndForwardContractsMember_019b47d6-443b-777b-ba46-ac63945abe01" xlink:href="eqx-20251231.xsd#eqx_GoldCollarsAndForwardContractsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-443b-75a5-ae7d-c7efbda04c0d" xlink:to="loc_eqx_GoldCollarsAndForwardContractsMember_019b47d6-443b-777b-ba46-ac63945abe01" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentDerivativeFinancialLiabilities_019b47d6-443b-7d21-a913-77499e92eae8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentDerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7161-a25d-22535a39aae0" xlink:to="loc_ifrs-full_CurrentDerivativeFinancialLiabilities_019b47d6-443b-7d21-a913-77499e92eae8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentDerivativeFinancialLiabilities_019b47d6-443b-786f-84d3-f65a1d1b7607" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentDerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7161-a25d-22535a39aae0" xlink:to="loc_ifrs-full_NoncurrentDerivativeFinancialLiabilities_019b47d6-443b-786f-84d3-f65a1d1b7607" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities_019b47d6-443b-708f-bba1-24bfb9457477" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b47d6-443b-7161-a25d-22535a39aae0" xlink:to="loc_ifrs-full_DerivativeFinancialLiabilities_019b47d6-443b-708f-bba1-24bfb9457477" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationGoldContractsDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationGoldContractsDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationGoldContractsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d86-aa20-7551-bad4-0e93e6cb8d2e" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d86-aa20-7ddb-9d5c-4d1568692c35" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d86-aa20-7551-bad4-0e93e6cb8d2e" xlink:to="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d86-aa20-7ddb-9d5c-4d1568692c35" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019b9d86-aa20-7b18-84a5-1c9860058843" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d86-aa20-7ddb-9d5c-4d1568692c35" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019b9d86-aa20-7b18-84a5-1c9860058843" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9d86-aa20-7b18-84a5-1c9860058843_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9d86-aa20-7b18-84a5-1c9860058843" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9d86-aa20-7b18-84a5-1c9860058843_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9d86-aa20-7ef9-a1c9-eb89034b7170" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9d86-aa20-7b18-84a5-1c9860058843" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9d86-aa20-7ef9-a1c9-eb89034b7170" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019b9d86-aa20-7a7c-b541-aa2cd565feaa" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b9d86-aa20-7ef9-a1c9-eb89034b7170" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019b9d86-aa20-7a7c-b541-aa2cd565feaa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d86-aa20-7f22-ace9-6e4b76358c67" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d86-aa20-7ddb-9d5c-4d1568692c35" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d86-aa20-7f22-ace9-6e4b76358c67" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d86-aa20-7f22-ace9-6e4b76358c67_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d86-aa20-7f22-ace9-6e4b76358c67" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d86-aa20-7f22-ace9-6e4b76358c67_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d86-aa20-71f8-bea9-e9f7f6d3b66b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d86-aa20-7f22-ace9-6e4b76358c67" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d86-aa20-71f8-bea9-e9f7f6d3b66b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContingentLiabilitiesMember_019b9d86-aa20-7985-9685-fe507d38a35b" xlink:href="eqx-20251231.xsd#eqx_ContingentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d86-aa20-71f8-bea9-e9f7f6d3b66b" xlink:to="loc_eqx_ContingentLiabilitiesMember_019b9d86-aa20-7985-9685-fe507d38a35b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities_019b9d86-aa20-71a5-8814-2a52a0fa3a63" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d86-aa20-7551-bad4-0e93e6cb8d2e" xlink:to="loc_ifrs-full_DerivativeFinancialLiabilities_019b9d86-aa20-71a5-8814-2a52a0fa3a63" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AssumedOnAcquisitionDerivativeFinancialLiabilities_019b9d86-aa20-768f-88ba-1d3757d3e50d" xlink:href="eqx-20251231.xsd#eqx_AssumedOnAcquisitionDerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d86-aa20-7551-bad4-0e93e6cb8d2e" xlink:to="loc_eqx_AssumedOnAcquisitionDerivativeFinancialLiabilities_019b9d86-aa20-768f-88ba-1d3757d3e50d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesRecognisedInProfitOrLossAttributableToChangeInUnrealisedGainsOrLossesForLiabilitiesHeldAtEndOfPeriodFairValueMeasurement_019b9d86-aa20-7470-98b3-d8e118fea2f8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesRecognisedInProfitOrLossAttributableToChangeInUnrealisedGainsOrLossesForLiabilitiesHeldAtEndOfPeriodFairValueMeasurement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d86-aa20-7551-bad4-0e93e6cb8d2e" xlink:to="loc_ifrs-full_GainsLossesRecognisedInProfitOrLossAttributableToChangeInUnrealisedGainsOrLossesForLiabilitiesHeldAtEndOfPeriodFairValueMeasurement_019b9d86-aa20-7470-98b3-d8e118fea2f8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities_019b9d87-036e-7e37-8eb1-c5b6f1ba8d69" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_019b9d86-aa20-706f-803e-a44fcf1ca38b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d86-aa20-7551-bad4-0e93e6cb8d2e" xlink:to="loc_ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_019b9d86-aa20-706f-803e-a44fcf1ca38b" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationGreenstoneContingentConsiderationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationGreenstoneContingentConsiderationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationGreenstoneContingentConsiderationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d87-f0b9-73cb-85e5-a113be840897" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d87-f0b9-7bd6-a3c2-f6ce768509ac" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d87-f0b9-73cb-85e5-a113be840897" xlink:to="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d87-f0b9-7bd6-a3c2-f6ce768509ac" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019b9d87-f0b9-7fad-9528-0167b2944d90" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d87-f0b9-7bd6-a3c2-f6ce768509ac" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019b9d87-f0b9-7fad-9528-0167b2944d90" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9d87-f0b9-7fad-9528-0167b2944d90_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9d87-f0b9-7fad-9528-0167b2944d90" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9d87-f0b9-7fad-9528-0167b2944d90_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9d87-f0b9-7948-9981-ee84727b309b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9d87-f0b9-7fad-9528-0167b2944d90" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9d87-f0b9-7948-9981-ee84727b309b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019b9d87-f0b9-75d0-a11c-9f0ec2081270" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b9d87-f0b9-7948-9981-ee84727b309b" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019b9d87-f0b9-75d0-a11c-9f0ec2081270" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d87-f0b9-70ad-90c6-0f61891eebdd" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d87-f0b9-7bd6-a3c2-f6ce768509ac" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d87-f0b9-70ad-90c6-0f61891eebdd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d87-f0b9-70ad-90c6-0f61891eebdd_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d87-f0b9-70ad-90c6-0f61891eebdd" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d87-f0b9-70ad-90c6-0f61891eebdd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d87-f0b9-7c72-8342-c03d665a32a5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d87-f0b9-70ad-90c6-0f61891eebdd" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d87-f0b9-7c72-8342-c03d665a32a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContingentLiabilitiesMember_019b9d87-f0b9-7b42-aff9-0a6c860278db" xlink:href="eqx-20251231.xsd#eqx_ContingentLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d87-f0b9-7c72-8342-c03d665a32a5" xlink:to="loc_eqx_ContingentLiabilitiesMember_019b9d87-f0b9-7b42-aff9-0a6c860278db" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentDerivativeFinancialLiabilities_019b9d87-f0b9-7672-9311-c685147978d6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentDerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d87-f0b9-73cb-85e5-a113be840897" xlink:to="loc_ifrs-full_CurrentDerivativeFinancialLiabilities_019b9d87-f0b9-7672-9311-c685147978d6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentDerivativeFinancialLiabilities_019b9d87-f0b9-7a14-a0ab-0e25306892e4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentDerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d87-f0b9-73cb-85e5-a113be840897" xlink:to="loc_ifrs-full_NoncurrentDerivativeFinancialLiabilities_019b9d87-f0b9-7a14-a0ab-0e25306892e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities_019b9d87-f0b9-76c2-9309-5df835ca5478" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d87-f0b9-73cb-85e5-a113be840897" xlink:to="loc_ifrs-full_DerivativeFinancialLiabilities_019b9d87-f0b9-76c2-9309-5df835ca5478" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationConvertibleNotesconversionoptionDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationConvertibleNotesconversionoptionDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationConvertibleNotesconversionoptionDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d88-7981-7d4f-b66f-05e5951d4996" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d88-7981-7ad5-b0e3-30082e8138f1" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d88-7981-7d4f-b66f-05e5951d4996" xlink:to="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d88-7981-7ad5-b0e3-30082e8138f1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d88-7981-7dce-a778-bbaa7bbd77e6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d88-7981-7ad5-b0e3-30082e8138f1" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d88-7981-7dce-a778-bbaa7bbd77e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d88-7981-7dce-a778-bbaa7bbd77e6_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d88-7981-7dce-a778-bbaa7bbd77e6" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d88-7981-7dce-a778-bbaa7bbd77e6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d88-7981-7798-b1d2-633b2498c17a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d88-7981-7dce-a778-bbaa7bbd77e6" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d88-7981-7798-b1d2-633b2498c17a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ConvertibleNotesConversionOptionMember_019b9d88-7981-7957-a6a1-3141e9816634" xlink:href="eqx-20251231.xsd#eqx_ConvertibleNotesConversionOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d88-7981-7798-b1d2-633b2498c17a" xlink:to="loc_eqx_ConvertibleNotesConversionOptionMember_019b9d88-7981-7957-a6a1-3141e9816634" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019b9d88-7981-7cb1-afd6-bff20c60e9ab" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d88-7981-7ad5-b0e3-30082e8138f1" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019b9d88-7981-7cb1-afd6-bff20c60e9ab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9d88-7981-7cb1-afd6-bff20c60e9ab_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9d88-7981-7cb1-afd6-bff20c60e9ab" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9d88-7981-7cb1-afd6-bff20c60e9ab_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9d88-7981-7e3c-9ca3-ab1966fc62b9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9d88-7981-7cb1-afd6-bff20c60e9ab" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9d88-7981-7e3c-9ca3-ab1966fc62b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CalibreAcquisitionMember_019b9d88-7981-7d77-b083-8532dcd37672" xlink:href="eqx-20251231.xsd#eqx_CalibreAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b9d88-7981-7e3c-9ca3-ab1966fc62b9" xlink:to="loc_eqx_CalibreAcquisitionMember_019b9d88-7981-7d77-b083-8532dcd37672" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities_019b9d88-7981-7f9b-9728-063f21fc2afa" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d88-7981-7d4f-b66f-05e5951d4996" xlink:to="loc_ifrs-full_DerivativeFinancialLiabilities_019b9d88-7981-7f9b-9728-063f21fc2afa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AssumedOnAcquisitionDerivativeFinancialLiabilities_019b9d88-7981-7a8f-90ac-926e60b81ac9" xlink:href="eqx-20251231.xsd#eqx_AssumedOnAcquisitionDerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d88-7981-7d4f-b66f-05e5951d4996" xlink:to="loc_eqx_AssumedOnAcquisitionDerivativeFinancialLiabilities_019b9d88-7981-7a8f-90ac-926e60b81ac9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_019b9d88-7981-789e-a0b8-2935e8dc9925" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d88-7981-7d4f-b66f-05e5951d4996" xlink:to="loc_ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_019b9d88-7981-789e-a0b8-2935e8dc9925" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities_019b9d89-d4ca-76ba-84c4-fe16c6c46e58" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationEquinoxGoldwarrantliabilityDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationEquinoxGoldwarrantliabilityDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationEquinoxGoldwarrantliabilityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d8a-a072-7004-b3ba-d2aec860bca0" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d8a-a072-7f06-a4f9-93d798e1343c" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d8a-a072-7004-b3ba-d2aec860bca0" xlink:to="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d8a-a072-7f06-a4f9-93d798e1343c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b9d8a-a072-7bb2-8ac1-e0a13ec0374b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d8a-a072-7f06-a4f9-93d798e1343c" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b9d8a-a072-7bb2-8ac1-e0a13ec0374b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b9d8a-a072-7bb2-8ac1-e0a13ec0374b_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b9d8a-a072-7bb2-8ac1-e0a13ec0374b" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b9d8a-a072-7bb2-8ac1-e0a13ec0374b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b9d8a-a072-752b-a338-dfd0c54cbb4b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b9d8a-a072-7bb2-8ac1-e0a13ec0374b" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b9d8a-a072-752b-a338-dfd0c54cbb4b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EquinoxGoldWarrantLiabilityMember_019b9d8a-a072-7055-a978-ba74570fe9b0" xlink:href="eqx-20251231.xsd#eqx_EquinoxGoldWarrantLiabilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b9d8a-a072-752b-a338-dfd0c54cbb4b" xlink:to="loc_eqx_EquinoxGoldWarrantLiabilityMember_019b9d8a-a072-7055-a978-ba74570fe9b0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_019b9d8f-6b61-7109-9cdc-afc163151fa2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d8a-a072-7004-b3ba-d2aec860bca0" xlink:to="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_019b9d8f-6b61-7109-9cdc-afc163151fa2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NumberOfOtherEquityInstrumentsAssumedInAcquisationShareBasedPaymentArrangement_019b9d8a-a072-7c57-bb3a-b7363cb8aff5" xlink:href="eqx-20251231.xsd#eqx_NumberOfOtherEquityInstrumentsAssumedInAcquisationShareBasedPaymentArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d8a-a072-7004-b3ba-d2aec860bca0" xlink:to="loc_eqx_NumberOfOtherEquityInstrumentsAssumedInAcquisationShareBasedPaymentArrangement_019b9d8a-a072-7c57-bb3a-b7363cb8aff5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_019b9d8a-a072-7634-ba4c-55b5b9913905" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d8a-a072-7004-b3ba-d2aec860bca0" xlink:to="loc_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_019b9d8a-a072-7634-ba4c-55b5b9913905" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_019b9d8e-6118-77cc-993f-cb46942aaba6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement2019_019b9d8f-b8c2-793b-8a9e-8dcd8e5b620b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement2019"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d8a-a072-7004-b3ba-d2aec860bca0" xlink:to="loc_ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement2019_019b9d8f-b8c2-793b-8a9e-8dcd8e5b620b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_WeightedAverageExercisePriceOfOtherEquityInstrumentsAssumedInAcquisitionShareBasedPaymentArrangement_019b9d8a-a072-7fa4-a07f-16a5391bfcff" xlink:href="eqx-20251231.xsd#eqx_WeightedAverageExercisePriceOfOtherEquityInstrumentsAssumedInAcquisitionShareBasedPaymentArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d8a-a072-7004-b3ba-d2aec860bca0" xlink:to="loc_eqx_WeightedAverageExercisePriceOfOtherEquityInstrumentsAssumedInAcquisitionShareBasedPaymentArrangement_019b9d8a-a072-7fa4-a07f-16a5391bfcff" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement2019_019bfed9-242e-7429-818b-5d5d68a36d88" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement2019"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d8a-a072-7004-b3ba-d2aec860bca0" xlink:to="loc_ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement2019_019bfed9-242e-7429-818b-5d5d68a36d88" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement2019_019b9d8f-da99-77c9-82de-bf55f77cf0dc" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement2019"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationEquinoxGoldwarrantliabilityDetails_1" xlink:type="simple" xlink:href="eqx-20251231.xsd#DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationEquinoxGoldwarrantliabilityDetails_1"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/DERIVATIVEFINANCIALINSTRUMENTSScheduleofDetailedInformationEquinoxGoldwarrantliabilityDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d91-2e45-7847-a420-914272096067" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d91-2e45-73c9-b7a0-ddc1dcd9cdf3" xlink:href="eqx-20251231.xsd#eqx_DerivativeFinancialInstrumentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d91-2e45-7847-a420-914272096067" xlink:to="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d91-2e45-73c9-b7a0-ddc1dcd9cdf3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d91-2e45-73e8-b2d5-ba3a946cf0a9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d91-2e45-73c9-b7a0-ddc1dcd9cdf3" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d91-2e45-73e8-b2d5-ba3a946cf0a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d91-2e45-73e8-b2d5-ba3a946cf0a9_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d91-2e45-73e8-b2d5-ba3a946cf0a9" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d91-2e45-73e8-b2d5-ba3a946cf0a9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d91-2e45-72e3-8535-22edca3da9af" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b9d91-2e45-73e8-b2d5-ba3a946cf0a9" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d91-2e45-72e3-8535-22edca3da9af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EquinoxGoldWarrantLiabilityMember_019b9d91-2e45-7e24-8660-28219599c629" xlink:href="eqx-20251231.xsd#eqx_EquinoxGoldWarrantLiabilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b9d91-2e45-72e3-8535-22edca3da9af" xlink:to="loc_eqx_EquinoxGoldWarrantLiabilityMember_019b9d91-2e45-7e24-8660-28219599c629" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019b9d91-2e45-7b07-aae5-d0ebe74e0810" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DerivativeFinancialInstrumentsTable_019b9d91-2e45-73c9-b7a0-ddc1dcd9cdf3" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019b9d91-2e45-7b07-aae5-d0ebe74e0810" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9d91-2e45-7b07-aae5-d0ebe74e0810_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9d91-2e45-7b07-aae5-d0ebe74e0810" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9d91-2e45-7b07-aae5-d0ebe74e0810_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9d91-2e45-7091-9d81-4011c9de0d2a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9d91-2e45-7b07-aae5-d0ebe74e0810" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9d91-2e45-7091-9d81-4011c9de0d2a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CalibreAcquisitionMember_019b9d91-2e45-70d4-9fe0-367a2ee62f8b" xlink:href="eqx-20251231.xsd#eqx_CalibreAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b9d91-2e45-7091-9d81-4011c9de0d2a" xlink:to="loc_eqx_CalibreAcquisitionMember_019b9d91-2e45-70d4-9fe0-367a2ee62f8b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities_019b9d92-04c1-7519-9ce6-aefd52aea2b9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d91-2e45-7847-a420-914272096067" xlink:to="loc_ifrs-full_DerivativeFinancialLiabilities_019b9d92-04c1-7519-9ce6-aefd52aea2b9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AssumedOnAcquisitionDerivativeFinancialLiabilities_019b9d91-2e45-7763-b134-f6352791cc4e" xlink:href="eqx-20251231.xsd#eqx_AssumedOnAcquisitionDerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d91-2e45-7847-a420-914272096067" xlink:to="loc_eqx_AssumedOnAcquisitionDerivativeFinancialLiabilities_019b9d91-2e45-7763-b134-f6352791cc4e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ExercisedFinancialInstrumentsCarryingAmount_019bf36a-305c-731e-b046-8370d6cd86a3" xlink:href="eqx-20251231.xsd#eqx_ExercisedFinancialInstrumentsCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d91-2e45-7847-a420-914272096067" xlink:to="loc_eqx_ExercisedFinancialInstrumentsCarryingAmount_019bf36a-305c-731e-b046-8370d6cd86a3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_019b9d91-2e45-75c0-928f-da2474ef5e39" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DerivativeFinancialInstrumentsLineItems_019b9d91-2e45-7847-a420-914272096067" xlink:to="loc_ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_019b9d91-2e45-75c0-928f-da2474ef5e39" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities_019b9d92-2d93-7ce2-8f09-1eadd2b6e905" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/RECLAMATIONANDCLOSURECOSTPROVISIONSScheduleofDetailedInformationaboutReclamationObligationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#RECLAMATIONANDCLOSURECOSTPROVISIONSScheduleofDetailedInformationaboutReclamationObligationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/RECLAMATIONANDCLOSURECOSTPROVISIONSScheduleofDetailedInformationaboutReclamationObligationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7626-b213-8f7e0ec87ef9" xlink:href="eqx-20251231.xsd#eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationTable_019b47d6-443b-71a5-b17d-ea73f502bad3" xlink:href="eqx-20251231.xsd#eqx_ScheduleOfDetailedInformationAboutReclamationObligationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7626-b213-8f7e0ec87ef9" xlink:to="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationTable_019b47d6-443b-71a5-b17d-ea73f502bad3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_019b47d6-443b-74fd-a551-ea294f5116a1" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationTable_019b47d6-443b-71a5-b17d-ea73f502bad3" xlink:to="loc_srt_StatementGeographicalAxis_019b47d6-443b-74fd-a551-ea294f5116a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019b47d6-443b-74fd-a551-ea294f5116a1_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_019b47d6-443b-74fd-a551-ea294f5116a1" xlink:to="loc_srt_SegmentGeographicalDomain_019b47d6-443b-74fd-a551-ea294f5116a1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019b47d6-443b-78c8-adcd-6bd0a9146927" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_019b47d6-443b-74fd-a551-ea294f5116a1" xlink:to="loc_srt_SegmentGeographicalDomain_019b47d6-443b-78c8-adcd-6bd0a9146927" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CA_019b47d6-443b-7e48-98c0-485c7e08263b" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019b47d6-443b-78c8-adcd-6bd0a9146927" xlink:to="loc_country_CA_019b47d6-443b-7e48-98c0-485c7e08263b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_019b47d6-443b-7869-9229-6acb3bfa2b07" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019b47d6-443b-78c8-adcd-6bd0a9146927" xlink:to="loc_country_US_019b47d6-443b-7869-9229-6acb3bfa2b07" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_NI_019b9bcb-9aa2-7687-aeed-6010b4ff2261" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_NI"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019b47d6-443b-78c8-adcd-6bd0a9146927" xlink:to="loc_country_NI_019b9bcb-9aa2-7687-aeed-6010b4ff2261" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_MX_019b47d6-443b-72b6-b244-0092ef3ff975" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_MX"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019b47d6-443b-78c8-adcd-6bd0a9146927" xlink:to="loc_country_MX_019b47d6-443b-72b6-b244-0092ef3ff975" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_BR_019b47d6-443b-7cf2-80c6-addd5e73784f" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_BR"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019b47d6-443b-78c8-adcd-6bd0a9146927" xlink:to="loc_country_BR_019b47d6-443b-7cf2-80c6-addd5e73784f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019b9bd2-7eba-74c6-bde5-e2e4f7f11308" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationTable_019b47d6-443b-71a5-b17d-ea73f502bad3" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019b9bd2-7eba-74c6-bde5-e2e4f7f11308" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9bd2-7eba-74c6-bde5-e2e4f7f11308_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9bd2-7eba-74c6-bde5-e2e4f7f11308" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9bd2-7eba-74c6-bde5-e2e4f7f11308_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9bd2-7eba-7476-9281-289af2a67dab" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9bd2-7eba-74c6-bde5-e2e4f7f11308" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9bd2-7eba-7476-9281-289af2a67dab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneAcquisitionMember_019b9bda-dfaf-7060-b715-8a02736fdf7d" xlink:href="eqx-20251231.xsd#eqx_GreenstoneAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b9bd2-7eba-7476-9281-289af2a67dab" xlink:to="loc_eqx_GreenstoneAcquisitionMember_019b9bda-dfaf-7060-b715-8a02736fdf7d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CalibreAcquisitionMember_019b9bd2-ff6a-7c8f-a574-3ccf8eb6b905" xlink:href="eqx-20251231.xsd#eqx_CalibreAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b9bd2-7eba-7476-9281-289af2a67dab" xlink:to="loc_eqx_CalibreAcquisitionMember_019b9bd2-ff6a-7c8f-a574-3ccf8eb6b905" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ReclamationObligations_019b47d6-443b-7726-94cf-678cb9907b66" xlink:href="eqx-20251231.xsd#eqx_ReclamationObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7626-b213-8f7e0ec87ef9" xlink:to="loc_eqx_ReclamationObligations_019b47d6-443b-7726-94cf-678cb9907b66" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ReclamationObligationAcquisition_019b47d6-443b-7e1b-b6bc-22eadb1cacbb" xlink:href="eqx-20251231.xsd#eqx_ReclamationObligationAcquisition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7626-b213-8f7e0ec87ef9" xlink:to="loc_eqx_ReclamationObligationAcquisition_019b47d6-443b-7e1b-b6bc-22eadb1cacbb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ReclamationObligationChangesInEstimates_019b47d6-443b-7f7f-9bf4-5672cb4dcbc0" xlink:href="eqx-20251231.xsd#eqx_ReclamationObligationChangesInEstimates"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7626-b213-8f7e0ec87ef9" xlink:to="loc_eqx_ReclamationObligationChangesInEstimates_019b47d6-443b-7f7f-9bf4-5672cb4dcbc0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ReclamationObligationDisposals_019b9bd1-8913-7112-a452-8b66515e828d" xlink:href="eqx-20251231.xsd#eqx_ReclamationObligationDisposals"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7626-b213-8f7e0ec87ef9" xlink:to="loc_eqx_ReclamationObligationDisposals_019b9bd1-8913-7112-a452-8b66515e828d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ReclamationObligationReclamationExpenditure_019b47d6-443b-796c-bc03-f60991421502" xlink:href="eqx-20251231.xsd#eqx_ReclamationObligationReclamationExpenditure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7626-b213-8f7e0ec87ef9" xlink:to="loc_eqx_ReclamationObligationReclamationExpenditure_019b47d6-443b-796c-bc03-f60991421502" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ReclamationObligationAccretion_019b47d6-443b-7232-9627-612d32074711" xlink:href="eqx-20251231.xsd#eqx_ReclamationObligationAccretion"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7626-b213-8f7e0ec87ef9" xlink:to="loc_eqx_ReclamationObligationAccretion_019b47d6-443b-7232-9627-612d32074711" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ReclamationObligationForeignCurrencyTranslation_019b47d6-443b-7152-9271-1e6b78cd7de8" xlink:href="eqx-20251231.xsd#eqx_ReclamationObligationForeignCurrencyTranslation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7626-b213-8f7e0ec87ef9" xlink:to="loc_eqx_ReclamationObligationForeignCurrencyTranslation_019b47d6-443b-7152-9271-1e6b78cd7de8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ReclassifiedRelatingToAssetsHeldForSale_019b9bd0-b78a-7176-871f-c4ff86234c7d" xlink:href="eqx-20251231.xsd#eqx_ReclassifiedRelatingToAssetsHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7626-b213-8f7e0ec87ef9" xlink:to="loc_eqx_ReclassifiedRelatingToAssetsHeldForSale_019b9bd0-b78a-7176-871f-c4ff86234c7d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ReclamationObligations_019b47d6-443b-774f-a8fe-d61b33f2b7f7" xlink:href="eqx-20251231.xsd#eqx_ReclamationObligations"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ReclamationObligationsCurrent_019b47d6-443b-7d5c-b471-c4eff55d8cde" xlink:href="eqx-20251231.xsd#eqx_ReclamationObligationsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7626-b213-8f7e0ec87ef9" xlink:to="loc_eqx_ReclamationObligationsCurrent_019b47d6-443b-7d5c-b471-c4eff55d8cde" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ReclamationObligationsNoncurrent_019b47d6-443b-7fd1-85fd-ef8200adfc97" xlink:href="eqx-20251231.xsd#eqx_ReclamationObligationsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7626-b213-8f7e0ec87ef9" xlink:to="loc_eqx_ReclamationObligationsNoncurrent_019b47d6-443b-7fd1-85fd-ef8200adfc97" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ReclamationObligations_019b47d6-443b-756c-abbf-ce4bab613412" xlink:href="eqx-20251231.xsd#eqx_ReclamationObligations"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/RECLAMATIONANDCLOSURECOSTPROVISIONSAdditionalInformationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#RECLAMATIONANDCLOSURECOSTPROVISIONSAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/RECLAMATIONANDCLOSURECOSTPROVISIONSAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7c50-9722-7e0e8556577e" xlink:href="eqx-20251231.xsd#eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationTable_019b47d6-443b-76ed-8cfc-f3f1d1101327" xlink:href="eqx-20251231.xsd#eqx_ScheduleOfDetailedInformationAboutReclamationObligationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7c50-9722-7e0e8556577e" xlink:to="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationTable_019b47d6-443b-76ed-8cfc-f3f1d1101327" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RangeAxis_019b47d6-443b-78e5-a01f-97abe62635f0" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationTable_019b47d6-443b-76ed-8cfc-f3f1d1101327" xlink:to="loc_ifrs-full_RangeAxis_019b47d6-443b-78e5-a01f-97abe62635f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RangeDomain_019b47d6-443b-78e5-a01f-97abe62635f0_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_RangeAxis_019b47d6-443b-78e5-a01f-97abe62635f0" xlink:to="loc_ifrs-full_RangeDomain_019b47d6-443b-78e5-a01f-97abe62635f0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RangeDomain_019b47d6-443b-70d3-84cd-cb37653c3def" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_RangeAxis_019b47d6-443b-78e5-a01f-97abe62635f0" xlink:to="loc_ifrs-full_RangeDomain_019b47d6-443b-70d3-84cd-cb37653c3def" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BottomOfRangeMember_019b47d6-443b-7d64-b767-263db87155b4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BottomOfRangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangeDomain_019b47d6-443b-70d3-84cd-cb37653c3def" xlink:to="loc_ifrs-full_BottomOfRangeMember_019b47d6-443b-7d64-b767-263db87155b4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TopOfRangeMember_019b47d6-443b-7b1c-b672-7005c5632d88" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TopOfRangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangeDomain_019b47d6-443b-70d3-84cd-cb37653c3def" xlink:to="loc_ifrs-full_TopOfRangeMember_019b47d6-443b-7b1c-b672-7005c5632d88" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfGrowthRateUsedToExtrapolateCashFlowProjections_019b47d6-443b-74bc-b7ee-63cfcbaa4e86" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfGrowthRateUsedToExtrapolateCashFlowProjections"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7c50-9722-7e0e8556577e" xlink:to="loc_ifrs-full_DescriptionOfGrowthRateUsedToExtrapolateCashFlowProjections_019b47d6-443b-74bc-b7ee-63cfcbaa4e86" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfDiscountRatesAppliedToCashFlowProjections_019b47d6-443b-7705-aa98-79ca03be9128" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfDiscountRatesAppliedToCashFlowProjections"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7c50-9722-7e0e8556577e" xlink:to="loc_ifrs-full_DescriptionOfDiscountRatesAppliedToCashFlowProjections_019b47d6-443b-7705-aa98-79ca03be9128" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ReclamationObligationUndiscountedValue_019b47d6-443b-737a-9673-80df5693e75e" xlink:href="eqx-20251231.xsd#eqx_ReclamationObligationUndiscountedValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7c50-9722-7e0e8556577e" xlink:to="loc_eqx_ReclamationObligationUndiscountedValue_019b47d6-443b-737a-9673-80df5693e75e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CollateralForReclamationAmount_019b47d6-443b-7118-a9ac-e0526fe75941" xlink:href="eqx-20251231.xsd#eqx_CollateralForReclamationAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ScheduleOfDetailedInformationAboutReclamationObligationLineItems_019b47d6-443b-7c50-9722-7e0e8556577e" xlink:to="loc_eqx_CollateralForReclamationAmount_019b47d6-443b-7118-a9ac-e0526fe75941" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/OTHERNONCURRENTLIABILITIESScheduleofthecarryingamountoftheEquipmentFacilitiesDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#OTHERNONCURRENTLIABILITIESScheduleofthecarryingamountoftheEquipmentFacilitiesDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/OTHERNONCURRENTLIABILITIESScheduleofthecarryingamountoftheEquipmentFacilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems_019b9c24-4068-7e54-aed3-78947b2442a3" xlink:href="eqx-20251231.xsd#eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesTable_019b9c24-4068-7cc0-87e9-d95d6dbe85ff" xlink:href="eqx-20251231.xsd#eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems_019b9c24-4068-7e54-aed3-78947b2442a3" xlink:to="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesTable_019b9c24-4068-7cc0-87e9-d95d6dbe85ff" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameAxis_019b9c24-4068-7b87-81ed-6e12309a6fa7" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesTable_019b9c24-4068-7cc0-87e9-d95d6dbe85ff" xlink:to="loc_ifrs-full_BorrowingsByNameAxis_019b9c24-4068-7b87-81ed-6e12309a6fa7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019b9c24-4068-7b87-81ed-6e12309a6fa7_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019b9c24-4068-7b87-81ed-6e12309a6fa7" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019b9c24-4068-7b87-81ed-6e12309a6fa7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019b9c24-4068-7121-8991-cc63da0c842c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019b9c24-4068-7b87-81ed-6e12309a6fa7" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019b9c24-4068-7121-8991-cc63da0c842c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EquipmentFacilityMember_019b9c24-4068-79ba-8434-731c5dea3051" xlink:href="eqx-20251231.xsd#eqx_EquipmentFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b9c24-4068-7121-8991-cc63da0c842c" xlink:to="loc_eqx_EquipmentFacilityMember_019b9c24-4068-79ba-8434-731c5dea3051" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019b9c24-4068-72dd-861c-2dba54b2cfa1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesTable_019b9c24-4068-7cc0-87e9-d95d6dbe85ff" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019b9c24-4068-72dd-861c-2dba54b2cfa1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9c24-4068-72dd-861c-2dba54b2cfa1_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9c24-4068-72dd-861c-2dba54b2cfa1" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9c24-4068-72dd-861c-2dba54b2cfa1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9c24-4068-775e-9b90-912595f53da0" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9c24-4068-72dd-861c-2dba54b2cfa1" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9c24-4068-775e-9b90-912595f53da0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneAcquisitionMember_019b9c24-4068-732d-ae46-33d8f2a50056" xlink:href="eqx-20251231.xsd#eqx_GreenstoneAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b9c24-4068-775e-9b90-912595f53da0" xlink:to="loc_eqx_GreenstoneAcquisitionMember_019b9c24-4068-732d-ae46-33d8f2a50056" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ValentineMember_019b9c24-4068-704c-a07a-04037144731e" xlink:href="eqx-20251231.xsd#eqx_ValentineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b9c24-4068-775e-9b90-912595f53da0" xlink:to="loc_eqx_ValentineMember_019b9c24-4068-704c-a07a-04037144731e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EquipmentFinancingArrangementCurrent_019b9c24-4068-7e05-93e2-40e5ff258ba3" xlink:href="eqx-20251231.xsd#eqx_EquipmentFinancingArrangementCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems_019b9c24-4068-7e54-aed3-78947b2442a3" xlink:to="loc_eqx_EquipmentFinancingArrangementCurrent_019b9c24-4068-7e05-93e2-40e5ff258ba3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EquipmentFinancingArrangementNoncurrent_019b9c24-4068-78d5-ae5e-012296228ae6" xlink:href="eqx-20251231.xsd#eqx_EquipmentFinancingArrangementNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems_019b9c24-4068-7e54-aed3-78947b2442a3" xlink:to="loc_eqx_EquipmentFinancingArrangementNoncurrent_019b9c24-4068-78d5-ae5e-012296228ae6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EquipmentFinancingArrangement_019d1c34-2f33-71e8-834d-35d25f181f46" xlink:href="eqx-20251231.xsd#eqx_EquipmentFinancingArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems_019b9c24-4068-7e54-aed3-78947b2442a3" xlink:to="loc_eqx_EquipmentFinancingArrangement_019d1c34-2f33-71e8-834d-35d25f181f46" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/OTHERNONCURRENTLIABILITIESScheduleOfReconciliationofChangesinEquipmentFacilityDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#OTHERNONCURRENTLIABILITIESScheduleOfReconciliationofChangesinEquipmentFacilityDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/OTHERNONCURRENTLIABILITIESScheduleOfReconciliationofChangesinEquipmentFacilityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems_019b47d6-443b-74e5-a9e0-38e17065bb46" xlink:href="eqx-20251231.xsd#eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesTable_019b47d6-443b-7878-9162-8e9ce4972f2e" xlink:href="eqx-20251231.xsd#eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems_019b47d6-443b-74e5-a9e0-38e17065bb46" xlink:to="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesTable_019b47d6-443b-7878-9162-8e9ce4972f2e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019b9c06-0851-738d-b0c6-f7eb3e1badc3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesTable_019b47d6-443b-7878-9162-8e9ce4972f2e" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019b9c06-0851-738d-b0c6-f7eb3e1badc3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9c06-0851-738d-b0c6-f7eb3e1badc3_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9c06-0851-738d-b0c6-f7eb3e1badc3" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9c06-0851-738d-b0c6-f7eb3e1badc3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9c06-0851-7ecf-8245-bec66f520f1b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9c06-0851-738d-b0c6-f7eb3e1badc3" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9c06-0851-7ecf-8245-bec66f520f1b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CalibreAcquisitionMember_019b9c06-0851-734f-8297-13b41c0cbd5f" xlink:href="eqx-20251231.xsd#eqx_CalibreAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b9c06-0851-7ecf-8245-bec66f520f1b" xlink:to="loc_eqx_CalibreAcquisitionMember_019b9c06-0851-734f-8297-13b41c0cbd5f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneAcquisitionMember_019b9c06-0851-7391-999d-dc51a57266e8" xlink:href="eqx-20251231.xsd#eqx_GreenstoneAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b9c06-0851-7ecf-8245-bec66f520f1b" xlink:to="loc_eqx_GreenstoneAcquisitionMember_019b9c06-0851-7391-999d-dc51a57266e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameAxis_019b9c27-2240-7c28-97f7-0214b83d51c7" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesTable_019b47d6-443b-7878-9162-8e9ce4972f2e" xlink:to="loc_ifrs-full_BorrowingsByNameAxis_019b9c27-2240-7c28-97f7-0214b83d51c7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019b9c27-2240-7c28-97f7-0214b83d51c7_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019b9c27-2240-7c28-97f7-0214b83d51c7" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019b9c27-2240-7c28-97f7-0214b83d51c7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019b9c27-2240-7eca-821b-6597f341d598" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019b9c27-2240-7c28-97f7-0214b83d51c7" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019b9c27-2240-7eca-821b-6597f341d598" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EquipmentFacilityMember_019b9c27-2240-747d-aa9f-98bebc202196" xlink:href="eqx-20251231.xsd#eqx_EquipmentFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b9c27-2240-7eca-821b-6597f341d598" xlink:to="loc_eqx_EquipmentFacilityMember_019b9c27-2240-747d-aa9f-98bebc202196" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitieRollForward_019b47d6-443b-7930-bb1d-45b305eaee89" xlink:href="eqx-20251231.xsd#eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitieRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems_019b47d6-443b-74e5-a9e0-38e17065bb46" xlink:to="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitieRollForward_019b47d6-443b-7930-bb1d-45b305eaee89" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherNoncurrentLiabilities_019b47d6-443b-7300-a9d4-a1bb9a752f74" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherNoncurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitieRollForward_019b47d6-443b-7930-bb1d-45b305eaee89" xlink:to="loc_ifrs-full_OtherNoncurrentLiabilities_019b47d6-443b-7300-a9d4-a1bb9a752f74" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_019b47d6-443b-7f95-a17d-88c87fb3c6a8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitieRollForward_019b47d6-443b-7930-bb1d-45b305eaee89" xlink:to="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_019b47d6-443b-7f95-a17d-88c87fb3c6a8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_RepaymentsOfOtherFinancingActivities_019b47d6-443b-76b3-9901-4868c0518955" xlink:href="eqx-20251231.xsd#eqx_RepaymentsOfOtherFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitieRollForward_019b47d6-443b-7930-bb1d-45b305eaee89" xlink:to="loc_eqx_RepaymentsOfOtherFinancingActivities_019b47d6-443b-76b3-9901-4868c0518955" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestPaidClassifiedAsFinancingActivities_019b47d6-443b-760b-9573-6ab28dfbc4f7" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestPaidClassifiedAsFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitieRollForward_019b47d6-443b-7930-bb1d-45b305eaee89" xlink:to="loc_ifrs-full_InterestPaidClassifiedAsFinancingActivities_019b47d6-443b-760b-9573-6ab28dfbc4f7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AcquisitionrelatedCostsForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination_019b47d6-443b-731d-896c-20843538928e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AcquisitionrelatedCostsForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitieRollForward_019b47d6-443b-7930-bb1d-45b305eaee89" xlink:to="loc_ifrs-full_AcquisitionrelatedCostsForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination_019b47d6-443b-731d-896c-20843538928e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_InterestAndAccretionExpense_019b47d6-443b-70e2-82e8-47d071e025a4" xlink:href="eqx-20251231.xsd#eqx_InterestAndAccretionExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitieRollForward_019b47d6-443b-7930-bb1d-45b305eaee89" xlink:to="loc_eqx_InterestAndAccretionExpense_019b47d6-443b-70e2-82e8-47d071e025a4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss_019b47d6-443b-7b95-af37-195ca3285c9a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitieRollForward_019b47d6-443b-7930-bb1d-45b305eaee89" xlink:to="loc_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss_019b47d6-443b-7b95-af37-195ca3285c9a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherNoncurrentLiabilities_019b47d6-443b-7655-a4b6-775ed1a1c97d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherNoncurrentLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AccruedInterestLiability_019b47d6-443b-7b93-83cb-abbe0da9fdbf" xlink:href="eqx-20251231.xsd#eqx_AccruedInterestLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems_019b47d6-443b-74e5-a9e0-38e17065bb46" xlink:to="loc_eqx_AccruedInterestLiability_019b47d6-443b-7b93-83cb-abbe0da9fdbf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_OtherNonCurrentLiabilitiesNetOfAccruedInterest_019b47d6-443b-7ac9-b8f1-3ea282592ee9" xlink:href="eqx-20251231.xsd#eqx_OtherNonCurrentLiabilitiesNetOfAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems_019b47d6-443b-74e5-a9e0-38e17065bb46" xlink:to="loc_eqx_OtherNonCurrentLiabilitiesNetOfAccruedInterest_019b47d6-443b-7ac9-b8f1-3ea282592ee9" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/OTHERNONCURRENTLIABILITIESAdditionalInformationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#OTHERNONCURRENTLIABILITIESAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/OTHERNONCURRENTLIABILITIESAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems_019b9c36-d50c-7fbc-a428-71b248ca3499" xlink:href="eqx-20251231.xsd#eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesTable_019b9c36-d50c-7981-a22f-df8df5428985" xlink:href="eqx-20251231.xsd#eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems_019b9c36-d50c-7fbc-a428-71b248ca3499" xlink:to="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesTable_019b9c36-d50c-7981-a22f-df8df5428985" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019b9c36-d50c-7977-8749-bedc6be88b28" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesTable_019b9c36-d50c-7981-a22f-df8df5428985" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019b9c36-d50c-7977-8749-bedc6be88b28" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9c36-d50c-7977-8749-bedc6be88b28_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9c36-d50c-7977-8749-bedc6be88b28" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9c36-d50c-7977-8749-bedc6be88b28_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9c36-d50c-7d26-a491-6b0cfdbd0789" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9c36-d50c-7977-8749-bedc6be88b28" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9c36-d50c-7d26-a491-6b0cfdbd0789" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneAcquisitionMember_019b9c36-d50c-780e-a812-2ced32acdcd1" xlink:href="eqx-20251231.xsd#eqx_GreenstoneAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b9c36-d50c-7d26-a491-6b0cfdbd0789" xlink:to="loc_eqx_GreenstoneAcquisitionMember_019b9c36-d50c-780e-a812-2ced32acdcd1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ValentineMember_019b9c36-d50c-7b4c-b6b7-f66682d9cc80" xlink:href="eqx-20251231.xsd#eqx_ValentineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b9c36-d50c-7d26-a491-6b0cfdbd0789" xlink:to="loc_eqx_ValentineMember_019b9c36-d50c-7b4c-b6b7-f66682d9cc80" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfInterestRatesAxis_019bfeee-30f5-78c0-a6c7-85bdbbd13b73" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfInterestRatesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesTable_019b9c36-d50c-7981-a22f-df8df5428985" xlink:to="loc_ifrs-full_TypesOfInterestRatesAxis_019bfeee-30f5-78c0-a6c7-85bdbbd13b73" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfInterestRatesDomain_019bfeee-30f5-78c0-a6c7-85bdbbd13b73_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfInterestRatesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfInterestRatesAxis_019bfeee-30f5-78c0-a6c7-85bdbbd13b73" xlink:to="loc_ifrs-full_TypesOfInterestRatesDomain_019bfeee-30f5-78c0-a6c7-85bdbbd13b73_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfInterestRatesDomain_019bfeee-30f5-79d7-adfa-41df1e97a48c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfInterestRatesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfInterestRatesAxis_019bfeee-30f5-78c0-a6c7-85bdbbd13b73" xlink:to="loc_ifrs-full_TypesOfInterestRatesDomain_019bfeee-30f5-79d7-adfa-41df1e97a48c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SecuredOvernightFinancingRateMember_019bfeee-30f5-722c-a9a5-6297f068e4fb" xlink:href="eqx-20251231.xsd#eqx_SecuredOvernightFinancingRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfInterestRatesDomain_019bfeee-30f5-79d7-adfa-41df1e97a48c" xlink:to="loc_eqx_SecuredOvernightFinancingRateMember_019bfeee-30f5-722c-a9a5-6297f068e4fb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PercentageOfCostOfNewMobileEquipmentPurchased_019b9c36-d50c-74ae-bfc6-27a33b64198b" xlink:href="eqx-20251231.xsd#eqx_PercentageOfCostOfNewMobileEquipmentPurchased"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems_019b9c36-d50c-7fbc-a428-71b248ca3499" xlink:to="loc_eqx_PercentageOfCostOfNewMobileEquipmentPurchased_019b9c36-d50c-74ae-bfc6-27a33b64198b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfEffectiveInterestRateDeterminedOnDateOfReclassification_019b9c36-d50c-75af-a3fc-aadbf0c0606f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfEffectiveInterestRateDeterminedOnDateOfReclassification"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems_019b9c36-d50c-7fbc-a428-71b248ca3499" xlink:to="loc_ifrs-full_DescriptionOfEffectiveInterestRateDeterminedOnDateOfReclassification_019b9c36-d50c-75af-a3fc-aadbf0c0606f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_InterestPayableQuarterlyOverAPeriod_019b9c36-d50c-766e-b094-f907a031b767" xlink:href="eqx-20251231.xsd#eqx_InterestPayableQuarterlyOverAPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems_019b9c36-d50c-7fbc-a428-71b248ca3499" xlink:to="loc_eqx_InterestPayableQuarterlyOverAPeriod_019b9c36-d50c-766e-b094-f907a031b767" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsAdjustmentToInterestRateBasis_019bfeee-30f5-7740-a269-7fa21b3b5f9c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsAdjustmentToInterestRateBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ChangedInCarryingAmountOfOtherNonCurrentLiabilitiesLineItems_019b9c36-d50c-7fbc-a428-71b248ca3499" xlink:to="loc_ifrs-full_BorrowingsAdjustmentToInterestRateBasis_019bfeee-30f5-7740-a269-7fa21b3b5f9c" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/LEASESScheduleofQuantitativeInformationaboutRightofUseAssetsDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#LEASESScheduleofQuantitativeInformationaboutRightofUseAssetsDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/LEASESScheduleofQuantitativeInformationaboutRightofUseAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems_019b9c13-e640-7f70-a525-e89cf1be7e09" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsTable_019b9c13-e640-7ac2-a383-1bf2d39654e8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems_019b9c13-e640-7f70-a525-e89cf1be7e09" xlink:to="loc_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsTable_019b9c13-e640-7ac2-a383-1bf2d39654e8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019b9c13-e640-7edc-8a4d-9fb7386e361e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsTable_019b9c13-e640-7ac2-a383-1bf2d39654e8" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019b9c13-e640-7edc-8a4d-9fb7386e361e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9c13-e640-7edc-8a4d-9fb7386e361e_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9c13-e640-7edc-8a4d-9fb7386e361e" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9c13-e640-7edc-8a4d-9fb7386e361e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9c13-e640-70de-b5bd-d235dc52095c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9c13-e640-7edc-8a4d-9fb7386e361e" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9c13-e640-70de-b5bd-d235dc52095c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CalibreAcquisitionMember_019b9c13-e640-7d53-8fa1-b60845d81201" xlink:href="eqx-20251231.xsd#eqx_CalibreAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b9c13-e640-70de-b5bd-d235dc52095c" xlink:to="loc_eqx_CalibreAcquisitionMember_019b9c13-e640-7d53-8fa1-b60845d81201" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneAcquisitionMember_019b9c13-e640-7ac2-ad05-c3f88d1e9b54" xlink:href="eqx-20251231.xsd#eqx_GreenstoneAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b9c13-e640-70de-b5bd-d235dc52095c" xlink:to="loc_eqx_GreenstoneAcquisitionMember_019b9c13-e640-7ac2-ad05-c3f88d1e9b54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RightofuseAssets_019b47d6-443b-7df4-bfb3-5120ed3f94fd" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RightofuseAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems_019b9c13-e640-7f70-a525-e89cf1be7e09" xlink:to="loc_ifrs-full_RightofuseAssets_019b47d6-443b-7df4-bfb3-5120ed3f94fd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AcquisitionsThroughBusinessCombinationsRightofuseAssets_019b47d6-443b-719a-bf15-0d4fbb62fc62" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AcquisitionsThroughBusinessCombinationsRightofuseAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems_019b9c13-e640-7f70-a525-e89cf1be7e09" xlink:to="loc_ifrs-full_AcquisitionsThroughBusinessCombinationsRightofuseAssets_019b47d6-443b-719a-bf15-0d4fbb62fc62" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdditionsToRightofuseAssets_019b47d6-443b-7e44-ab49-0e82b936488c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdditionsToRightofuseAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems_019b9c13-e640-7f70-a525-e89cf1be7e09" xlink:to="loc_ifrs-full_AdditionsToRightofuseAssets_019b47d6-443b-7e44-ab49-0e82b936488c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisposalsRightofuseAssets_019b47d6-443b-71b8-8640-1e41b6c7cae6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisposalsRightofuseAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems_019b9c13-e640-7f70-a525-e89cf1be7e09" xlink:to="loc_ifrs-full_DisposalsRightofuseAssets_019b47d6-443b-71b8-8640-1e41b6c7cae6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DepreciationRightofuseAssets_019b47d6-443b-7e3c-b678-23185556a556" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DepreciationRightofuseAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems_019b9c13-e640-7f70-a525-e89cf1be7e09" xlink:to="loc_ifrs-full_DepreciationRightofuseAssets_019b47d6-443b-7e3c-b678-23185556a556" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DecreaseThroughClassifiedAsHeldForSaleRightofuseAssets_019bf37a-5d4f-7ef4-9113-686ae764fa43" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DecreaseThroughClassifiedAsHeldForSaleRightofuseAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems_019b9c13-e640-7f70-a525-e89cf1be7e09" xlink:to="loc_ifrs-full_DecreaseThroughClassifiedAsHeldForSaleRightofuseAssets_019bf37a-5d4f-7ef4-9113-686ae764fa43" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RightofuseAssets_019b47d6-443b-76d7-a8e3-f99aa66327a8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RightofuseAssets"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/SHARECAPITALANDSHAREBASEDPAYMENTSAdditionalInformationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#SHARECAPITALANDSHAREBASEDPAYMENTSAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/SHARECAPITALANDSHAREBASEDPAYMENTSAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable_019b47d6-443b-777b-b3cb-0c68e585ca46" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable_019b47d6-443b-777b-b3cb-0c68e585ca46" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameAxis_019b9ca1-b982-7323-a10e-f706a3e193ab" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable_019b47d6-443b-777b-b3cb-0c68e585ca46" xlink:to="loc_ifrs-full_BorrowingsByNameAxis_019b9ca1-b982-7323-a10e-f706a3e193ab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019b9ca1-b982-7323-a10e-f706a3e193ab_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019b9ca1-b982-7323-a10e-f706a3e193ab" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019b9ca1-b982-7323-a10e-f706a3e193ab_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019b9ca1-b982-79ab-8c5c-fad0081bdd2e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019b9ca1-b982-7323-a10e-f706a3e193ab" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019b9ca1-b982-79ab-8c5c-fad0081bdd2e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_TwoThousandAndTwentyConvertibleNotesMember_019b9ca1-b982-73bf-a432-b0d36e9965c4" xlink:href="eqx-20251231.xsd#eqx_TwoThousandAndTwentyConvertibleNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b9ca1-b982-79ab-8c5c-fad0081bdd2e" xlink:to="loc_eqx_TwoThousandAndTwentyConvertibleNotesMember_019b9ca1-b982-73bf-a432-b0d36e9965c4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_TwoThousandAndNineteenConvertibleNotesMember_019b9ca1-b982-73fb-a27f-1b6dfcb7fcc6" xlink:href="eqx-20251231.xsd#eqx_TwoThousandAndNineteenConvertibleNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b9ca1-b982-79ab-8c5c-fad0081bdd2e" xlink:to="loc_eqx_TwoThousandAndNineteenConvertibleNotesMember_019b9ca1-b982-73fb-a27f-1b6dfcb7fcc6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019b9ca1-b982-796c-b3be-c116198da040" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable_019b47d6-443b-777b-b3cb-0c68e585ca46" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019b9ca1-b982-796c-b3be-c116198da040" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9ca1-b982-796c-b3be-c116198da040_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9ca1-b982-796c-b3be-c116198da040" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9ca1-b982-796c-b3be-c116198da040_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9ca1-b982-708a-ab77-94ea74fd9019" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9ca1-b982-796c-b3be-c116198da040" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9ca1-b982-708a-ab77-94ea74fd9019" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PremierGoldMinesLimitedMember_019b9ca1-b982-71cf-8a1e-8eaf70e800f2" xlink:href="eqx-20251231.xsd#eqx_PremierGoldMinesLimitedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b9ca1-b982-708a-ab77-94ea74fd9019" xlink:to="loc_eqx_PremierGoldMinesLimitedMember_019b9ca1-b982-71cf-8a1e-8eaf70e800f2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b9ca1-b982-778d-9e1c-ccdf6dde959e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable_019b47d6-443b-777b-b3cb-0c68e585ca46" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b9ca1-b982-778d-9e1c-ccdf6dde959e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b9ca1-b982-778d-9e1c-ccdf6dde959e_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b9ca1-b982-778d-9e1c-ccdf6dde959e" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b9ca1-b982-778d-9e1c-ccdf6dde959e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b9ca1-b982-7cb9-b833-f798bd2bcc52" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b9ca1-b982-778d-9e1c-ccdf6dde959e" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b9ca1-b982-7cb9-b833-f798bd2bcc52" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_RestrictedShareUnitsAndPerformanceBasedRestrictedShareUnitsMember_019b9ca1-b982-7bcc-94e3-16b248f337c1" xlink:href="eqx-20251231.xsd#eqx_RestrictedShareUnitsAndPerformanceBasedRestrictedShareUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b9ca1-b982-7cb9-b833-f798bd2bcc52" xlink:to="loc_eqx_RestrictedShareUnitsAndPerformanceBasedRestrictedShareUnitsMember_019b9ca1-b982-7bcc-94e3-16b248f337c1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PerformanceBasedRestrictedShareUnitsMember_019b9ca1-b982-7dec-8e20-83135447997e" xlink:href="eqx-20251231.xsd#eqx_PerformanceBasedRestrictedShareUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b9ca1-b982-7cb9-b833-f798bd2bcc52" xlink:to="loc_eqx_PerformanceBasedRestrictedShareUnitsMember_019b9ca1-b982-7dec-8e20-83135447997e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CashSettledEquityAwardsMember_019b9ca2-3db1-77fd-bc89-04c74116dfb2" xlink:href="eqx-20251231.xsd#eqx_CashSettledEquityAwardsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b9ca1-b982-7cb9-b833-f798bd2bcc52" xlink:to="loc_eqx_CashSettledEquityAwardsMember_019b9ca2-3db1-77fd-bc89-04c74116dfb2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DeferredShareUnitsMember_019b9ca2-3db1-79be-a3e3-2c6b86bf36bf" xlink:href="eqx-20251231.xsd#eqx_DeferredShareUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b9ca1-b982-7cb9-b833-f798bd2bcc52" xlink:to="loc_eqx_DeferredShareUnitsMember_019b9ca2-3db1-79be-a3e3-2c6b86bf36bf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ShareBasedArrangementPlanNameAxis_019b9ca1-b982-7147-b5c8-54a0a9fb9bf0" xlink:href="eqx-20251231.xsd#eqx_ShareBasedArrangementPlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable_019b47d6-443b-777b-b3cb-0c68e585ca46" xlink:to="loc_eqx_ShareBasedArrangementPlanNameAxis_019b9ca1-b982-7147-b5c8-54a0a9fb9bf0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ShareBasedArrangementPlanNameDomain_019b9ca1-b982-7147-b5c8-54a0a9fb9bf0_default" xlink:href="eqx-20251231.xsd#eqx_ShareBasedArrangementPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_eqx_ShareBasedArrangementPlanNameAxis_019b9ca1-b982-7147-b5c8-54a0a9fb9bf0" xlink:to="loc_eqx_ShareBasedArrangementPlanNameDomain_019b9ca1-b982-7147-b5c8-54a0a9fb9bf0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ShareBasedArrangementPlanNameDomain_019b9ca1-b982-7f92-9e30-2fc898348012" xlink:href="eqx-20251231.xsd#eqx_ShareBasedArrangementPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_eqx_ShareBasedArrangementPlanNameAxis_019b9ca1-b982-7147-b5c8-54a0a9fb9bf0" xlink:to="loc_eqx_ShareBasedArrangementPlanNameDomain_019b9ca1-b982-7f92-9e30-2fc898348012" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EquinoxGoldRestrictedShareUnitPlanMember_019b9ca1-b982-737f-ae8e-05d889722e22" xlink:href="eqx-20251231.xsd#eqx_EquinoxGoldRestrictedShareUnitPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ShareBasedArrangementPlanNameDomain_019b9ca1-b982-7f92-9e30-2fc898348012" xlink:to="loc_eqx_EquinoxGoldRestrictedShareUnitPlanMember_019b9ca1-b982-737f-ae8e-05d889722e22" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RangeAxis_019b9ca1-b982-7553-8eda-d48dbbd517f5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable_019b47d6-443b-777b-b3cb-0c68e585ca46" xlink:to="loc_ifrs-full_RangeAxis_019b9ca1-b982-7553-8eda-d48dbbd517f5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RangeDomain_019b9ca1-b982-7553-8eda-d48dbbd517f5_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_RangeAxis_019b9ca1-b982-7553-8eda-d48dbbd517f5" xlink:to="loc_ifrs-full_RangeDomain_019b9ca1-b982-7553-8eda-d48dbbd517f5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RangeDomain_019b9ca1-b982-7763-a942-9258684d1fb7" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_RangeAxis_019b9ca1-b982-7553-8eda-d48dbbd517f5" xlink:to="loc_ifrs-full_RangeDomain_019b9ca1-b982-7763-a942-9258684d1fb7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BottomOfRangeMember_019b9ca1-b982-7730-8cb7-a9b449e9a146" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BottomOfRangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangeDomain_019b9ca1-b982-7763-a942-9258684d1fb7" xlink:to="loc_ifrs-full_BottomOfRangeMember_019b9ca1-b982-7730-8cb7-a9b449e9a146" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TopOfRangeMember_019b9ca1-b982-72db-9f0e-e6a2454fab7e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TopOfRangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_RangeDomain_019b9ca1-b982-7763-a942-9258684d1fb7" xlink:to="loc_ifrs-full_TopOfRangeMember_019b9ca1-b982-72db-9f0e-e6a2454fab7e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BalanceSheetLocation1Axis_019b9ca2-3db1-7bfa-972e-acaf0e94a802" xlink:href="eqx-20251231.xsd#eqx_BalanceSheetLocation1Axis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable_019b47d6-443b-777b-b3cb-0c68e585ca46" xlink:to="loc_eqx_BalanceSheetLocation1Axis_019b9ca2-3db1-7bfa-972e-acaf0e94a802" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BalanceSheetLocation1Domain_019b9ca2-3db1-7bfa-972e-acaf0e94a802_default" xlink:href="eqx-20251231.xsd#eqx_BalanceSheetLocation1Domain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_eqx_BalanceSheetLocation1Axis_019b9ca2-3db1-7bfa-972e-acaf0e94a802" xlink:to="loc_eqx_BalanceSheetLocation1Domain_019b9ca2-3db1-7bfa-972e-acaf0e94a802_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BalanceSheetLocation1Domain_019b9ca2-3db1-77e7-8df7-a72f1dc40e68" xlink:href="eqx-20251231.xsd#eqx_BalanceSheetLocation1Domain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_eqx_BalanceSheetLocation1Axis_019b9ca2-3db1-7bfa-972e-acaf0e94a802" xlink:to="loc_eqx_BalanceSheetLocation1Domain_019b9ca2-3db1-77e7-8df7-a72f1dc40e68" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_OtherCurrentLiabilities1Member_019b9ca2-3db1-7908-9719-dab0c5b4b12e" xlink:href="eqx-20251231.xsd#eqx_OtherCurrentLiabilities1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_BalanceSheetLocation1Domain_019b9ca2-3db1-77e7-8df7-a72f1dc40e68" xlink:to="loc_eqx_OtherCurrentLiabilities1Member_019b9ca2-3db1-7908-9719-dab0c5b4b12e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_OtherNoncurrentLiabilities1Member_019b9ca2-3db1-76ad-af0e-4ad6e3a867d8" xlink:href="eqx-20251231.xsd#eqx_OtherNoncurrentLiabilities1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_BalanceSheetLocation1Domain_019b9ca2-3db1-77e7-8df7-a72f1dc40e68" xlink:to="loc_eqx_OtherNoncurrentLiabilities1Member_019b9ca2-3db1-76ad-af0e-4ad6e3a867d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseInNumberOfOrdinarySharesIssued_019b9ca1-b982-7bfb-9d05-c5ca83b64cfe" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseInNumberOfOrdinarySharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_ifrs-full_IncreaseDecreaseInNumberOfOrdinarySharesIssued_019b9ca1-b982-7bfb-9d05-c5ca83b64cfe" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NumberOfSharesConversionOfConvertibleNotesAllocatedToEquity_019b9ca1-b982-7fea-a4b4-a75b3470209f" xlink:href="eqx-20251231.xsd#eqx_NumberOfSharesConversionOfConvertibleNotesAllocatedToEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_eqx_NumberOfSharesConversionOfConvertibleNotesAllocatedToEquity_019b9ca1-b982-7fea-a4b4-a75b3470209f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_IssueOfEquityShares_019b9ca1-b982-714f-a16a-8fbfcd549d47" xlink:href="eqx-20251231.xsd#eqx_IssueOfEquityShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_eqx_IssueOfEquityShares_019b9ca1-b982-714f-a16a-8fbfcd549d47" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement2019_019b9ca1-b982-730d-b39b-15eaa32705ee" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement2019"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_ifrs-full_WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement2019_019b9ca1-b982-730d-b39b-15eaa32705ee" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GrossProceedsFromIssuingShares_019b9ca1-b982-7884-81c4-b223f519fd2a" xlink:href="eqx-20251231.xsd#eqx_GrossProceedsFromIssuingShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_eqx_GrossProceedsFromIssuingShares_019b9ca1-b982-7884-81c4-b223f519fd2a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ProceedsFromIssuanceOfPrivatePlacements_019b9ca1-b982-7d21-818b-2369d34716d9" xlink:href="eqx-20251231.xsd#eqx_ProceedsFromIssuanceOfPrivatePlacements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_eqx_ProceedsFromIssuanceOfPrivatePlacements_019b9ca1-b982-7d21-818b-2369d34716d9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_IncreaseDecreaseInCumulativeNumberOfOrdinarySharesIssued_019b9ca1-b982-7e63-b1e4-75a2eef7f00b" xlink:href="eqx-20251231.xsd#eqx_IncreaseDecreaseInCumulativeNumberOfOrdinarySharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_eqx_IncreaseDecreaseInCumulativeNumberOfOrdinarySharesIssued_019b9ca1-b982-7e63-b1e4-75a2eef7f00b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GrossProceedsFromIssuingSharesToCompanyChairman_019b9ca1-b982-704c-877f-0a661d8ab341" xlink:href="eqx-20251231.xsd#eqx_GrossProceedsFromIssuingSharesToCompanyChairman"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_eqx_GrossProceedsFromIssuingSharesToCompanyChairman_019b9ca1-b982-704c-877f-0a661d8ab341" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AwardVestingPeriodForShareBasedPaymentArrangement_019b9ca1-b982-7911-86ed-2f5bb41bd632" xlink:href="eqx-20251231.xsd#eqx_AwardVestingPeriodForShareBasedPaymentArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_eqx_AwardVestingPeriodForShareBasedPaymentArrangement_019b9ca1-b982-7911-86ed-2f5bb41bd632" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SharebasedCompensationArrangementAwardVestingPercentage_019b9ca1-b982-7f81-9dc3-226168876321" xlink:href="eqx-20251231.xsd#eqx_SharebasedCompensationArrangementAwardVestingPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_eqx_SharebasedCompensationArrangementAwardVestingPercentage_019b9ca1-b982-7f81-9dc3-226168876321" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ShareBasedCompensationArrangementAwardComparisonPeriod_019b9ca1-b982-7e1f-92d6-860005bbee7d" xlink:href="eqx-20251231.xsd#eqx_ShareBasedCompensationArrangementAwardComparisonPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_eqx_ShareBasedCompensationArrangementAwardComparisonPeriod_019b9ca1-b982-7e1f-92d6-860005bbee7d" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ShareBasedCompensationArrangementAwardVestingOverPeriod_019b9ca1-fb71-765e-b53d-13309c8a7acc" xlink:href="eqx-20251231.xsd#eqx_ShareBasedCompensationArrangementAwardVestingOverPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_eqx_ShareBasedCompensationArrangementAwardVestingOverPeriod_019b9ca1-fb71-765e-b53d-13309c8a7acc" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ShareBasedCompensationArrangementAwardGrantedPercentage_019b9ca1-fb71-77de-a5e0-34237c8cb3e3" xlink:href="eqx-20251231.xsd#eqx_ShareBasedCompensationArrangementAwardGrantedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_eqx_ShareBasedCompensationArrangementAwardGrantedPercentage_019b9ca1-fb71-77de-a5e0-34237c8cb3e3" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ShareBasedCompensationArrangementAwardGrantedOverPeriod_019b9ca1-fb71-7b33-bbec-3aafce32988a" xlink:href="eqx-20251231.xsd#eqx_ShareBasedCompensationArrangementAwardGrantedOverPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_eqx_ShareBasedCompensationArrangementAwardGrantedOverPeriod_019b9ca1-fb71-7b33-bbec-3aafce32988a" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_WeightedAverageFairValueAtGrantDateOtherEquityInstrumentsGranted_019b9ca1-fb71-775b-8300-04ee1c811873" xlink:href="eqx-20251231.xsd#eqx_WeightedAverageFairValueAtGrantDateOtherEquityInstrumentsGranted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_eqx_WeightedAverageFairValueAtGrantDateOtherEquityInstrumentsGranted_019b9ca1-fb71-775b-8300-04ee1c811873" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_WeightedAverageMultiplierOfOtherEquityInstrumentsExercisedOrVestedInShareBasedPaymentArrangement_019b9ca1-fb71-7b3c-beb1-7af1d3a93c95" xlink:href="eqx-20251231.xsd#eqx_WeightedAverageMultiplierOfOtherEquityInstrumentsExercisedOrVestedInShareBasedPaymentArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_eqx_WeightedAverageMultiplierOfOtherEquityInstrumentsExercisedOrVestedInShareBasedPaymentArrangement_019b9ca1-fb71-7b3c-beb1-7af1d3a93c95" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_WeightedAverageSharePriceShareOptionsGranted2019_019b9ca2-3db1-7f69-9aeb-6433285824fa" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageSharePriceShareOptionsGranted2019"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_ifrs-full_WeightedAverageSharePriceShareOptionsGranted2019_019b9ca2-3db1-7f69-9aeb-6433285824fa" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LiabilitiesFromSharebasedPaymentTransactions2011_019b9ca2-3db1-74ab-9111-46d4bcf403bd" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LiabilitiesFromSharebasedPaymentTransactions2011"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_ifrs-full_LiabilitiesFromSharebasedPaymentTransactions2011_019b9ca2-3db1-74ab-9111-46d4bcf403bd" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_RedemptionPeriodForShareBasedPaymentArrangement_019b9ca2-3db1-7ae2-b90b-1989932e629e" xlink:href="eqx-20251231.xsd#eqx_RedemptionPeriodForShareBasedPaymentArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_eqx_RedemptionPeriodForShareBasedPaymentArrangement_019b9ca2-3db1-7ae2-b90b-1989932e629e" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_WeightedAverageFairValueAtMeasurementDateShareOptionsGranted_019b9ca2-75ba-7e7f-9642-6b2444297983" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageFairValueAtMeasurementDateShareOptionsGranted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_019b9ca1-b982-7175-9365-ce0780d327a3" xlink:to="loc_ifrs-full_WeightedAverageFairValueAtMeasurementDateShareOptionsGranted_019b9ca2-75ba-7e7f-9642-6b2444297983" xlink:type="arc" order="19"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/SHARECAPITALANDSHAREBASEDPAYMENTSScheduleofNumberandWeightedAverageExercisePricesofOtherEquityInstrumentsDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#SHARECAPITALANDSHAREBASEDPAYMENTSScheduleofNumberandWeightedAverageExercisePricesofOtherEquityInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/SHARECAPITALANDSHAREBASEDPAYMENTSScheduleofNumberandWeightedAverageExercisePricesofOtherEquityInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems_019b47d6-443b-7db1-96b1-9e7e150e99b4" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryTable_019b47d6-443b-76d6-846a-3c0290d1ead3" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems_019b47d6-443b-7db1-96b1-9e7e150e99b4" xlink:to="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryTable_019b47d6-443b-76d6-846a-3c0290d1ead3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-443b-7d62-b12b-280b2b898057" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryTable_019b47d6-443b-76d6-846a-3c0290d1ead3" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-443b-7d62-b12b-280b2b898057" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443b-7d62-b12b-280b2b898057_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-443b-7d62-b12b-280b2b898057" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443b-7d62-b12b-280b2b898057_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443b-7c0f-b8c2-1ed856ae0567" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-443b-7d62-b12b-280b2b898057" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443b-7c0f-b8c2-1ed856ae0567" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RestrictedShareUnitsMember_019b47d6-443b-7935-8fbb-02d627d241e6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RestrictedShareUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443b-7c0f-b8c2-1ed856ae0567" xlink:to="loc_ifrs-full_RestrictedShareUnitsMember_019b47d6-443b-7935-8fbb-02d627d241e6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PerformanceBasedRestrictedShareUnitsMember_019b47d6-443b-7a5c-855e-0739b56fc59f" xlink:href="eqx-20251231.xsd#eqx_PerformanceBasedRestrictedShareUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443b-7c0f-b8c2-1ed856ae0567" xlink:to="loc_eqx_PerformanceBasedRestrictedShareUnitsMember_019b47d6-443b-7a5c-855e-0739b56fc59f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_019b47d6-443b-772c-93ae-c5fc9ea24bf9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems_019b47d6-443b-7db1-96b1-9e7e150e99b4" xlink:to="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_019b47d6-443b-772c-93ae-c5fc9ea24bf9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_019b47d6-443b-7dab-901d-0abbd42a331c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems_019b47d6-443b-7db1-96b1-9e7e150e99b4" xlink:to="loc_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_019b47d6-443b-7dab-901d-0abbd42a331c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_019b47d6-443b-7f1a-b70a-ccc667051d42" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems_019b47d6-443b-7db1-96b1-9e7e150e99b4" xlink:to="loc_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_019b47d6-443b-7f1a-b70a-ccc667051d42" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement_019b47d6-443b-72f3-b2fb-311f83252f59" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems_019b47d6-443b-7db1-96b1-9e7e150e99b4" xlink:to="loc_ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement_019b47d6-443b-72f3-b2fb-311f83252f59" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_019b47d6-443b-7ebb-ba03-a6252a5e2f57" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/SHARECAPITALANDSHAREBASEDPAYMENTSScheduleofNumberandWeightedAverageExercisePricesofOtherEquityInstrumentsofCashSettledRSUsOutstandingDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#SHARECAPITALANDSHAREBASEDPAYMENTSScheduleofNumberandWeightedAverageExercisePricesofOtherEquityInstrumentsofCashSettledRSUsOutstandingDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/SHARECAPITALANDSHAREBASEDPAYMENTSScheduleofNumberandWeightedAverageExercisePricesofOtherEquityInstrumentsofCashSettledRSUsOutstandingDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems_019b47d6-443b-7bf0-b028-7fe0901e4fa5" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryTable_019b47d6-443b-76c1-90f7-8f60c38d288b" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems_019b47d6-443b-7bf0-b028-7fe0901e4fa5" xlink:to="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryTable_019b47d6-443b-76c1-90f7-8f60c38d288b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ShareBasedArrangementPlanNameAxis_019b47d6-443b-7111-96a0-5ab63239df97" xlink:href="eqx-20251231.xsd#eqx_ShareBasedArrangementPlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryTable_019b47d6-443b-76c1-90f7-8f60c38d288b" xlink:to="loc_eqx_ShareBasedArrangementPlanNameAxis_019b47d6-443b-7111-96a0-5ab63239df97" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ShareBasedArrangementPlanNameDomain_019b47d6-443b-7111-96a0-5ab63239df97_default" xlink:href="eqx-20251231.xsd#eqx_ShareBasedArrangementPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_eqx_ShareBasedArrangementPlanNameAxis_019b47d6-443b-7111-96a0-5ab63239df97" xlink:to="loc_eqx_ShareBasedArrangementPlanNameDomain_019b47d6-443b-7111-96a0-5ab63239df97_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ShareBasedArrangementPlanNameDomain_019b47d6-443b-7925-87b4-85abc29c3ade" xlink:href="eqx-20251231.xsd#eqx_ShareBasedArrangementPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_eqx_ShareBasedArrangementPlanNameAxis_019b47d6-443b-7111-96a0-5ab63239df97" xlink:to="loc_eqx_ShareBasedArrangementPlanNameDomain_019b47d6-443b-7925-87b4-85abc29c3ade" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EquinoxGoldRestrictedShareUnitPlanMember_019b47d6-443b-7264-8d81-2843a5994871" xlink:href="eqx-20251231.xsd#eqx_EquinoxGoldRestrictedShareUnitPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ShareBasedArrangementPlanNameDomain_019b47d6-443b-7925-87b4-85abc29c3ade" xlink:to="loc_eqx_EquinoxGoldRestrictedShareUnitPlanMember_019b47d6-443b-7264-8d81-2843a5994871" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-443b-731b-be82-5886a5bda32c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryTable_019b47d6-443b-76c1-90f7-8f60c38d288b" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-443b-731b-be82-5886a5bda32c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443b-731b-be82-5886a5bda32c_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-443b-731b-be82-5886a5bda32c" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443b-731b-be82-5886a5bda32c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443b-7069-84d1-2dcb97330420" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-443b-731b-be82-5886a5bda32c" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443b-7069-84d1-2dcb97330420" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CashSettledRestrictedShareUnitsMember_019b47d6-443b-7372-8232-b81bff182800" xlink:href="eqx-20251231.xsd#eqx_CashSettledRestrictedShareUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443b-7069-84d1-2dcb97330420" xlink:to="loc_eqx_CashSettledRestrictedShareUnitsMember_019b47d6-443b-7372-8232-b81bff182800" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CashSettledPerformanceShareUnitsMember_019b47d6-443b-7051-8700-67b690812008" xlink:href="eqx-20251231.xsd#eqx_CashSettledPerformanceShareUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443b-7069-84d1-2dcb97330420" xlink:to="loc_eqx_CashSettledPerformanceShareUnitsMember_019b47d6-443b-7051-8700-67b690812008" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_019b47d6-443c-7ec4-b96b-37f48f1655ce" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems_019b47d6-443b-7bf0-b028-7fe0901e4fa5" xlink:to="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_019b47d6-443c-7ec4-b96b-37f48f1655ce" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_019b47d6-443c-70ab-8aa4-28478ec1d11f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems_019b47d6-443b-7bf0-b028-7fe0901e4fa5" xlink:to="loc_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_019b47d6-443c-70ab-8aa4-28478ec1d11f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NumberOfOtherEquityInstrumentsSettledInShareBasedPaymentArrangement_019b47d6-443c-7871-86eb-4a15e7e19598" xlink:href="eqx-20251231.xsd#eqx_NumberOfOtherEquityInstrumentsSettledInShareBasedPaymentArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems_019b47d6-443b-7bf0-b028-7fe0901e4fa5" xlink:to="loc_eqx_NumberOfOtherEquityInstrumentsSettledInShareBasedPaymentArrangement_019b47d6-443c-7871-86eb-4a15e7e19598" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement_019b47d6-443c-7963-b46a-f55314f59804" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems_019b47d6-443b-7bf0-b028-7fe0901e4fa5" xlink:to="loc_ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement_019b47d6-443c-7963-b46a-f55314f59804" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_019b47d6-443c-7c43-bd83-5cb1d1244036" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/SHARECAPITALANDSHAREBASEDPAYMENTSScheduleofDSUsactivityDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#SHARECAPITALANDSHAREBASEDPAYMENTSScheduleofDSUsactivityDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/SHARECAPITALANDSHAREBASEDPAYMENTSScheduleofDSUsactivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems_019b47d6-443c-7219-8458-d2a8284c0290" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryTable_019b47d6-443c-7f56-8994-c87466d2d6c0" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems_019b47d6-443c-7219-8458-d2a8284c0290" xlink:to="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryTable_019b47d6-443c-7f56-8994-c87466d2d6c0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-443c-7712-8c1a-7d3b668d41e8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryTable_019b47d6-443c-7f56-8994-c87466d2d6c0" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-443c-7712-8c1a-7d3b668d41e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443c-7712-8c1a-7d3b668d41e8_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-443c-7712-8c1a-7d3b668d41e8" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443c-7712-8c1a-7d3b668d41e8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443c-7f81-aed6-201556785ad6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-443c-7712-8c1a-7d3b668d41e8" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443c-7f81-aed6-201556785ad6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DeferredShareUnitsMember_019b47d6-443c-7740-beb7-877036d0c84d" xlink:href="eqx-20251231.xsd#eqx_DeferredShareUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443c-7f81-aed6-201556785ad6" xlink:to="loc_eqx_DeferredShareUnitsMember_019b47d6-443c-7740-beb7-877036d0c84d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_019b47d6-443c-7076-9449-df1489490b6d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems_019b47d6-443c-7219-8458-d2a8284c0290" xlink:to="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_019b47d6-443c-7076-9449-df1489490b6d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_019b47d6-443c-7372-a81f-ae7122ec6252" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems_019b47d6-443c-7219-8458-d2a8284c0290" xlink:to="loc_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_019b47d6-443c-7372-a81f-ae7122ec6252" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NumberOfOtherEquityInstrumentsRedeemedInSharebasedPaymentArrangement_019b47d6-443c-7d84-b957-05b41ba33f85" xlink:href="eqx-20251231.xsd#eqx_NumberOfOtherEquityInstrumentsRedeemedInSharebasedPaymentArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatoryLineItems_019b47d6-443c-7219-8458-d2a8284c0290" xlink:to="loc_eqx_NumberOfOtherEquityInstrumentsRedeemedInSharebasedPaymentArrangement_019b47d6-443c-7d84-b957-05b41ba33f85" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_019b47d6-443c-73e0-9a91-2e704ff73df2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/SHARECAPITALANDSHAREBASEDPAYMENTSScheduleofShareBasedCompensationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#SHARECAPITALANDSHAREBASEDPAYMENTSScheduleofShareBasedCompensationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/SHARECAPITALANDSHAREBASEDPAYMENTSScheduleofShareBasedCompensationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfShareBasedCompensationLineItems_019b47d6-443c-7133-80a5-ed6fb66d2636" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfShareBasedCompensationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfShareBasedCompensationTable_019b47d6-443c-7629-9712-ab8c05630000" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfShareBasedCompensationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DisclosureOfShareBasedCompensationLineItems_019b47d6-443c-7133-80a5-ed6fb66d2636" xlink:to="loc_eqx_DisclosureOfShareBasedCompensationTable_019b47d6-443c-7629-9712-ab8c05630000" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-443c-77a7-bb1a-ee7023047657" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfShareBasedCompensationTable_019b47d6-443c-7629-9712-ab8c05630000" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-443c-77a7-bb1a-ee7023047657" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443c-77a7-bb1a-ee7023047657_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-443c-77a7-bb1a-ee7023047657" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443c-77a7-bb1a-ee7023047657_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443c-7f99-aed1-17516a325894" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b47d6-443c-77a7-bb1a-ee7023047657" xlink:to="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443c-7f99-aed1-17516a325894" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_RestrictedShareUnitsAndPerformanceBasedRestrictedShareUnitsMember_019b47d6-443c-79cd-9689-94600c0e6f9a" xlink:href="eqx-20251231.xsd#eqx_RestrictedShareUnitsAndPerformanceBasedRestrictedShareUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443c-7f99-aed1-17516a325894" xlink:to="loc_eqx_RestrictedShareUnitsAndPerformanceBasedRestrictedShareUnitsMember_019b47d6-443c-79cd-9689-94600c0e6f9a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DeferredShareUnitsMember_019b47d6-443c-7b27-9849-85a88a95265e" xlink:href="eqx-20251231.xsd#eqx_DeferredShareUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443c-7f99-aed1-17516a325894" xlink:to="loc_eqx_DeferredShareUnitsMember_019b47d6-443c-7b27-9849-85a88a95265e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShareOptionsMember_019b9c7c-0e7a-7ee1-84ac-d2685f0f64e6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShareOptionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443c-7f99-aed1-17516a325894" xlink:to="loc_ifrs-full_ShareOptionsMember_019b9c7c-0e7a-7ee1-84ac-d2685f0f64e6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EquitySettledAwardsMember_019b47d6-443c-7f8d-9e77-9a190372158c" xlink:href="eqx-20251231.xsd#eqx_EquitySettledAwardsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443c-7f99-aed1-17516a325894" xlink:to="loc_eqx_EquitySettledAwardsMember_019b47d6-443c-7f8d-9e77-9a190372158c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CashSettledEquityAwardsMember_019b47d6-443c-77e4-870c-09058f36294a" xlink:href="eqx-20251231.xsd#eqx_CashSettledEquityAwardsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b47d6-443c-7f99-aed1-17516a325894" xlink:to="loc_eqx_CashSettledEquityAwardsMember_019b47d6-443c-77e4-870c-09058f36294a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_IncomeStatementLocation1Axis_019b47d6-443c-78e7-8de2-ab0164f96374" xlink:href="eqx-20251231.xsd#eqx_IncomeStatementLocation1Axis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfShareBasedCompensationTable_019b47d6-443c-7629-9712-ab8c05630000" xlink:to="loc_eqx_IncomeStatementLocation1Axis_019b47d6-443c-78e7-8de2-ab0164f96374" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_IncomeStatementLocationMember_019b47d6-443c-78e7-8de2-ab0164f96374_default" xlink:href="eqx-20251231.xsd#eqx_IncomeStatementLocationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_eqx_IncomeStatementLocation1Axis_019b47d6-443c-78e7-8de2-ab0164f96374" xlink:to="loc_eqx_IncomeStatementLocationMember_019b47d6-443c-78e7-8de2-ab0164f96374_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_IncomeStatementLocationMember_019b47d6-443c-7163-a70b-5e2ee9ae98a6" xlink:href="eqx-20251231.xsd#eqx_IncomeStatementLocationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_eqx_IncomeStatementLocation1Axis_019b47d6-443c-78e7-8de2-ab0164f96374" xlink:to="loc_eqx_IncomeStatementLocationMember_019b47d6-443c-7163-a70b-5e2ee9ae98a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GeneralAndAdministrationExpensesMember_019b47d6-443c-78ce-a420-920a7a408fde" xlink:href="eqx-20251231.xsd#eqx_GeneralAndAdministrationExpensesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_IncomeStatementLocationMember_019b47d6-443c-7163-a70b-5e2ee9ae98a6" xlink:to="loc_eqx_GeneralAndAdministrationExpensesMember_019b47d6-443c-78ce-a420-920a7a408fde" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_OperatingExpensesMember_019b47d6-443c-7660-a8c1-e4ef4399cf74" xlink:href="eqx-20251231.xsd#eqx_OperatingExpensesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_IncomeStatementLocationMember_019b47d6-443c-7163-a70b-5e2ee9ae98a6" xlink:to="loc_eqx_OperatingExpensesMember_019b47d6-443c-7660-a8c1-e4ef4399cf74" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CareAndMaintenanceExpenseMember_019d1c3d-8b9e-7887-90ad-73dadbd14fa8" xlink:href="eqx-20251231.xsd#eqx_CareAndMaintenanceExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_IncomeStatementLocationMember_019b47d6-443c-7163-a70b-5e2ee9ae98a6" xlink:to="loc_eqx_CareAndMaintenanceExpenseMember_019d1c3d-8b9e-7887-90ad-73dadbd14fa8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BalanceSheetLocation1Axis_019b47d6-443c-74ff-b6c8-8946e8179132" xlink:href="eqx-20251231.xsd#eqx_BalanceSheetLocation1Axis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfShareBasedCompensationTable_019b47d6-443c-7629-9712-ab8c05630000" xlink:to="loc_eqx_BalanceSheetLocation1Axis_019b47d6-443c-74ff-b6c8-8946e8179132" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BalanceSheetLocation1Domain_019b47d6-443c-74ff-b6c8-8946e8179132_default" xlink:href="eqx-20251231.xsd#eqx_BalanceSheetLocation1Domain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_eqx_BalanceSheetLocation1Axis_019b47d6-443c-74ff-b6c8-8946e8179132" xlink:to="loc_eqx_BalanceSheetLocation1Domain_019b47d6-443c-74ff-b6c8-8946e8179132_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BalanceSheetLocation1Domain_019b47d6-443c-761c-adb1-bb66e0289b18" xlink:href="eqx-20251231.xsd#eqx_BalanceSheetLocation1Domain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_eqx_BalanceSheetLocation1Axis_019b47d6-443c-74ff-b6c8-8946e8179132" xlink:to="loc_eqx_BalanceSheetLocation1Domain_019b47d6-443c-761c-adb1-bb66e0289b18" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ConstructionInProgressMember_019b47d6-443c-7576-90d9-d44e88778bb3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ConstructionInProgressMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_BalanceSheetLocation1Domain_019b47d6-443c-761c-adb1-bb66e0289b18" xlink:to="loc_ifrs-full_ConstructionInProgressMember_019b47d6-443c-7576-90d9-d44e88778bb3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NonCashExpenseFromShareBasedCompensation_019b47d6-443c-7226-9c06-f103cd7c58ad" xlink:href="eqx-20251231.xsd#eqx_NonCashExpenseFromShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfShareBasedCompensationLineItems_019b47d6-443c-7133-80a5-ed6fb66d2636" xlink:to="loc_eqx_NonCashExpenseFromShareBasedCompensation_019b47d6-443c-7226-9c06-f103cd7c58ad" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/RESERVESDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#RESERVESDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/RESERVESDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_019b47d6-443c-71ae-ac38-435a258cd9c9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfReservesWithinEquityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_019b47d6-443c-7236-aeea-5f8c9a73df08" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfReservesWithinEquityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_019b47d6-443c-71ae-ac38-435a258cd9c9" xlink:to="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_019b47d6-443c-7236-aeea-5f8c9a73df08" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComponentsOfEquityAxis_019b47d6-443c-758c-b333-fbfac00d7186" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityTable_019b47d6-443c-7236-aeea-5f8c9a73df08" xlink:to="loc_ifrs-full_ComponentsOfEquityAxis_019b47d6-443c-758c-b333-fbfac00d7186" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComponentsOfEquityDomain_019b47d6-443c-758c-b333-fbfac00d7186_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ComponentsOfEquityAxis_019b47d6-443c-758c-b333-fbfac00d7186" xlink:to="loc_ifrs-full_ComponentsOfEquityDomain_019b47d6-443c-758c-b333-fbfac00d7186_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComponentsOfEquityDomain_019b47d6-443c-7bc8-be73-a820e79b4910" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ComponentsOfEquityAxis_019b47d6-443c-758c-b333-fbfac00d7186" xlink:to="loc_ifrs-full_ComponentsOfEquityDomain_019b47d6-443c-7bc8-be73-a820e79b4910" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherReservesMember_019b47d6-443c-738b-a64f-029e2a91b287" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherReservesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ComponentsOfEquityDomain_019b47d6-443c-7bc8-be73-a820e79b4910" xlink:to="loc_ifrs-full_OtherReservesMember_019b47d6-443c-738b-a64f-029e2a91b287" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfSharebasedPaymentsMember_019b47d6-443c-71a7-b486-252d852c98b5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReserveOfSharebasedPaymentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_OtherReservesMember_019b47d6-443c-738b-a64f-029e2a91b287" xlink:to="loc_ifrs-full_ReserveOfSharebasedPaymentsMember_019b47d6-443c-71a7-b486-252d852c98b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfEquityComponentOfConvertibleInstrumentsMember_019b47d6-443c-79f7-a00c-3c0092b14af1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReserveOfEquityComponentOfConvertibleInstrumentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_OtherReservesMember_019b47d6-443c-738b-a64f-029e2a91b287" xlink:to="loc_ifrs-full_ReserveOfEquityComponentOfConvertibleInstrumentsMember_019b47d6-443c-79f7-a00c-3c0092b14af1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MiscellaneousOtherReservesMember_019b47d6-443c-795d-a5cc-f7a075e41f13" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MiscellaneousOtherReservesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_OtherReservesMember_019b47d6-443c-738b-a64f-029e2a91b287" xlink:to="loc_ifrs-full_MiscellaneousOtherReservesMember_019b47d6-443c-795d-a5cc-f7a075e41f13" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MovementOfReservesOfEquityRollForward_019b47d6-443c-7858-8b2d-2ef95c9e48e1" xlink:href="eqx-20251231.xsd#eqx_MovementOfReservesOfEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfReservesWithinEquityLineItems_019b47d6-443c-71ae-ac38-435a258cd9c9" xlink:to="loc_eqx_MovementOfReservesOfEquityRollForward_019b47d6-443c-7858-8b2d-2ef95c9e48e1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity_019b47d6-443c-781c-b0e6-f3dca0ccafc6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Equity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_MovementOfReservesOfEquityRollForward_019b47d6-443c-7858-8b2d-2ef95c9e48e1" xlink:to="loc_ifrs-full_Equity_019b47d6-443c-781c-b0e6-f3dca0ccafc6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShareIssueRelatedCost_019b9c43-93b6-7c8f-a7d5-0a7cf1b385b1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShareIssueRelatedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_MovementOfReservesOfEquityRollForward_019b47d6-443c-7858-8b2d-2ef95c9e48e1" xlink:to="loc_ifrs-full_ShareIssueRelatedCost_019b9c43-93b6-7c8f-a7d5-0a7cf1b385b1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ConversionOfConvertibleNotes_019b47d6-443c-7d29-86ed-9ddf09d8d841" xlink:href="eqx-20251231.xsd#eqx_ConversionOfConvertibleNotes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_MovementOfReservesOfEquityRollForward_019b47d6-443c-7858-8b2d-2ef95c9e48e1" xlink:to="loc_eqx_ConversionOfConvertibleNotes_019b47d6-443c-7d29-86ed-9ddf09d8d841" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SharesIssuedOnExerciseOfWarrantsStockOptionsAndRsus_019b47d6-443c-7751-8dd5-ac8a1ea55a18" xlink:href="eqx-20251231.xsd#eqx_SharesIssuedOnExerciseOfWarrantsStockOptionsAndRsus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_MovementOfReservesOfEquityRollForward_019b47d6-443c-7858-8b2d-2ef95c9e48e1" xlink:to="loc_eqx_SharesIssuedOnExerciseOfWarrantsStockOptionsAndRsus_019b47d6-443c-7751-8dd5-ac8a1ea55a18" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_019b47d6-443c-7dfc-b67d-2a13c63c3f50" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_MovementOfReservesOfEquityRollForward_019b47d6-443c-7858-8b2d-2ef95c9e48e1" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_019b47d6-443c-7dfc-b67d-2a13c63c3f50" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IssueOfConvertibleInstruments_019b47d6-443c-73da-ab8d-181d76780cd2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IssueOfConvertibleInstruments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_MovementOfReservesOfEquityRollForward_019b47d6-443c-7858-8b2d-2ef95c9e48e1" xlink:to="loc_ifrs-full_IssueOfConvertibleInstruments_019b47d6-443c-73da-ab8d-181d76780cd2" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity_019b47d6-443c-7552-99c3-d6cfcb44886c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Equity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/REVENUEDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#REVENUEDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/REVENUEDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_019b47d6-443c-7d5d-95e8-f4992e07187a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable_019b47d6-443c-7cdc-9506-19b3ff0930ed" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_019b47d6-443c-7d5d-95e8-f4992e07187a" xlink:to="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable_019b47d6-443c-7cdc-9506-19b3ff0930ed" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProductsAndServicesAxis_019b47d6-443c-7c65-bec7-17a4876de342" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProductsAndServicesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable_019b47d6-443c-7cdc-9506-19b3ff0930ed" xlink:to="loc_ifrs-full_ProductsAndServicesAxis_019b47d6-443c-7c65-bec7-17a4876de342" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProductsAndServicesDomain_019b47d6-443c-7c65-bec7-17a4876de342_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ProductsAndServicesAxis_019b47d6-443c-7c65-bec7-17a4876de342" xlink:to="loc_ifrs-full_ProductsAndServicesDomain_019b47d6-443c-7c65-bec7-17a4876de342_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProductsAndServicesDomain_019b47d6-443c-7197-a3f2-9d369a6fa9f6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ProductsAndServicesAxis_019b47d6-443c-7c65-bec7-17a4876de342" xlink:to="loc_ifrs-full_ProductsAndServicesDomain_019b47d6-443c-7197-a3f2-9d369a6fa9f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_Gold1Member_019b47d6-443c-75ab-aa7f-ca79b8a7d2bc" xlink:href="eqx-20251231.xsd#eqx_Gold1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ProductsAndServicesDomain_019b47d6-443c-7197-a3f2-9d369a6fa9f6" xlink:to="loc_eqx_Gold1Member_019b47d6-443c-75ab-aa7f-ca79b8a7d2bc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SilverMember_019b47d6-443c-76b2-8c10-4e8be33823e9" xlink:href="eqx-20251231.xsd#eqx_SilverMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ProductsAndServicesDomain_019b47d6-443c-7197-a3f2-9d369a6fa9f6" xlink:to="loc_eqx_SilverMember_019b47d6-443c-76b2-8c10-4e8be33823e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RevenueFromContractsWithCustomers_019b47d6-443c-7698-9b6f-5e6fd7fcbaeb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevenueFromContractsWithCustomers"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_019b47d6-443c-7d5d-95e8-f4992e07187a" xlink:to="loc_ifrs-full_RevenueFromContractsWithCustomers_019b47d6-443c-7698-9b6f-5e6fd7fcbaeb" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/INCOMETAXESAdditionalInformationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#INCOMETAXESAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/INCOMETAXESAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c375a-d6aa-740f-ba03-505eb30ae470" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeTable_019c375a-d6aa-732f-9656-717373c7e191" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c375a-d6aa-740f-ba03-505eb30ae470" xlink:to="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeTable_019c375a-d6aa-732f-9656-717373c7e191" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019c375c-4368-7472-b28a-668e59e6ef14" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeTable_019c375a-d6aa-732f-9656-717373c7e191" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019c375c-4368-7472-b28a-668e59e6ef14" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019c375c-4368-7472-b28a-668e59e6ef14_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019c375c-4368-7472-b28a-668e59e6ef14" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019c375c-4368-7472-b28a-668e59e6ef14_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019c375c-4368-74e9-a771-a221a0b536d3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019c375c-4368-7472-b28a-668e59e6ef14" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019c375c-4368-74e9-a771-a221a0b536d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NewmontCorporationMember_019c375a-d6aa-7b6a-be07-e4e7d45461ec" xlink:href="eqx-20251231.xsd#eqx_NewmontCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019c375c-4368-74e9-a771-a221a0b536d3" xlink:to="loc_eqx_NewmontCorporationMember_019c375a-d6aa-7b6a-be07-e4e7d45461ec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CalibreAcquisitionMember_019c375c-4368-7741-8828-92067b791960" xlink:href="eqx-20251231.xsd#eqx_CalibreAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019c375c-4368-74e9-a771-a221a0b536d3" xlink:to="loc_eqx_CalibreAcquisitionMember_019c375c-4368-7741-8828-92067b791960" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GeographicalAreasAxis_019c375c-4368-759b-a8d4-96249ee96f52" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeTable_019c375a-d6aa-732f-9656-717373c7e191" xlink:to="loc_ifrs-full_GeographicalAreasAxis_019c375c-4368-759b-a8d4-96249ee96f52" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GeographicalAreasDomain_019c375c-4368-759b-a8d4-96249ee96f52_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_GeographicalAreasAxis_019c375c-4368-759b-a8d4-96249ee96f52" xlink:to="loc_ifrs-full_GeographicalAreasDomain_019c375c-4368-759b-a8d4-96249ee96f52_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GeographicalAreasDomain_019c375c-4368-76a3-84a4-2bcf571bb5d2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_GeographicalAreasAxis_019c375c-4368-759b-a8d4-96249ee96f52" xlink:to="loc_ifrs-full_GeographicalAreasDomain_019c375c-4368-76a3-84a4-2bcf571bb5d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_NI_019c375c-4368-7f1b-b3cd-23605bb71290" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_NI"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_GeographicalAreasDomain_019c375c-4368-76a3-84a4-2bcf571bb5d2" xlink:to="loc_country_NI_019c375c-4368-7f1b-b3cd-23605bb71290" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ApplicableTaxRate_019b47d6-443c-7639-b9ac-ffea08c1c222" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ApplicableTaxRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c375a-d6aa-740f-ba03-505eb30ae470" xlink:to="loc_ifrs-full_ApplicableTaxRate_019b47d6-443c-7639-b9ac-ffea08c1c222" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentTaxExpenseIncomeRelatedToPillarTwoIncomeTaxes_019b47d6-443c-768b-959c-66920524a6fa" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentTaxExpenseIncomeRelatedToPillarTwoIncomeTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c375a-d6aa-740f-ba03-505eb30ae470" xlink:to="loc_ifrs-full_CurrentTaxExpenseIncomeRelatedToPillarTwoIncomeTaxes_019b47d6-443c-768b-959c-66920524a6fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CurrentTaxExpenseIncomeAndAdditionalIncomeTaxPreviouslyAssessed_019c375a-b436-7db3-a3fa-f683cd551048" xlink:href="eqx-20251231.xsd#eqx_CurrentTaxExpenseIncomeAndAdditionalIncomeTaxPreviouslyAssessed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c375a-d6aa-740f-ba03-505eb30ae470" xlink:to="loc_eqx_CurrentTaxExpenseIncomeAndAdditionalIncomeTaxPreviouslyAssessed_019c375a-b436-7db3-a3fa-f683cd551048" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CurrentTaxExpenseIncomeAndAdditionalIncomeTaxPreviouslyAssessedAmountPaid_019d1c9a-68e5-75bb-a559-72343c86a3fe" xlink:href="eqx-20251231.xsd#eqx_CurrentTaxExpenseIncomeAndAdditionalIncomeTaxPreviouslyAssessedAmountPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c375a-d6aa-740f-ba03-505eb30ae470" xlink:to="loc_eqx_CurrentTaxExpenseIncomeAndAdditionalIncomeTaxPreviouslyAssessedAmountPaid_019d1c9a-68e5-75bb-a559-72343c86a3fe" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EstimatedIndemnityClaimAdditionalIncomeTaxPreviouslyAssessed_019c375a-b436-79ed-be1d-79cb194a08b1" xlink:href="eqx-20251231.xsd#eqx_EstimatedIndemnityClaimAdditionalIncomeTaxPreviouslyAssessed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c375a-d6aa-740f-ba03-505eb30ae470" xlink:to="loc_eqx_EstimatedIndemnityClaimAdditionalIncomeTaxPreviouslyAssessed_019c375a-b436-79ed-be1d-79cb194a08b1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CurrentTaxExpenseNetOfIndemnificationAssetRecognizedForAuditSettlement_019c4893-51fd-79d0-a07f-4a786181c3eb" xlink:href="eqx-20251231.xsd#eqx_CurrentTaxExpenseNetOfIndemnificationAssetRecognizedForAuditSettlement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c375a-d6aa-740f-ba03-505eb30ae470" xlink:to="loc_eqx_CurrentTaxExpenseNetOfIndemnificationAssetRecognizedForAuditSettlement_019c4893-51fd-79d0-a07f-4a786181c3eb" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_FairValueOfTaxObligationAcquired_019c375c-4368-7f24-95d3-fc0c7f4fbab1" xlink:href="eqx-20251231.xsd#eqx_FairValueOfTaxObligationAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c375a-d6aa-740f-ba03-505eb30ae470" xlink:to="loc_eqx_FairValueOfTaxObligationAcquired_019c375c-4368-7f24-95d3-fc0c7f4fbab1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SettlementAgreementTaxObligationPayable_019c375c-4368-76ee-ad9f-d839dc826907" xlink:href="eqx-20251231.xsd#eqx_SettlementAgreementTaxObligationPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c375a-d6aa-740f-ba03-505eb30ae470" xlink:to="loc_eqx_SettlementAgreementTaxObligationPayable_019c375c-4368-76ee-ad9f-d839dc826907" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SettlementAgreementInterestAndPenalties_019c375c-4368-7a64-a120-b3a97b436e5e" xlink:href="eqx-20251231.xsd#eqx_SettlementAgreementInterestAndPenalties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c375a-d6aa-740f-ba03-505eb30ae470" xlink:to="loc_eqx_SettlementAgreementInterestAndPenalties_019c375c-4368-7a64-a120-b3a97b436e5e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PaymentsForIncomeTaxSettlementAgreement_019c375c-4368-7c38-86e8-fb7981548468" xlink:href="eqx-20251231.xsd#eqx_PaymentsForIncomeTaxSettlementAgreement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c375a-d6aa-740f-ba03-505eb30ae470" xlink:to="loc_eqx_PaymentsForIncomeTaxSettlementAgreement_019c375c-4368-7c38-86e8-fb7981548468" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/INCOMETAXESScheduleofDeferredTaxAssetsandLiabilitiesExplanatoryDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#INCOMETAXESScheduleofDeferredTaxAssetsandLiabilitiesExplanatoryDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/INCOMETAXESScheduleofDeferredTaxAssetsandLiabilitiesExplanatoryDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019b9cab-7338-7756-bd16-ac395576fdc1" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeTable_019b9cab-7338-752e-9222-492d86fc7960" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019b9cab-7338-7756-bd16-ac395576fdc1" xlink:to="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeTable_019b9cab-7338-752e-9222-492d86fc7960" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019b9cab-7338-7b9f-9f4b-0bbe24454bd8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeTable_019b9cab-7338-752e-9222-492d86fc7960" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019b9cab-7338-7b9f-9f4b-0bbe24454bd8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9cab-7338-7b9f-9f4b-0bbe24454bd8_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9cab-7338-7b9f-9f4b-0bbe24454bd8" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9cab-7338-7b9f-9f4b-0bbe24454bd8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019b9cab-7338-744c-ae48-a4a68e4ebabe" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019b9cab-7338-7b9f-9f4b-0bbe24454bd8" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019b9cab-7338-744c-ae48-a4a68e4ebabe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CalibreAcquisitionMember_019b9cab-7338-75c6-9e8d-bd6a63a8adf9" xlink:href="eqx-20251231.xsd#eqx_CalibreAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b9cab-7338-744c-ae48-a4a68e4ebabe" xlink:to="loc_eqx_CalibreAcquisitionMember_019b9cab-7338-75c6-9e8d-bd6a63a8adf9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneAcquisitionMember_019b9cab-7338-7de7-832c-16609895b3dd" xlink:href="eqx-20251231.xsd#eqx_GreenstoneAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019b9cab-7338-744c-ae48-a4a68e4ebabe" xlink:to="loc_eqx_GreenstoneAcquisitionMember_019b9cab-7338-7de7-832c-16609895b3dd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DeferredTaxLiabilityAsset_019b47d6-443c-785f-956d-475d38a0e96a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DeferredTaxLiabilityAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019b9cab-7338-7756-bd16-ac395576fdc1" xlink:to="loc_ifrs-full_DeferredTaxLiabilityAsset_019b47d6-443c-785f-956d-475d38a0e96a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughBusinessCombinationsDeferredTaxLiabilityAsset_019b47d6-45f6-7131-8131-b3cba754b8f3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughBusinessCombinationsDeferredTaxLiabilityAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019b9cab-7338-7756-bd16-ac395576fdc1" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughBusinessCombinationsDeferredTaxLiabilityAsset_019b47d6-45f6-7131-8131-b3cba754b8f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DeferredTaxExpenseIncomeFromContinuingOperations_019b47d6-45f6-7356-afd5-be3c420adeb3" xlink:href="eqx-20251231.xsd#eqx_DeferredTaxExpenseIncomeFromContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019b9cab-7338-7756-bd16-ac395576fdc1" xlink:to="loc_eqx_DeferredTaxExpenseIncomeFromContinuingOperations_019b47d6-45f6-7356-afd5-be3c420adeb3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DeferredTaxExpenseIncomeFromDiscontinuingOperations_019bff46-b658-75c4-a576-f27454b1f3ef" xlink:href="eqx-20251231.xsd#eqx_DeferredTaxExpenseIncomeFromDiscontinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019b9cab-7338-7756-bd16-ac395576fdc1" xlink:to="loc_eqx_DeferredTaxExpenseIncomeFromDiscontinuingOperations_019bff46-b658-75c4-a576-f27454b1f3ef" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome_019b47d6-45f6-760a-90a7-c7eb0726b2b8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019b9cab-7338-7756-bd16-ac395576fdc1" xlink:to="loc_ifrs-full_IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome_019b47d6-45f6-760a-90a7-c7eb0726b2b8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity_019b47d6-45f6-7106-a21f-5e805aef14e1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019b9cab-7338-7756-bd16-ac395576fdc1" xlink:to="loc_ifrs-full_DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity_019b47d6-45f6-7106-a21f-5e805aef14e1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughLossOfControlOfSubsidiaryDeferredTaxLiabilityAsset_019bff3a-fec8-79e9-847b-0adc872d3c48" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughLossOfControlOfSubsidiaryDeferredTaxLiabilityAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019b9cab-7338-7756-bd16-ac395576fdc1" xlink:to="loc_ifrs-full_IncreaseDecreaseThroughLossOfControlOfSubsidiaryDeferredTaxLiabilityAsset_019bff3a-fec8-79e9-847b-0adc872d3c48" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ReclassifiedToAssetsAndLiabilitiesRelatingToAssetsHeldForSale_019bff41-7bc1-751a-b8a7-a23f276b2b7b" xlink:href="eqx-20251231.xsd#eqx_ReclassifiedToAssetsAndLiabilitiesRelatingToAssetsHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019b9cab-7338-7756-bd16-ac395576fdc1" xlink:to="loc_eqx_ReclassifiedToAssetsAndLiabilitiesRelatingToAssetsHeldForSale_019bff41-7bc1-751a-b8a7-a23f276b2b7b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DeferredTaxLiabilityAsset_019b47d6-45f6-7261-b22e-c8ad77333353" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DeferredTaxLiabilityAsset"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/INCOMETAXESScheduleofDetailedInformationaboutDeductibleTemporaryDifferencesUnusedTaxLossesandUnusedTaxCreditsForWhichDeferredIncomeTaxAssetsNotRecognizedDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#INCOMETAXESScheduleofDetailedInformationaboutDeductibleTemporaryDifferencesUnusedTaxLossesandUnusedTaxCreditsForWhichDeferredIncomeTaxAssetsNotRecognizedDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/INCOMETAXESScheduleofDetailedInformationaboutDeductibleTemporaryDifferencesUnusedTaxLossesandUnusedTaxCreditsForWhichDeferredIncomeTaxAssetsNotRecognizedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c3754-1aa0-7446-8d0d-283ea81ccd9a" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeTable_019c3754-1aa0-7e3a-9869-f019ea73055e" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c3754-1aa0-7446-8d0d-283ea81ccd9a" xlink:to="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeTable_019c3754-1aa0-7e3a-9869-f019ea73055e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GeographicalAreasAxis_019c3754-1aa0-76eb-9eec-d5fec8445d5b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeTable_019c3754-1aa0-7e3a-9869-f019ea73055e" xlink:to="loc_ifrs-full_GeographicalAreasAxis_019c3754-1aa0-76eb-9eec-d5fec8445d5b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GeographicalAreasDomain_019c3754-1aa0-76eb-9eec-d5fec8445d5b_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_GeographicalAreasAxis_019c3754-1aa0-76eb-9eec-d5fec8445d5b" xlink:to="loc_ifrs-full_GeographicalAreasDomain_019c3754-1aa0-76eb-9eec-d5fec8445d5b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GeographicalAreasDomain_019c3754-1aa0-7edd-8c66-e81af90477fb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_GeographicalAreasAxis_019c3754-1aa0-76eb-9eec-d5fec8445d5b" xlink:to="loc_ifrs-full_GeographicalAreasDomain_019c3754-1aa0-7edd-8c66-e81af90477fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_BR_019c3754-1aa0-71dd-b6d4-d5978a5fcf7f" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_BR"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_GeographicalAreasDomain_019c3754-1aa0-7edd-8c66-e81af90477fb" xlink:to="loc_country_BR_019c3754-1aa0-71dd-b6d4-d5978a5fcf7f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_UnrecognizedSuspendedInterestDeductionDeferredTaxAsset_019b47d6-45f6-7082-a1c8-500fb8711c7e" xlink:href="eqx-20251231.xsd#eqx_UnrecognizedSuspendedInterestDeductionDeferredTaxAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c3754-1aa0-7446-8d0d-283ea81ccd9a" xlink:to="loc_eqx_UnrecognizedSuspendedInterestDeductionDeferredTaxAsset_019b47d6-45f6-7082-a1c8-500fb8711c7e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_UnrecognizedDerivativesDeferredTaxAsset_019b47d6-45f6-7764-8195-ea4341aca26a" xlink:href="eqx-20251231.xsd#eqx_UnrecognizedDerivativesDeferredTaxAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c3754-1aa0-7446-8d0d-283ea81ccd9a" xlink:to="loc_eqx_UnrecognizedDerivativesDeferredTaxAsset_019b47d6-45f6-7764-8195-ea4341aca26a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_UnrecognizedReclamationObligationDeferredTaxAsset_019b47d6-45f6-784a-b244-c883beea6799" xlink:href="eqx-20251231.xsd#eqx_UnrecognizedReclamationObligationDeferredTaxAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c3754-1aa0-7446-8d0d-283ea81ccd9a" xlink:to="loc_eqx_UnrecognizedReclamationObligationDeferredTaxAsset_019b47d6-45f6-784a-b244-c883beea6799" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_UnrecognizedMineralPropertiesPlantAndEquipmentDeferredTaxAsset_019b47d6-45f6-78a7-a6a7-792f76d2b637" xlink:href="eqx-20251231.xsd#eqx_UnrecognizedMineralPropertiesPlantAndEquipmentDeferredTaxAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c3754-1aa0-7446-8d0d-283ea81ccd9a" xlink:to="loc_eqx_UnrecognizedMineralPropertiesPlantAndEquipmentDeferredTaxAsset_019b47d6-45f6-78a7-a6a7-792f76d2b637" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_UnrecognizedInvestmentsAndLoansAndBorrowingsDeferredTaxAsset_019b47d6-45f6-7950-b184-6e1e11729b42" xlink:href="eqx-20251231.xsd#eqx_UnrecognizedInvestmentsAndLoansAndBorrowingsDeferredTaxAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c3754-1aa0-7446-8d0d-283ea81ccd9a" xlink:to="loc_eqx_UnrecognizedInvestmentsAndLoansAndBorrowingsDeferredTaxAsset_019b47d6-45f6-7950-b184-6e1e11729b42" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_UnrecognizedAccruedReceivablesAndLiabilitiesDeferredTaxAsset_019b47d6-45f6-7e7b-8b00-bc40666b7cbe" xlink:href="eqx-20251231.xsd#eqx_UnrecognizedAccruedReceivablesAndLiabilitiesDeferredTaxAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c3754-1aa0-7446-8d0d-283ea81ccd9a" xlink:to="loc_eqx_UnrecognizedAccruedReceivablesAndLiabilitiesDeferredTaxAsset_019b47d6-45f6-7e7b-8b00-bc40666b7cbe" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_UnrecognizedOtherDeferredTaxAsset_019b47d6-45f6-715d-8f8f-6e6d31683be8" xlink:href="eqx-20251231.xsd#eqx_UnrecognizedOtherDeferredTaxAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c3754-1aa0-7446-8d0d-283ea81ccd9a" xlink:to="loc_eqx_UnrecognizedOtherDeferredTaxAsset_019b47d6-45f6-715d-8f8f-6e6d31683be8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_UnrecognizedNoncapitalLossesDeferredTaxAsset_019b47d6-45f6-7287-9092-db65fd410957" xlink:href="eqx-20251231.xsd#eqx_UnrecognizedNoncapitalLossesDeferredTaxAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c3754-1aa0-7446-8d0d-283ea81ccd9a" xlink:to="loc_eqx_UnrecognizedNoncapitalLossesDeferredTaxAsset_019b47d6-45f6-7287-9092-db65fd410957" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_UnrecognizedCapitalLossesDeferredTaxAsset_019b47d6-45f6-7981-869d-51b4ab6ed5ce" xlink:href="eqx-20251231.xsd#eqx_UnrecognizedCapitalLossesDeferredTaxAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c3754-1aa0-7446-8d0d-283ea81ccd9a" xlink:to="loc_eqx_UnrecognizedCapitalLossesDeferredTaxAsset_019b47d6-45f6-7981-869d-51b4ab6ed5ce" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AdjustmentsForDeferredTaxAssets_019b47d6-45f6-7581-aa0c-9c219ecd3cc7" xlink:href="eqx-20251231.xsd#eqx_AdjustmentsForDeferredTaxAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019c3754-1aa0-7446-8d0d-283ea81ccd9a" xlink:to="loc_eqx_AdjustmentsForDeferredTaxAssets_019b47d6-45f6-7581-aa0c-9c219ecd3cc7" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/INCOMETAXESScheduleofDetailedInformationaboutNonCapitalLossAppliedtoReduceFutureTaxableIncomeDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#INCOMETAXESScheduleofDetailedInformationaboutNonCapitalLossAppliedtoReduceFutureTaxableIncomeDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/INCOMETAXESScheduleofDetailedInformationaboutNonCapitalLossAppliedtoReduceFutureTaxableIncomeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019b47d6-45f6-73b1-a0e0-532695002e2d" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeTable_019b47d6-45f6-7dee-9428-4ba61758ac84" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019b47d6-45f6-73b1-a0e0-532695002e2d" xlink:to="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeTable_019b47d6-45f6-7dee-9428-4ba61758ac84" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GeographicalAreasAxis_019b47d6-45f6-7d65-9db7-2f43f79b5d1b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeTable_019b47d6-45f6-7dee-9428-4ba61758ac84" xlink:to="loc_ifrs-full_GeographicalAreasAxis_019b47d6-45f6-7d65-9db7-2f43f79b5d1b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GeographicalAreasDomain_019b47d6-45f6-7d65-9db7-2f43f79b5d1b_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_GeographicalAreasAxis_019b47d6-45f6-7d65-9db7-2f43f79b5d1b" xlink:to="loc_ifrs-full_GeographicalAreasDomain_019b47d6-45f6-7d65-9db7-2f43f79b5d1b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GeographicalAreasDomain_019b47d6-45f6-71b6-83e8-2ac94a7c1fbc" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_GeographicalAreasAxis_019b47d6-45f6-7d65-9db7-2f43f79b5d1b" xlink:to="loc_ifrs-full_GeographicalAreasDomain_019b47d6-45f6-71b6-83e8-2ac94a7c1fbc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CA_019b47d6-45f6-7950-be61-8dc88139c0c9" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_GeographicalAreasDomain_019b47d6-45f6-71b6-83e8-2ac94a7c1fbc" xlink:to="loc_country_CA_019b47d6-45f6-7950-be61-8dc88139c0c9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_019b47d6-45f6-7bf0-9544-4cd2a2872605" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_GeographicalAreasDomain_019b47d6-45f6-71b6-83e8-2ac94a7c1fbc" xlink:to="loc_country_US_019b47d6-45f6-7bf0-9544-4cd2a2872605" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_MX_019b47d6-45f6-77e2-be81-9fb0b7c2480d" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_MX"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_GeographicalAreasDomain_019b47d6-45f6-71b6-83e8-2ac94a7c1fbc" xlink:to="loc_country_MX_019b47d6-45f6-77e2-be81-9fb0b7c2480d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_OtherCountryMember_019b47d6-45f6-7095-96d6-2c849201d3c6" xlink:href="eqx-20251231.xsd#eqx_OtherCountryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_GeographicalAreasDomain_019b47d6-45f6-71b6-83e8-2ac94a7c1fbc" xlink:to="loc_eqx_OtherCountryMember_019b47d6-45f6-7095-96d6-2c849201d3c6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NonCapitalLossCarryforwards_019b47d6-45f6-771a-b5bb-bbdcf17de4e7" xlink:href="eqx-20251231.xsd#eqx_NonCapitalLossCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfDetailedInformationAboutNonCapitalLossAppliedToReduceFutureTaxableIncomeLineItems_019b47d6-45f6-73b1-a0e0-532695002e2d" xlink:to="loc_eqx_NonCapitalLossCarryforwards_019b47d6-45f6-771a-b5bb-bbdcf17de4e7" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/NETLOSSINCOMEPERSHAREAdditionalInformationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#NETLOSSINCOMEPERSHAREAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/NETLOSSINCOMEPERSHAREAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfInstrumentsWithPotentialFutureDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShareLineItems_019b47d6-45f6-77dd-85be-104a239c7dee" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfInstrumentsWithPotentialFutureDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfInstrumentsWithPotentialFutureDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShareTable_019b47d6-45f6-7f6e-b9fc-005971f45890" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfInstrumentsWithPotentialFutureDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfInstrumentsWithPotentialFutureDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShareLineItems_019b47d6-45f6-77dd-85be-104a239c7dee" xlink:to="loc_ifrs-full_DisclosureOfInstrumentsWithPotentialFutureDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShareTable_019b47d6-45f6-7f6e-b9fc-005971f45890" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfAntidilutiveInstrumentsAxis_019b47d6-45f6-7f04-9db2-b7e75d4fc033" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfAntidilutiveInstrumentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfInstrumentsWithPotentialFutureDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShareTable_019b47d6-45f6-7f6e-b9fc-005971f45890" xlink:to="loc_ifrs-full_TypesOfAntidilutiveInstrumentsAxis_019b47d6-45f6-7f04-9db2-b7e75d4fc033" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfAntidilutiveInstrumentsDomain_019b47d6-45f6-7f04-9db2-b7e75d4fc033_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfAntidilutiveInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfAntidilutiveInstrumentsAxis_019b47d6-45f6-7f04-9db2-b7e75d4fc033" xlink:to="loc_ifrs-full_TypesOfAntidilutiveInstrumentsDomain_019b47d6-45f6-7f04-9db2-b7e75d4fc033_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfAntidilutiveInstrumentsDomain_019b47d6-45f6-7925-bfda-f11d6c2e4550" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfAntidilutiveInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfAntidilutiveInstrumentsAxis_019b47d6-45f6-7f04-9db2-b7e75d4fc033" xlink:to="loc_ifrs-full_TypesOfAntidilutiveInstrumentsDomain_019b47d6-45f6-7925-bfda-f11d6c2e4550" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ConvertibleInstrumentsMember_019b47d6-45f6-7c68-9ebf-25aef5a48fa5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ConvertibleInstrumentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfAntidilutiveInstrumentsDomain_019b47d6-45f6-7925-bfda-f11d6c2e4550" xlink:to="loc_ifrs-full_ConvertibleInstrumentsMember_019b47d6-45f6-7c68-9ebf-25aef5a48fa5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShareOptionsMember_019b47d6-45f6-7fd9-87b7-4bfa2230aa32" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShareOptionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfAntidilutiveInstrumentsDomain_019b47d6-45f6-7925-bfda-f11d6c2e4550" xlink:to="loc_ifrs-full_ShareOptionsMember_019b47d6-45f6-7fd9-87b7-4bfa2230aa32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SharePurchaseWarrantsMember_019b9c0b-08a9-7c24-9ccd-58bb4721591d" xlink:href="eqx-20251231.xsd#eqx_SharePurchaseWarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfAntidilutiveInstrumentsDomain_019b47d6-45f6-7925-bfda-f11d6c2e4550" xlink:to="loc_eqx_SharePurchaseWarrantsMember_019b9c0b-08a9-7c24-9ccd-58bb4721591d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_RestrictedShareUnitsRSUsAndPerformanceShareUnitsPRSUsMember_019c4859-bc2c-724b-ac38-b1ac4f66bde2" xlink:href="eqx-20251231.xsd#eqx_RestrictedShareUnitsRSUsAndPerformanceShareUnitsPRSUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfAntidilutiveInstrumentsDomain_019b47d6-45f6-7925-bfda-f11d6c2e4550" xlink:to="loc_eqx_RestrictedShareUnitsRSUsAndPerformanceShareUnitsPRSUsMember_019c4859-bc2c-724b-ac38-b1ac4f66bde2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfInstrumentsThatAreAntidilutiveInPeriodPresented_019b47d6-45f6-7931-936d-6578f321c776" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfInstrumentsThatAreAntidilutiveInPeriodPresented"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfInstrumentsWithPotentialFutureDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShareLineItems_019b47d6-45f6-77dd-85be-104a239c7dee" xlink:to="loc_ifrs-full_NumberOfInstrumentsThatAreAntidilutiveInPeriodPresented_019b47d6-45f6-7931-936d-6578f321c776" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/SEGMENTINFORMATIONScheduleOfOperatingSegmentsDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#SEGMENTINFORMATIONScheduleOfOperatingSegmentsDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/SEGMENTINFORMATIONScheduleOfOperatingSegmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7f58-b716-f123dedb209c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOperatingSegmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_019b47d6-45f6-714e-84bd-b1da6b2dd9e2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOperatingSegmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7f58-b716-f123dedb209c" xlink:to="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_019b47d6-45f6-714e-84bd-b1da6b2dd9e2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentsAxis_019b47d6-45f6-7df6-afad-ae81f210f871" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_019b47d6-45f6-714e-84bd-b1da6b2dd9e2" xlink:to="loc_ifrs-full_SegmentsAxis_019b47d6-45f6-7df6-afad-ae81f210f871" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7df6-afad-ae81f210f871_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SegmentsAxis_019b47d6-45f6-7df6-afad-ae81f210f871" xlink:to="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7df6-afad-ae81f210f871_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-722b-b373-d172fa95b708" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SegmentsAxis_019b47d6-45f6-7df6-afad-ae81f210f871" xlink:to="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-722b-b373-d172fa95b708" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-45f6-7fd8-8d21-fffb303c049e" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-722b-b373-d172fa95b708" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-45f6-7fd8-8d21-fffb303c049e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ValentineMember_019b9ccb-add2-7be2-9fab-866bf88773d8" xlink:href="eqx-20251231.xsd#eqx_ValentineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-722b-b373-d172fa95b708" xlink:to="loc_eqx_ValentineMember_019b9ccb-add2-7be2-9fab-866bf88773d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MesquiteMember_019b47d6-45f6-7713-a8e6-bb7f2da22f33" xlink:href="eqx-20251231.xsd#eqx_MesquiteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-722b-b373-d172fa95b708" xlink:to="loc_eqx_MesquiteMember_019b47d6-45f6-7713-a8e6-bb7f2da22f33" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_NI_019b9ccc-7a94-75a3-9072-5efab44781fb" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_NI"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-722b-b373-d172fa95b708" xlink:to="loc_country_NI_019b9ccc-7a94-75a3-9072-5efab44781fb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CastleMountainMember_019b47d6-45f6-78cd-81c7-a4e57ef0f92f" xlink:href="eqx-20251231.xsd#eqx_CastleMountainMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-722b-b373-d172fa95b708" xlink:to="loc_eqx_CastleMountainMember_019b47d6-45f6-78cd-81c7-a4e57ef0f92f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_LosFilosMember_019b47d6-45f6-7013-8c6c-f9e6527fde98" xlink:href="eqx-20251231.xsd#eqx_LosFilosMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-722b-b373-d172fa95b708" xlink:to="loc_eqx_LosFilosMember_019b47d6-45f6-7013-8c6c-f9e6527fde98" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PanMember_019b9cce-a62a-735d-92fa-2bf6232a82e4" xlink:href="eqx-20251231.xsd#eqx_PanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-722b-b373-d172fa95b708" xlink:to="loc_eqx_PanMember_019b9cce-a62a-735d-92fa-2bf6232a82e4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_Corporate1Member_019b47d6-45f6-7c6d-a469-261693e38972" xlink:href="eqx-20251231.xsd#eqx_Corporate1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-722b-b373-d172fa95b708" xlink:to="loc_eqx_Corporate1Member_019b47d6-45f6-7c6d-a469-261693e38972" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_BR_019b9ccc-d776-7507-a822-8bb7d707eb6c" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_BR"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-722b-b373-d172fa95b708" xlink:to="loc_country_BR_019b9ccc-d776-7507-a822-8bb7d707eb6c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019bf3a6-987f-7cb5-80a6-bd1fc6f7f338" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingAndDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_019b47d6-45f6-714e-84bd-b1da6b2dd9e2" xlink:to="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019bf3a6-987f-7cb5-80a6-bd1fc6f7f338" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingOperationsMember_019bf3a6-987f-7cb5-80a6-bd1fc6f7f338_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019bf3a6-987f-7cb5-80a6-bd1fc6f7f338" xlink:to="loc_ifrs-full_ContinuingOperationsMember_019bf3a6-987f-7cb5-80a6-bd1fc6f7f338_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingOperationsMember_019bf3a6-987f-7cad-b124-e4fc8991adb9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019bf3a6-987f-7cb5-80a6-bd1fc6f7f338" xlink:to="loc_ifrs-full_ContinuingOperationsMember_019bf3a6-987f-7cad-b124-e4fc8991adb9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DiscontinuedOperationsMember_019bf3a6-f8e5-73ab-8ce1-c7a0cecac788" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ContinuingOperationsMember_019bf3a6-987f-7cad-b124-e4fc8991adb9" xlink:to="loc_ifrs-full_DiscontinuedOperationsMember_019bf3a6-f8e5-73ab-8ce1-c7a0cecac788" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AggregateContinuingAndDiscontinuedOperationsMember_019c24ab-d678-7734-81ee-bd9bc836342d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AggregateContinuingAndDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ContinuingOperationsMember_019bf3a6-987f-7cad-b124-e4fc8991adb9" xlink:to="loc_ifrs-full_AggregateContinuingAndDiscontinuedOperationsMember_019c24ab-d678-7734-81ee-bd9bc836342d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Revenue_019b47d6-45f6-7d24-9908-4cb04ff521f2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Revenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7f58-b716-f123dedb209c" xlink:to="loc_ifrs-full_Revenue_019b47d6-45f6-7d24-9908-4cb04ff521f2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OperatingExpense_019b47d6-45f6-7c7e-b940-6fcaafbc41f7" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OperatingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7f58-b716-f123dedb209c" xlink:to="loc_ifrs-full_OperatingExpense_019b47d6-45f6-7c7e-b940-6fcaafbc41f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DepreciationAndAmortisationExpense_019b47d6-45f6-7d4a-bdb1-6ff9cdbab401" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DepreciationAndAmortisationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7f58-b716-f123dedb209c" xlink:to="loc_ifrs-full_DepreciationAndAmortisationExpense_019b47d6-45f6-7d4a-bdb1-6ff9cdbab401" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources_019b47d6-45f6-7d79-b608-b779d0ff71a5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7f58-b716-f123dedb209c" xlink:to="loc_ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources_019b47d6-45f6-7d79-b608-b779d0ff71a5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MiscellaneousOtherOperatingExpense_019b47d6-45f6-760e-a06f-59a5d2df5e50" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MiscellaneousOtherOperatingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7f58-b716-f123dedb209c" xlink:to="loc_ifrs-full_MiscellaneousOtherOperatingExpense_019b47d6-45f6-760e-a06f-59a5d2df5e50" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossFromOperatingActivities_019b47d6-45f6-7f87-8ac6-5a7808f8e546" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossFromOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7f58-b716-f123dedb209c" xlink:to="loc_ifrs-full_ProfitLossFromOperatingActivities_019b47d6-45f6-7f87-8ac6-5a7808f8e546" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherOperatingIncomeExpense_019b9d16-aee9-724d-b7b4-15ec59f7261d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherOperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7f58-b716-f123dedb209c" xlink:to="loc_ifrs-full_OtherOperatingIncomeExpense_019b9d16-aee9-724d-b7b4-15ec59f7261d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MiscellaneousOtherOperatingExpenseSalariesEmployeeBenefitsAndSeveranceCosts_019c251e-55f1-747c-9878-9820e85e7639" xlink:href="eqx-20251231.xsd#eqx_MiscellaneousOtherOperatingExpenseSalariesEmployeeBenefitsAndSeveranceCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7f58-b716-f123dedb209c" xlink:to="loc_eqx_MiscellaneousOtherOperatingExpenseSalariesEmployeeBenefitsAndSeveranceCosts_019c251e-55f1-747c-9878-9820e85e7639" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MiscellaneousOtherOperatingExpenseDepreciationAndDepletion_019c251f-2273-7e9f-9bb9-8d44548b5ec5" xlink:href="eqx-20251231.xsd#eqx_MiscellaneousOtherOperatingExpenseDepreciationAndDepletion"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7f58-b716-f123dedb209c" xlink:to="loc_eqx_MiscellaneousOtherOperatingExpenseDepreciationAndDepletion_019c251f-2273-7e9f-9bb9-8d44548b5ec5" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/SEGMENTINFORMATIONScheduleOfDetailedInformationaboutAssetsandLiabilitiesBasedonOperatingSegmentsDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#SEGMENTINFORMATIONScheduleOfDetailedInformationaboutAssetsandLiabilitiesBasedonOperatingSegmentsDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/SEGMENTINFORMATIONScheduleOfDetailedInformationaboutAssetsandLiabilitiesBasedonOperatingSegmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7df6-95f8-8369349b9b65" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOperatingSegmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_019b47d6-45f6-7ad9-a3d0-d1a963445880" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOperatingSegmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7df6-95f8-8369349b9b65" xlink:to="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_019b47d6-45f6-7ad9-a3d0-d1a963445880" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentsAxis_019b47d6-45f6-72da-b8da-3d99e14b2dcf" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_019b47d6-45f6-7ad9-a3d0-d1a963445880" xlink:to="loc_ifrs-full_SegmentsAxis_019b47d6-45f6-72da-b8da-3d99e14b2dcf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-72da-b8da-3d99e14b2dcf_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SegmentsAxis_019b47d6-45f6-72da-b8da-3d99e14b2dcf" xlink:to="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-72da-b8da-3d99e14b2dcf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7246-87b7-95e9f61fa7c3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SegmentsAxis_019b47d6-45f6-72da-b8da-3d99e14b2dcf" xlink:to="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7246-87b7-95e9f61fa7c3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-45f6-741b-a339-e8affae0e0a8" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7246-87b7-95e9f61fa7c3" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-45f6-741b-a339-e8affae0e0a8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ValentineMember_019b9cc8-3574-78b0-b8ba-7832e940c03d" xlink:href="eqx-20251231.xsd#eqx_ValentineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7246-87b7-95e9f61fa7c3" xlink:to="loc_eqx_ValentineMember_019b9cc8-3574-78b0-b8ba-7832e940c03d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MesquiteMember_019b47d6-45f6-7fb7-8f52-53fb2976417d" xlink:href="eqx-20251231.xsd#eqx_MesquiteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7246-87b7-95e9f61fa7c3" xlink:to="loc_eqx_MesquiteMember_019b47d6-45f6-7fb7-8f52-53fb2976417d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_NI_019b9cc8-ba39-7b4a-88dc-7d48184a837a" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_NI"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7246-87b7-95e9f61fa7c3" xlink:to="loc_country_NI_019b9cc8-ba39-7b4a-88dc-7d48184a837a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CastleMountainMember_019b47d6-45f6-7bb2-9e65-7b74c3fdaf85" xlink:href="eqx-20251231.xsd#eqx_CastleMountainMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7246-87b7-95e9f61fa7c3" xlink:to="loc_eqx_CastleMountainMember_019b47d6-45f6-7bb2-9e65-7b74c3fdaf85" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_LosFilosMember_019b47d6-45f6-7910-a56a-efeff1405036" xlink:href="eqx-20251231.xsd#eqx_LosFilosMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7246-87b7-95e9f61fa7c3" xlink:to="loc_eqx_LosFilosMember_019b47d6-45f6-7910-a56a-efeff1405036" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_Corporate1Member_019b47d6-45f6-77cb-85f2-05278007cac0" xlink:href="eqx-20251231.xsd#eqx_Corporate1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7246-87b7-95e9f61fa7c3" xlink:to="loc_eqx_Corporate1Member_019b47d6-45f6-77cb-85f2-05278007cac0" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_BR_019b9cc8-f4ec-73c7-ac6e-ef73e43d405b" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_BR"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7246-87b7-95e9f61fa7c3" xlink:to="loc_country_BR_019b9cc8-f4ec-73c7-ac6e-ef73e43d405b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019bf3a9-7f59-7b9c-b9ad-f874acc596e3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingAndDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_019b47d6-45f6-7ad9-a3d0-d1a963445880" xlink:to="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019bf3a9-7f59-7b9c-b9ad-f874acc596e3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingOperationsMember_019bf3a9-7f59-7b9c-b9ad-f874acc596e3_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019bf3a9-7f59-7b9c-b9ad-f874acc596e3" xlink:to="loc_ifrs-full_ContinuingOperationsMember_019bf3a9-7f59-7b9c-b9ad-f874acc596e3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingOperationsMember_019bf3a9-7f59-7598-8e4f-81dfb4fd148c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019bf3a9-7f59-7b9c-b9ad-f874acc596e3" xlink:to="loc_ifrs-full_ContinuingOperationsMember_019bf3a9-7f59-7598-8e4f-81dfb4fd148c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DiscontinuedOperationsMember_019bf3aa-2d39-7c91-aaeb-1ce50a245947" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ContinuingOperationsMember_019bf3a9-7f59-7598-8e4f-81dfb4fd148c" xlink:to="loc_ifrs-full_DiscontinuedOperationsMember_019bf3aa-2d39-7c91-aaeb-1ce50a245947" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AggregateContinuingAndDiscontinuedOperationsMember_019c24ca-8898-7812-a5c0-eaf7c0b4a14e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AggregateContinuingAndDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ContinuingOperationsMember_019bf3a9-7f59-7598-8e4f-81dfb4fd148c" xlink:to="loc_ifrs-full_AggregateContinuingAndDiscontinuedOperationsMember_019c24ca-8898-7812-a5c0-eaf7c0b4a14e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AssetsExcludingAssetsClassifiedAsHeldForSale_019c24c6-e6f3-71be-8ef1-993b9a594655" xlink:href="eqx-20251231.xsd#eqx_AssetsExcludingAssetsClassifiedAsHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7df6-95f8-8369349b9b65" xlink:to="loc_eqx_AssetsExcludingAssetsClassifiedAsHeldForSale_019c24c6-e6f3-71be-8ef1-993b9a594655" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_LiabilitiesExcludingLiabilitiesClassifiedAsHeldForSale_019c24c7-7fa4-77b9-af86-7aee3cbff1cc" xlink:href="eqx-20251231.xsd#eqx_LiabilitiesExcludingLiabilitiesClassifiedAsHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7df6-95f8-8369349b9b65" xlink:to="loc_eqx_LiabilitiesExcludingLiabilitiesClassifiedAsHeldForSale_019c24c7-7fa4-77b9-af86-7aee3cbff1cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Assets_019b47d6-45f6-7bc7-82af-9c49463393c5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7df6-95f8-8369349b9b65" xlink:to="loc_ifrs-full_Assets_019b47d6-45f6-7bc7-82af-9c49463393c5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Liabilities_019b47d6-45f6-7a42-882d-7a11a53f71ff" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7df6-95f8-8369349b9b65" xlink:to="loc_ifrs-full_Liabilities_019b47d6-45f6-7a42-882d-7a11a53f71ff" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Revenue_019c24ca-8898-7735-8483-8dac4fc46913" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Revenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7df6-95f8-8369349b9b65" xlink:to="loc_ifrs-full_Revenue_019c24ca-8898-7735-8483-8dac4fc46913" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OperatingExpense_019c24ca-8898-7067-a773-e3e135fabb70" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OperatingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7df6-95f8-8369349b9b65" xlink:to="loc_ifrs-full_OperatingExpense_019c24ca-8898-7067-a773-e3e135fabb70" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DepreciationAndAmortisationExpense_019c24ca-8898-7909-a436-39cabd8d8abf" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DepreciationAndAmortisationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7df6-95f8-8369349b9b65" xlink:to="loc_ifrs-full_DepreciationAndAmortisationExpense_019c24ca-8898-7909-a436-39cabd8d8abf" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources_019c24ca-8898-7d3a-a46a-899510d15a30" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7df6-95f8-8369349b9b65" xlink:to="loc_ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources_019c24ca-8898-7d3a-a46a-899510d15a30" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MiscellaneousOtherOperatingExpense_019c24ca-8898-7294-8da2-60541b0c2fdc" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MiscellaneousOtherOperatingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7df6-95f8-8369349b9b65" xlink:to="loc_ifrs-full_MiscellaneousOtherOperatingExpense_019c24ca-8898-7294-8da2-60541b0c2fdc" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossFromOperatingActivities_019c24ca-8898-7177-9b23-a2ff9bd7c413" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossFromOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7df6-95f8-8369349b9b65" xlink:to="loc_ifrs-full_ProfitLossFromOperatingActivities_019c24ca-8898-7177-9b23-a2ff9bd7c413" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/SEGMENTINFORMATIONScheduleOfDetailedInformationAboutCapitalExpenditureBasedOnOperatingSegmentsDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#SEGMENTINFORMATIONScheduleOfDetailedInformationAboutCapitalExpenditureBasedOnOperatingSegmentsDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/SEGMENTINFORMATIONScheduleOfDetailedInformationAboutCapitalExpenditureBasedOnOperatingSegmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-70c7-b59b-f96688051a02" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOperatingSegmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_019b47d6-45f6-761f-8b7b-168b3d102cbd" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOperatingSegmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-70c7-b59b-f96688051a02" xlink:to="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_019b47d6-45f6-761f-8b7b-168b3d102cbd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentsAxis_019b47d6-45f6-7600-ac7f-e4ead5281b01" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_019b47d6-45f6-761f-8b7b-168b3d102cbd" xlink:to="loc_ifrs-full_SegmentsAxis_019b47d6-45f6-7600-ac7f-e4ead5281b01" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7600-ac7f-e4ead5281b01_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SegmentsAxis_019b47d6-45f6-7600-ac7f-e4ead5281b01" xlink:to="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7600-ac7f-e4ead5281b01_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7a27-ab68-64ad563e51d6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SegmentsAxis_019b47d6-45f6-7600-ac7f-e4ead5281b01" xlink:to="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7a27-ab68-64ad563e51d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-45f6-7f4a-b118-74c57df69035" xlink:href="eqx-20251231.xsd#eqx_GreenstoneGoldMinesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7a27-ab68-64ad563e51d6" xlink:to="loc_eqx_GreenstoneGoldMinesLPMember_019b47d6-45f6-7f4a-b118-74c57df69035" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ValentineMember_019b9cc6-ddc6-7b2a-865a-6d96154b32a2" xlink:href="eqx-20251231.xsd#eqx_ValentineMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7a27-ab68-64ad563e51d6" xlink:to="loc_eqx_ValentineMember_019b9cc6-ddc6-7b2a-865a-6d96154b32a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MesquiteMember_019b47d6-45f6-7115-8f91-17bc9b94d9eb" xlink:href="eqx-20251231.xsd#eqx_MesquiteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7a27-ab68-64ad563e51d6" xlink:to="loc_eqx_MesquiteMember_019b47d6-45f6-7115-8f91-17bc9b94d9eb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_NI_019b9cc2-f7fc-7d00-b95e-5e8fdacaccac" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_NI"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7a27-ab68-64ad563e51d6" xlink:to="loc_country_NI_019b9cc2-f7fc-7d00-b95e-5e8fdacaccac" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_NicaraguaMinesMember_019cfd37-ba65-79e7-b2bb-613b07bd3877" xlink:href="eqx-20251231.xsd#eqx_NicaraguaMinesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7a27-ab68-64ad563e51d6" xlink:to="loc_eqx_NicaraguaMinesMember_019cfd37-ba65-79e7-b2bb-613b07bd3877" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CastleMountainMember_019b47d6-45f6-7b2e-8571-afed395cdd65" xlink:href="eqx-20251231.xsd#eqx_CastleMountainMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7a27-ab68-64ad563e51d6" xlink:to="loc_eqx_CastleMountainMember_019b47d6-45f6-7b2e-8571-afed395cdd65" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_LosFilosMember_019b47d6-45f6-7714-8e3d-8c1df52d4d05" xlink:href="eqx-20251231.xsd#eqx_LosFilosMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7a27-ab68-64ad563e51d6" xlink:to="loc_eqx_LosFilosMember_019b47d6-45f6-7714-8e3d-8c1df52d4d05" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PanMember_019b9cc5-d956-7c18-b805-2231918524aa" xlink:href="eqx-20251231.xsd#eqx_PanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7a27-ab68-64ad563e51d6" xlink:to="loc_eqx_PanMember_019b9cc5-d956-7c18-b805-2231918524aa" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_Corporate1Member_019b47d6-45f6-75f7-997a-e5340d8e9038" xlink:href="eqx-20251231.xsd#eqx_Corporate1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7a27-ab68-64ad563e51d6" xlink:to="loc_eqx_Corporate1Member_019b47d6-45f6-75f7-997a-e5340d8e9038" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BrazilMinesMember_019b9cc3-629b-76a1-8814-ce7e49802601" xlink:href="eqx-20251231.xsd#eqx_BrazilMinesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7a27-ab68-64ad563e51d6" xlink:to="loc_eqx_BrazilMinesMember_019b9cc3-629b-76a1-8814-ce7e49802601" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019bf3ab-0267-75c0-9b58-0921c47c6370" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingAndDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_019b47d6-45f6-761f-8b7b-168b3d102cbd" xlink:to="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019bf3ab-0267-75c0-9b58-0921c47c6370" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingOperationsMember_019bf3ab-0267-75c0-9b58-0921c47c6370_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019bf3ab-0267-75c0-9b58-0921c47c6370" xlink:to="loc_ifrs-full_ContinuingOperationsMember_019bf3ab-0267-75c0-9b58-0921c47c6370_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContinuingOperationsMember_019bf3ab-0267-76f4-a2ca-c4b3751a7585" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContinuingOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ContinuingAndDiscontinuedOperationsAxis_019bf3ab-0267-75c0-9b58-0921c47c6370" xlink:to="loc_ifrs-full_ContinuingOperationsMember_019bf3ab-0267-76f4-a2ca-c4b3751a7585" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DiscontinuedOperationsMember_019bf3ab-493d-7bfb-a4ba-3c295f35e05f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ContinuingOperationsMember_019bf3ab-0267-76f4-a2ca-c4b3751a7585" xlink:to="loc_ifrs-full_DiscontinuedOperationsMember_019bf3ab-493d-7bfb-a4ba-3c295f35e05f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AggregateContinuingAndDiscontinuedOperationsMember_019c2529-bdf5-766e-865d-d2f997e85164" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AggregateContinuingAndDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ContinuingOperationsMember_019bf3ab-0267-76f4-a2ca-c4b3751a7585" xlink:to="loc_ifrs-full_AggregateContinuingAndDiscontinuedOperationsMember_019c2529-bdf5-766e-865d-d2f997e85164" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CapitalExpenditures_019b47d6-45f6-7911-b987-69490b7f8b50" xlink:href="eqx-20251231.xsd#eqx_CapitalExpenditures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-70c7-b59b-f96688051a02" xlink:to="loc_eqx_CapitalExpenditures_019b47d6-45f6-7911-b987-69490b7f8b50" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_IncreaseDecreaseInAccruedExpenditures_019b47d6-45f6-7fbf-9027-62712c2e87b9" xlink:href="eqx-20251231.xsd#eqx_IncreaseDecreaseInAccruedExpenditures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-70c7-b59b-f96688051a02" xlink:to="loc_eqx_IncreaseDecreaseInAccruedExpenditures_019b47d6-45f6-7fbf-9027-62712c2e87b9" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/SEGMENTINFORMATIONScheduleOfDetailedInformationaboutNoncurrentAssetsbyRegionDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#SEGMENTINFORMATIONScheduleOfDetailedInformationaboutNoncurrentAssetsbyRegionDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/SEGMENTINFORMATIONScheduleOfDetailedInformationaboutNoncurrentAssetsbyRegionDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7fbe-ad02-0c004e419d2e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOperatingSegmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_019b47d6-45f6-7f14-81d6-d4c819206a27" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOperatingSegmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7fbe-ad02-0c004e419d2e" xlink:to="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_019b47d6-45f6-7f14-81d6-d4c819206a27" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_019b47d6-45f6-7740-8198-522f50a26497" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsTable_019b47d6-45f6-7f14-81d6-d4c819206a27" xlink:to="loc_srt_StatementGeographicalAxis_019b47d6-45f6-7740-8198-522f50a26497" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019b47d6-45f6-7740-8198-522f50a26497_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_019b47d6-45f6-7740-8198-522f50a26497" xlink:to="loc_srt_SegmentGeographicalDomain_019b47d6-45f6-7740-8198-522f50a26497_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019b47d6-45f6-729c-9b23-007810837992" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_019b47d6-45f6-7740-8198-522f50a26497" xlink:to="loc_srt_SegmentGeographicalDomain_019b47d6-45f6-729c-9b23-007810837992" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CA_019b47d6-45f6-78fd-9c2a-d77c1dfed898" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019b47d6-45f6-729c-9b23-007810837992" xlink:to="loc_country_CA_019b47d6-45f6-78fd-9c2a-d77c1dfed898" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_019b47d6-45f6-7e1f-9330-c3b54d058e68" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019b47d6-45f6-729c-9b23-007810837992" xlink:to="loc_country_US_019b47d6-45f6-7e1f-9330-c3b54d058e68" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_MX_019b47d6-45f6-77f9-9f3c-694212944429" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_MX"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019b47d6-45f6-729c-9b23-007810837992" xlink:to="loc_country_MX_019b47d6-45f6-77f9-9f3c-694212944429" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_NI_019b9cc0-86b5-780c-98ad-ccb7479a840f" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_NI"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019b47d6-45f6-729c-9b23-007810837992" xlink:to="loc_country_NI_019b9cc0-86b5-780c-98ad-ccb7479a840f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentAssets_019b47d6-45f6-7ca3-aa85-8c02e43d11d1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsLineItems_019b47d6-45f6-7fbe-ad02-0c004e419d2e" xlink:to="loc_ifrs-full_NoncurrentAssets_019b47d6-45f6-7ca3-aa85-8c02e43d11d1" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/SEGMENTINFORMATIONScheduleOfSalestoIndividualCustomersthatExceed10ofAnnualMetalSalesDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#SEGMENTINFORMATIONScheduleOfSalestoIndividualCustomersthatExceed10ofAnnualMetalSalesDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/SEGMENTINFORMATIONScheduleOfSalestoIndividualCustomersthatExceed10ofAnnualMetalSalesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfMajorCustomersLineItems_019b47d6-45f6-7345-8f01-e9c295104ad5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfMajorCustomersLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfMajorCustomersTable_019b47d6-45f6-70a2-9913-69600701f40d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfMajorCustomersTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfMajorCustomersLineItems_019b47d6-45f6-7345-8f01-e9c295104ad5" xlink:to="loc_ifrs-full_DisclosureOfMajorCustomersTable_019b47d6-45f6-70a2-9913-69600701f40d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MajorCustomersAxis_019b47d6-45f6-7925-b633-49327704a691" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MajorCustomersAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfMajorCustomersTable_019b47d6-45f6-70a2-9913-69600701f40d" xlink:to="loc_ifrs-full_MajorCustomersAxis_019b47d6-45f6-7925-b633-49327704a691" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MajorCustomersDomain_019b47d6-45f6-7925-b633-49327704a691_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MajorCustomersDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_MajorCustomersAxis_019b47d6-45f6-7925-b633-49327704a691" xlink:to="loc_ifrs-full_MajorCustomersDomain_019b47d6-45f6-7925-b633-49327704a691_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MajorCustomersDomain_019b47d6-45f6-7acb-bd2c-2abf03dce6a0" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MajorCustomersDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_MajorCustomersAxis_019b47d6-45f6-7925-b633-49327704a691" xlink:to="loc_ifrs-full_MajorCustomersDomain_019b47d6-45f6-7acb-bd2c-2abf03dce6a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CustomerOneMember_019b47d6-45f6-7d7c-ba10-bfd99430cfd4" xlink:href="eqx-20251231.xsd#eqx_CustomerOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_MajorCustomersDomain_019b47d6-45f6-7acb-bd2c-2abf03dce6a0" xlink:to="loc_eqx_CustomerOneMember_019b47d6-45f6-7d7c-ba10-bfd99430cfd4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CustomerTwoMember_019b47d6-45f6-75f5-a873-79c1460ff40a" xlink:href="eqx-20251231.xsd#eqx_CustomerTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_MajorCustomersDomain_019b47d6-45f6-7acb-bd2c-2abf03dce6a0" xlink:to="loc_eqx_CustomerTwoMember_019b47d6-45f6-75f5-a873-79c1460ff40a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CustomerThreeMember_019b47d6-45f6-7501-9621-365c00f46b1d" xlink:href="eqx-20251231.xsd#eqx_CustomerThreeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_MajorCustomersDomain_019b47d6-45f6-7acb-bd2c-2abf03dce6a0" xlink:to="loc_eqx_CustomerThreeMember_019b47d6-45f6-7501-9621-365c00f46b1d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentsAxis_019b47d6-45f6-7425-b3e8-8c6dae8a03b8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfMajorCustomersTable_019b47d6-45f6-70a2-9913-69600701f40d" xlink:to="loc_ifrs-full_SegmentsAxis_019b47d6-45f6-7425-b3e8-8c6dae8a03b8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7425-b3e8-8c6dae8a03b8_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_SegmentsAxis_019b47d6-45f6-7425-b3e8-8c6dae8a03b8" xlink:to="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-7425-b3e8-8c6dae8a03b8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-780c-b095-5619a3bb4203" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_SegmentsAxis_019b47d6-45f6-7425-b3e8-8c6dae8a03b8" xlink:to="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-780c-b095-5619a3bb4203" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MetalMember_019b47d6-45f6-7e77-8833-65633b6aba9b" xlink:href="eqx-20251231.xsd#eqx_MetalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SegmentsDomain_019b47d6-45f6-780c-b095-5619a3bb4203" xlink:to="loc_eqx_MetalMember_019b47d6-45f6-7e77-8833-65633b6aba9b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Revenue_019b47d6-45f6-7b6a-89bd-76bae549d61b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Revenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfMajorCustomersLineItems_019b47d6-45f6-7345-8f01-e9c295104ad5" xlink:to="loc_ifrs-full_Revenue_019b47d6-45f6-7b6a-89bd-76bae549d61b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PercentageOfEntitysRevenue_019b47d6-45f6-72b5-b343-42377c93b3b7" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PercentageOfEntitysRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfMajorCustomersLineItems_019b47d6-45f6-7345-8f01-e9c295104ad5" xlink:to="loc_ifrs-full_PercentageOfEntitysRevenue_019b47d6-45f6-72b5-b343-42377c93b3b7" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEMEASUREMENTSScheduleofCarryingAmountofFinancialAssetsandLiabilitiesDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#FINANCIALINSTRUMENTSANDFAIRVALUEMEASUREMENTSScheduleofCarryingAmountofFinancialAssetsandLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEMEASUREMENTSScheduleofCarryingAmountofFinancialAssetsandLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019b47d6-45f6-71ba-8ea8-9e9fd0e2a594" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019b47d6-45f6-74bc-8ce4-e7269eaa1309" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019b47d6-45f6-71ba-8ea8-9e9fd0e2a594" xlink:to="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019b47d6-45f6-74bc-8ce4-e7269eaa1309" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CategoriesOfFinancialAssetsAxis_019b47d6-45f6-7fac-990e-e134b64eb8ee" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialAssetsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019b47d6-45f6-74bc-8ce4-e7269eaa1309" xlink:to="loc_ifrs-full_CategoriesOfFinancialAssetsAxis_019b47d6-45f6-7fac-990e-e134b64eb8ee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CategoriesOfFinancialAssetsDomain_019b47d6-45f6-7fac-990e-e134b64eb8ee_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfFinancialAssetsAxis_019b47d6-45f6-7fac-990e-e134b64eb8ee" xlink:to="loc_ifrs-full_CategoriesOfFinancialAssetsDomain_019b47d6-45f6-7fac-990e-e134b64eb8ee_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CategoriesOfFinancialAssetsDomain_019b47d6-45f6-7aea-9e2f-26b10f983e4a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfFinancialAssetsAxis_019b47d6-45f6-7fac-990e-e134b64eb8ee" xlink:to="loc_ifrs-full_CategoriesOfFinancialAssetsDomain_019b47d6-45f6-7aea-9e2f-26b10f983e4a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_019b47d6-45f6-7124-9f23-b1613c3b9865" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CategoriesOfFinancialAssetsDomain_019b47d6-45f6-7aea-9e2f-26b10f983e4a" xlink:to="loc_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_019b47d6-45f6-7124-9f23-b1613c3b9865" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember_019b47d6-45f6-75ff-a59c-199bfdd2e8c0" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CategoriesOfFinancialAssetsDomain_019b47d6-45f6-7aea-9e2f-26b10f983e4a" xlink:to="loc_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember_019b47d6-45f6-75ff-a59c-199bfdd2e8c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember_019b47d6-45f6-7ba7-874a-0b6b3458930b" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CategoriesOfFinancialAssetsDomain_019b47d6-45f6-7aea-9e2f-26b10f983e4a" xlink:to="loc_ifrs-full_FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember_019b47d6-45f6-7ba7-874a-0b6b3458930b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019b47d6-45f6-7890-afda-8d0bc3a9d970" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019b47d6-45f6-74bc-8ce4-e7269eaa1309" xlink:to="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019b47d6-45f6-7890-afda-8d0bc3a9d970" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f6-7890-afda-8d0bc3a9d970_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019b47d6-45f6-7890-afda-8d0bc3a9d970" xlink:to="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f6-7890-afda-8d0bc3a9d970_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f6-7be4-ba5b-486369ff1cbe" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019b47d6-45f6-7890-afda-8d0bc3a9d970" xlink:to="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f6-7be4-ba5b-486369ff1cbe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CashAndCashEquivalentMember_019b47d6-45f6-7ec2-9337-abb2563c1818" xlink:href="eqx-20251231.xsd#eqx_CashAndCashEquivalentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f6-7be4-ba5b-486369ff1cbe" xlink:to="loc_eqx_CashAndCashEquivalentMember_019b47d6-45f6-7ec2-9337-abb2563c1818" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradingSecuritiesMember_019b47d6-45f6-776a-b033-9d3b9304ade7" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradingSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f6-7be4-ba5b-486369ff1cbe" xlink:to="loc_ifrs-full_TradingSecuritiesMember_019b47d6-45f6-776a-b033-9d3b9304ade7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeReceivablesMember_019b47d6-45f6-7df1-9568-df6cee15acbe" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f6-7be4-ba5b-486369ff1cbe" xlink:to="loc_ifrs-full_TradeReceivablesMember_019b47d6-45f6-7df1-9568-df6cee15acbe" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativesMember_019b47d6-45f6-7cd0-b6a3-0afe42926b99" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f6-7be4-ba5b-486369ff1cbe" xlink:to="loc_ifrs-full_DerivativesMember_019b47d6-45f6-7cd0-b6a3-0afe42926b99" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_RestrictedCashMember_019b47d6-45f6-724d-8a96-1df35bbaf207" xlink:href="eqx-20251231.xsd#eqx_RestrictedCashMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f6-7be4-ba5b-486369ff1cbe" xlink:to="loc_eqx_RestrictedCashMember_019b47d6-45f6-724d-8a96-1df35bbaf207" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherAssetsMember_019b47d6-45f6-76e7-b0ab-f9768bc5b4fa" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f6-7be4-ba5b-486369ff1cbe" xlink:to="loc_ifrs-full_OtherAssetsMember_019b47d6-45f6-76e7-b0ab-f9768bc5b4fa" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CategoriesOfFinancialLiabilitiesAxis_019b47d6-45f6-7eb6-8f3d-4fa1d903b73a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialLiabilitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019b47d6-45f6-74bc-8ce4-e7269eaa1309" xlink:to="loc_ifrs-full_CategoriesOfFinancialLiabilitiesAxis_019b47d6-45f6-7eb6-8f3d-4fa1d903b73a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CategoriesOfFinancialLiabilitiesDomain_019b47d6-45f6-7eb6-8f3d-4fa1d903b73a_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_CategoriesOfFinancialLiabilitiesAxis_019b47d6-45f6-7eb6-8f3d-4fa1d903b73a" xlink:to="loc_ifrs-full_CategoriesOfFinancialLiabilitiesDomain_019b47d6-45f6-7eb6-8f3d-4fa1d903b73a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CategoriesOfFinancialLiabilitiesDomain_019b47d6-45f6-75f6-a37f-6900e88cbf83" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_CategoriesOfFinancialLiabilitiesAxis_019b47d6-45f6-7eb6-8f3d-4fa1d903b73a" xlink:to="loc_ifrs-full_CategoriesOfFinancialLiabilitiesDomain_019b47d6-45f6-75f6-a37f-6900e88cbf83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialLiabilitiesAtAmortisedCostCategoryMember_019b47d6-45f6-7dec-8aa7-7d570e6c7e10" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilitiesAtAmortisedCostCategoryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CategoriesOfFinancialLiabilitiesDomain_019b47d6-45f6-75f6-a37f-6900e88cbf83" xlink:to="loc_ifrs-full_FinancialLiabilitiesAtAmortisedCostCategoryMember_019b47d6-45f6-7dec-8aa7-7d570e6c7e10" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember_019b47d6-45f6-7f7e-b01e-f4504f802d56" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_CategoriesOfFinancialLiabilitiesDomain_019b47d6-45f6-75f6-a37f-6900e88cbf83" xlink:to="loc_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember_019b47d6-45f6-7f7e-b01e-f4504f802d56" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-45f6-780c-86b5-1b57b7a75905" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019b47d6-45f6-74bc-8ce4-e7269eaa1309" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-45f6-780c-86b5-1b57b7a75905" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f6-780c-86b5-1b57b7a75905_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-45f6-780c-86b5-1b57b7a75905" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f6-780c-86b5-1b57b7a75905_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f6-7792-97dd-7d3e87c6469d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-45f6-780c-86b5-1b57b7a75905" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f6-7792-97dd-7d3e87c6469d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AccountsPayableAndAccruedLiabilities1Member_019b47d6-45f6-7266-869d-5e03e9bfab6c" xlink:href="eqx-20251231.xsd#eqx_AccountsPayableAndAccruedLiabilities1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f6-7792-97dd-7d3e87c6469d" xlink:to="loc_eqx_AccountsPayableAndAccruedLiabilities1Member_019b47d6-45f6-7266-869d-5e03e9bfab6c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_LoansAndBorrowingsMember_019b47d6-45f6-7e95-85cd-73bf1a865cc5" xlink:href="eqx-20251231.xsd#eqx_LoansAndBorrowingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f6-7792-97dd-7d3e87c6469d" xlink:to="loc_eqx_LoansAndBorrowingsMember_019b47d6-45f6-7e95-85cd-73bf1a865cc5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativesMember_019b47d6-45f6-7b91-9173-a86f6ff5bcb9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f6-7792-97dd-7d3e87c6469d" xlink:to="loc_ifrs-full_DerivativesMember_019b47d6-45f6-7b91-9173-a86f6ff5bcb9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LeaseLiabilitiesMember_019b47d6-45f6-737b-a68c-1d349fc279d5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LeaseLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f6-7792-97dd-7d3e87c6469d" xlink:to="loc_ifrs-full_LeaseLiabilitiesMember_019b47d6-45f6-737b-a68c-1d349fc279d5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_OtherLiabilities1Member_019b47d6-45f6-74a5-b993-6a826a452519" xlink:href="eqx-20251231.xsd#eqx_OtherLiabilities1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f6-7792-97dd-7d3e87c6469d" xlink:to="loc_eqx_OtherLiabilities1Member_019b47d6-45f6-74a5-b993-6a826a452519" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialAssetsAtFairValue_019b47d6-45f6-74d4-b678-2609a59141a1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssetsAtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019b47d6-45f6-71ba-8ea8-9e9fd0e2a594" xlink:to="loc_ifrs-full_FinancialAssetsAtFairValue_019b47d6-45f6-74d4-b678-2609a59141a1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialLiabilitiesAtFairValue_019b47d6-45f6-775a-9abf-4b8f41f770f9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilitiesAtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019b47d6-45f6-71ba-8ea8-9e9fd0e2a594" xlink:to="loc_ifrs-full_FinancialLiabilitiesAtFairValue_019b47d6-45f6-775a-9abf-4b8f41f770f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCurrentAssets_019b47d6-45f6-79fa-b36a-8971c206c964" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherCurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019b47d6-45f6-71ba-8ea8-9e9fd0e2a594" xlink:to="loc_ifrs-full_OtherCurrentAssets_019b47d6-45f6-79fa-b36a-8971c206c964" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEMEASUREMENTSScheduleofHierarchyDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#FINANCIALINSTRUMENTSANDFAIRVALUEMEASUREMENTSScheduleofHierarchyDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEMEASUREMENTSScheduleofHierarchyDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019b47d6-45f6-72d4-be33-41f4d7065253" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019b47d6-45f6-7431-b1f6-f3500722919a" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019b47d6-45f6-72d4-be33-41f4d7065253" xlink:to="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019b47d6-45f6-7431-b1f6-f3500722919a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfAssetsAxis_019b47d6-45f6-79c9-872e-682ba8e78cac" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAssetsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019b47d6-45f6-7431-b1f6-f3500722919a" xlink:to="loc_ifrs-full_ClassesOfAssetsAxis_019b47d6-45f6-79c9-872e-682ba8e78cac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfAssetsDomain_019b47d6-45f6-79c9-872e-682ba8e78cac_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfAssetsAxis_019b47d6-45f6-79c9-872e-682ba8e78cac" xlink:to="loc_ifrs-full_ClassesOfAssetsDomain_019b47d6-45f6-79c9-872e-682ba8e78cac_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfAssetsDomain_019b47d6-45f6-7fe6-8e53-5530783d42d5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfAssetsAxis_019b47d6-45f6-79c9-872e-682ba8e78cac" xlink:to="loc_ifrs-full_ClassesOfAssetsDomain_019b47d6-45f6-7fe6-8e53-5530783d42d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradingSecuritiesMember_019b47d6-45f6-71a2-81b5-fb8bebe527eb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradingSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfAssetsDomain_019b47d6-45f6-7fe6-8e53-5530783d42d5" xlink:to="loc_ifrs-full_TradingSecuritiesMember_019b47d6-45f6-71a2-81b5-fb8bebe527eb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativesMember_019b47d6-45f6-79b3-96d0-eceb3d9c5e95" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfAssetsDomain_019b47d6-45f6-7fe6-8e53-5530783d42d5" xlink:to="loc_ifrs-full_DerivativesMember_019b47d6-45f6-79b3-96d0-eceb3d9c5e95" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherAssetsMember_019b47d6-45f6-7579-b3d0-9a669d18d4f2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfAssetsDomain_019b47d6-45f6-7fe6-8e53-5530783d42d5" xlink:to="loc_ifrs-full_OtherAssetsMember_019b47d6-45f6-7579-b3d0-9a669d18d4f2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfLiabilitiesAxis_019b47d6-45f6-7fde-b397-8c4df96c7d7a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfLiabilitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019b47d6-45f6-7431-b1f6-f3500722919a" xlink:to="loc_ifrs-full_ClassesOfLiabilitiesAxis_019b47d6-45f6-7fde-b397-8c4df96c7d7a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfLiabilitiesDomain_019b47d6-45f6-7fde-b397-8c4df96c7d7a_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfLiabilitiesAxis_019b47d6-45f6-7fde-b397-8c4df96c7d7a" xlink:to="loc_ifrs-full_ClassesOfLiabilitiesDomain_019b47d6-45f6-7fde-b397-8c4df96c7d7a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfLiabilitiesDomain_019b47d6-45f6-7b26-ae1f-772cd965e116" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfLiabilitiesAxis_019b47d6-45f6-7fde-b397-8c4df96c7d7a" xlink:to="loc_ifrs-full_ClassesOfLiabilitiesDomain_019b47d6-45f6-7b26-ae1f-772cd965e116" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativesMember_019b47d6-45f6-7115-bb7e-f199edec5eb5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfLiabilitiesDomain_019b47d6-45f6-7b26-ae1f-772cd965e116" xlink:to="loc_ifrs-full_DerivativesMember_019b47d6-45f6-7115-bb7e-f199edec5eb5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LevelsOfFairValueHierarchyAxis_019b47d6-45f6-7f8f-a1e0-287ed46f4a4e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LevelsOfFairValueHierarchyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019b47d6-45f6-7431-b1f6-f3500722919a" xlink:to="loc_ifrs-full_LevelsOfFairValueHierarchyAxis_019b47d6-45f6-7f8f-a1e0-287ed46f4a4e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LevelsOfFairValueHierarchyDomain_019b47d6-45f6-7f8f-a1e0-287ed46f4a4e_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LevelsOfFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_LevelsOfFairValueHierarchyAxis_019b47d6-45f6-7f8f-a1e0-287ed46f4a4e" xlink:to="loc_ifrs-full_LevelsOfFairValueHierarchyDomain_019b47d6-45f6-7f8f-a1e0-287ed46f4a4e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LevelsOfFairValueHierarchyDomain_019b47d6-45f6-7557-8de2-ce59081554a8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LevelsOfFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_LevelsOfFairValueHierarchyAxis_019b47d6-45f6-7f8f-a1e0-287ed46f4a4e" xlink:to="loc_ifrs-full_LevelsOfFairValueHierarchyDomain_019b47d6-45f6-7557-8de2-ce59081554a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Level1OfFairValueHierarchyMember_019b47d6-45f6-75c3-9976-0f0a5c4ccd99" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Level1OfFairValueHierarchyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_LevelsOfFairValueHierarchyDomain_019b47d6-45f6-7557-8de2-ce59081554a8" xlink:to="loc_ifrs-full_Level1OfFairValueHierarchyMember_019b47d6-45f6-75c3-9976-0f0a5c4ccd99" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Level2OfFairValueHierarchyMember_019b47d6-45f6-7935-8c16-8a83755a7cff" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Level2OfFairValueHierarchyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_LevelsOfFairValueHierarchyDomain_019b47d6-45f6-7557-8de2-ce59081554a8" xlink:to="loc_ifrs-full_Level2OfFairValueHierarchyMember_019b47d6-45f6-7935-8c16-8a83755a7cff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Level3OfFairValueHierarchyMember_019b47d6-45f6-71cc-9115-0cb66794534c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Level3OfFairValueHierarchyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_LevelsOfFairValueHierarchyDomain_019b47d6-45f6-7557-8de2-ce59081554a8" xlink:to="loc_ifrs-full_Level3OfFairValueHierarchyMember_019b47d6-45f6-71cc-9115-0cb66794534c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialAssets_019b47d6-45f6-7ff3-8f52-fb5673f766b1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019b47d6-45f6-72d4-be33-41f4d7065253" xlink:to="loc_ifrs-full_FinancialAssets_019b47d6-45f6-7ff3-8f52-fb5673f766b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialLiabilities_019b47d6-45f6-778c-8cd2-7dcc629f811e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019b47d6-45f6-72d4-be33-41f4d7065253" xlink:to="loc_ifrs-full_FinancialLiabilities_019b47d6-45f6-778c-8cd2-7dcc629f811e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NetAssetsLiabilities_019b47d6-45f6-7c0e-b949-b5920f116550" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NetAssetsLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019b47d6-45f6-72d4-be33-41f4d7065253" xlink:to="loc_ifrs-full_NetAssetsLiabilities_019b47d6-45f6-7c0e-b949-b5920f116550" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEMEASUREMENTSAdditionalInformationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#FINANCIALINSTRUMENTSANDFAIRVALUEMEASUREMENTSAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEMEASUREMENTSAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019c26ea-cc84-756c-b712-6967a5a125fe" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019c26ea-cc84-72d6-b73c-1d983adc2ad7" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019c26ea-cc84-756c-b712-6967a5a125fe" xlink:to="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019c26ea-cc84-72d6-b73c-1d983adc2ad7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfAssetsAxis_019c26eb-a9ee-7d1e-af02-cb91f7b950a2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAssetsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019c26ea-cc84-72d6-b73c-1d983adc2ad7" xlink:to="loc_ifrs-full_ClassesOfAssetsAxis_019c26eb-a9ee-7d1e-af02-cb91f7b950a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfAssetsDomain_019c26eb-a9ee-7d1e-af02-cb91f7b950a2_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfAssetsAxis_019c26eb-a9ee-7d1e-af02-cb91f7b950a2" xlink:to="loc_ifrs-full_ClassesOfAssetsDomain_019c26eb-a9ee-7d1e-af02-cb91f7b950a2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfAssetsDomain_019c26eb-a9ee-78fe-918f-a4380eed4bdc" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfAssetsAxis_019c26eb-a9ee-7d1e-af02-cb91f7b950a2" xlink:to="loc_ifrs-full_ClassesOfAssetsDomain_019c26eb-a9ee-78fe-918f-a4380eed4bdc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherAssetsMember_019c26f1-67f9-76b4-bfea-286d8c30db9a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfAssetsDomain_019c26eb-a9ee-78fe-918f-a4380eed4bdc" xlink:to="loc_ifrs-full_OtherAssetsMember_019c26f1-67f9-76b4-bfea-286d8c30db9a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LevelsOfFairValueHierarchyAxis_019c26ec-f8b1-73a2-831c-379f7f3231d5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LevelsOfFairValueHierarchyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019c26ea-cc84-72d6-b73c-1d983adc2ad7" xlink:to="loc_ifrs-full_LevelsOfFairValueHierarchyAxis_019c26ec-f8b1-73a2-831c-379f7f3231d5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LevelsOfFairValueHierarchyDomain_019c26ec-f8b1-73a2-831c-379f7f3231d5_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LevelsOfFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_LevelsOfFairValueHierarchyAxis_019c26ec-f8b1-73a2-831c-379f7f3231d5" xlink:to="loc_ifrs-full_LevelsOfFairValueHierarchyDomain_019c26ec-f8b1-73a2-831c-379f7f3231d5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LevelsOfFairValueHierarchyDomain_019c26ec-f8b1-7533-baee-6ba37d4b321c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LevelsOfFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_LevelsOfFairValueHierarchyAxis_019c26ec-f8b1-73a2-831c-379f7f3231d5" xlink:to="loc_ifrs-full_LevelsOfFairValueHierarchyDomain_019c26ec-f8b1-7533-baee-6ba37d4b321c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Level1OfFairValueHierarchyMember_019c26ed-126c-7d0c-8608-3dbdc648f628" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Level1OfFairValueHierarchyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_LevelsOfFairValueHierarchyDomain_019c26ec-f8b1-7533-baee-6ba37d4b321c" xlink:to="loc_ifrs-full_Level1OfFairValueHierarchyMember_019c26ed-126c-7d0c-8608-3dbdc648f628" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Level3OfFairValueHierarchyMember_019d1c4a-50b3-7af7-9e09-1d907a702062" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Level3OfFairValueHierarchyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_LevelsOfFairValueHierarchyDomain_019c26ec-f8b1-7533-baee-6ba37d4b321c" xlink:to="loc_ifrs-full_Level3OfFairValueHierarchyMember_019d1c4a-50b3-7af7-9e09-1d907a702062" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019d1c4c-0586-7547-850f-afaac5c5e396" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019c26ea-cc84-72d6-b73c-1d983adc2ad7" xlink:to="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019d1c4c-0586-7547-850f-afaac5c5e396" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019d1c4c-0586-7547-850f-afaac5c5e396_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019d1c4c-0586-7547-850f-afaac5c5e396" xlink:to="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019d1c4c-0586-7547-850f-afaac5c5e396_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019d1c4c-0586-71a1-ac97-7f0a6253b020" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019d1c4c-0586-7547-850f-afaac5c5e396" xlink:to="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019d1c4c-0586-71a1-ac97-7f0a6253b020" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019c26f6-ae87-7423-bb61-49bebc2cbea2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInAssociatesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019d1c4c-0586-7547-850f-afaac5c5e396" xlink:to="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019c26f6-ae87-7423-bb61-49bebc2cbea2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_VersametMember_019c26f6-ceb6-7479-8ab0-4043dfbde537" xlink:href="eqx-20251231.xsd#eqx_VersametMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019c26f6-ae87-7423-bb61-49bebc2cbea2" xlink:to="loc_eqx_VersametMember_019c26f6-ceb6-7479-8ab0-4043dfbde537" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BearCreekMiningCorporationMember_019c26f7-0291-7eb2-b572-c5aaaeed09a6" xlink:href="eqx-20251231.xsd#eqx_BearCreekMiningCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_SignificantInvestmentsInAssociatesDomain_019c26f6-ae87-7423-bb61-49bebc2cbea2" xlink:to="loc_eqx_BearCreekMiningCorporationMember_019c26f7-0291-7eb2-b572-c5aaaeed09a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TransfersOutOfLevel3OfFairValueHierarchyAssets_019c26ea-cc84-7332-9ee7-0d025cf9ffa6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TransfersOutOfLevel3OfFairValueHierarchyAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019c26ea-cc84-756c-b712-6967a5a125fe" xlink:to="loc_ifrs-full_TransfersOutOfLevel3OfFairValueHierarchyAssets_019c26ea-cc84-7332-9ee7-0d025cf9ffa6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TransfersIntoLevel3OfFairValueHierarchyAssets_019c26f2-52f5-7009-acfc-1a67b15b42c5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TransfersIntoLevel3OfFairValueHierarchyAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019c26ea-cc84-756c-b712-6967a5a125fe" xlink:to="loc_ifrs-full_TransfersIntoLevel3OfFairValueHierarchyAssets_019c26f2-52f5-7009-acfc-1a67b15b42c5" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEMEASUREMENTSScheduleofFinancialAssetsandLiabilitiesNotMeasuredatFairValueDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#FINANCIALINSTRUMENTSANDFAIRVALUEMEASUREMENTSScheduleofFinancialAssetsandLiabilitiesNotMeasuredatFairValueDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/FINANCIALINSTRUMENTSANDFAIRVALUEMEASUREMENTSScheduleofFinancialAssetsandLiabilitiesNotMeasuredatFairValueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019b47d6-45f6-7635-95ed-ad2779fd4fd0" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019b47d6-45f6-76c9-8099-fb7054b72ee5" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019b47d6-45f6-7635-95ed-ad2779fd4fd0" xlink:to="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019b47d6-45f6-76c9-8099-fb7054b72ee5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameAxis_019b47d6-45f6-71e1-8ccf-4307cd33de91" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019b47d6-45f6-76c9-8099-fb7054b72ee5" xlink:to="loc_ifrs-full_BorrowingsByNameAxis_019b47d6-45f6-71e1-8ccf-4307cd33de91" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-45f6-71e1-8ccf-4307cd33de91_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019b47d6-45f6-71e1-8ccf-4307cd33de91" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-45f6-71e1-8ccf-4307cd33de91_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-45f6-71eb-9ce6-7145399e3b96" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019b47d6-45f6-71e1-8ccf-4307cd33de91" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-45f6-71eb-9ce6-7145399e3b96" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CreditFacilityMember_019b47d6-45f6-74c7-8fad-f60b9e3ed684" xlink:href="eqx-20251231.xsd#eqx_CreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-45f6-71eb-9ce6-7145399e3b96" xlink:to="loc_eqx_CreditFacilityMember_019b47d6-45f6-74c7-8fad-f60b9e3ed684" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SprottLoanMember_019b9c00-efaf-7a71-b7da-ee6b711dee62" xlink:href="eqx-20251231.xsd#eqx_SprottLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-45f6-71eb-9ce6-7145399e3b96" xlink:to="loc_eqx_SprottLoanMember_019b9c00-efaf-7a71-b7da-ee6b711dee62" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_TwoThousandAndTwentyThreeConvertibleNotesMember_019b47d6-45f6-7051-a421-8fe4c3d93717" xlink:href="eqx-20251231.xsd#eqx_TwoThousandAndTwentyThreeConvertibleNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-45f6-71eb-9ce6-7145399e3b96" xlink:to="loc_eqx_TwoThousandAndTwentyThreeConvertibleNotesMember_019b47d6-45f6-7051-a421-8fe4c3d93717" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_TwoThousandAndTwentyFiveConvertibleNotesMember_019b9c00-bc1b-769e-85f8-d5ce003824ae" xlink:href="eqx-20251231.xsd#eqx_TwoThousandAndTwentyFiveConvertibleNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-45f6-71eb-9ce6-7145399e3b96" xlink:to="loc_eqx_TwoThousandAndTwentyFiveConvertibleNotesMember_019b9c00-bc1b-769e-85f8-d5ce003824ae" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_TwoThousandAndTwentyConvertibleNotesMember_019b47d6-45f6-7db1-a635-ea3134c7cafc" xlink:href="eqx-20251231.xsd#eqx_TwoThousandAndTwentyConvertibleNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-45f6-71eb-9ce6-7145399e3b96" xlink:to="loc_eqx_TwoThousandAndTwentyConvertibleNotesMember_019b47d6-45f6-7db1-a635-ea3134c7cafc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EquipmentFacilityMember_019b47d6-45f6-7029-839d-e0f6ff1114bd" xlink:href="eqx-20251231.xsd#eqx_EquipmentFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b47d6-45f6-71eb-9ce6-7145399e3b96" xlink:to="loc_eqx_EquipmentFacilityMember_019b47d6-45f6-7029-839d-e0f6ff1114bd" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-45f6-725d-a83a-fd7a9cbf9da9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable_019b47d6-45f6-76c9-8099-fb7054b72ee5" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-45f6-725d-a83a-fd7a9cbf9da9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f6-725d-a83a-fd7a9cbf9da9_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-45f6-725d-a83a-fd7a9cbf9da9" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f6-725d-a83a-fd7a9cbf9da9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f6-7ab1-94ed-225044e752a3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-45f6-725d-a83a-fd7a9cbf9da9" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f6-7ab1-94ed-225044e752a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_LoansAndBorrowingsMember_019b47d6-45f6-71ec-a79e-bbdbd672f7dc" xlink:href="eqx-20251231.xsd#eqx_LoansAndBorrowingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f6-7ab1-94ed-225044e752a3" xlink:to="loc_eqx_LoansAndBorrowingsMember_019b47d6-45f6-71ec-a79e-bbdbd672f7dc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsLiabilityComponentMember_019b47d6-45f6-7001-9920-1cc0c2c91d04" xlink:href="eqx-20251231.xsd#eqx_BorrowingsLiabilityComponentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f6-7ab1-94ed-225044e752a3" xlink:to="loc_eqx_BorrowingsLiabilityComponentMember_019b47d6-45f6-7001-9920-1cc0c2c91d04" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsEquityComponentMember_019b47d6-45f6-7c3d-a3c5-438a642126b4" xlink:href="eqx-20251231.xsd#eqx_BorrowingsEquityComponentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f6-7ab1-94ed-225044e752a3" xlink:to="loc_eqx_BorrowingsEquityComponentMember_019b47d6-45f6-7c3d-a3c5-438a642126b4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialLiabilities_019b47d6-45f6-7869-8519-0637c514012a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019b47d6-45f6-7635-95ed-ad2779fd4fd0" xlink:to="loc_ifrs-full_FinancialLiabilities_019b47d6-45f6-7869-8519-0637c514012a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialLiabilitiesAtFairValue_019b47d6-45f6-7230-b4b8-7f188bd3ed3f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilitiesAtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems_019b47d6-45f6-7635-95ed-ad2779fd4fd0" xlink:to="loc_ifrs-full_FinancialLiabilitiesAtFairValue_019b47d6-45f6-7230-b4b8-7f188bd3ed3f" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/FINANCIALINSTRUMENTRISKSANDRISKMANAGEMENTAdditionalInformationDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#FINANCIALINSTRUMENTRISKSANDRISKMANAGEMENTAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/FINANCIALINSTRUMENTRISKSANDRISKMANAGEMENTAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_019b9c55-d827-727f-bc77-d0c2260b67bb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFinancialAssetsTable_019b47d6-45f6-76fd-803e-e3cec86aed29" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_019b9c55-d827-727f-bc77-d0c2260b67bb" xlink:to="loc_ifrs-full_DisclosureOfFinancialAssetsTable_019b47d6-45f6-76fd-803e-e3cec86aed29" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameAxis_019b9c56-8b8b-7faa-9211-bf51c1300834" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsTable_019b47d6-45f6-76fd-803e-e3cec86aed29" xlink:to="loc_ifrs-full_BorrowingsByNameAxis_019b9c56-8b8b-7faa-9211-bf51c1300834" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019b9c56-8b8b-7faa-9211-bf51c1300834_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019b9c56-8b8b-7faa-9211-bf51c1300834" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019b9c56-8b8b-7faa-9211-bf51c1300834_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameDomain_019b9c56-8b8b-7425-92bc-9f6f5abc8013" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BorrowingsByNameAxis_019b9c56-8b8b-7faa-9211-bf51c1300834" xlink:to="loc_ifrs-full_BorrowingsByNameDomain_019b9c56-8b8b-7425-92bc-9f6f5abc8013" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_RevolvingCreditFacility1Member_019b9c56-8b8b-72a6-8b2f-1b8efcc42b8b" xlink:href="eqx-20251231.xsd#eqx_RevolvingCreditFacility1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BorrowingsByNameDomain_019b9c56-8b8b-7425-92bc-9f6f5abc8013" xlink:to="loc_eqx_RevolvingCreditFacility1Member_019b9c56-8b8b-72a6-8b2f-1b8efcc42b8b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CurrencyAxis_019b9c56-d6ce-7e45-9008-86f40383b45b" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CurrencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsTable_019b47d6-45f6-76fd-803e-e3cec86aed29" xlink:to="loc_srt_CurrencyAxis_019b9c56-d6ce-7e45-9008-86f40383b45b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain_019b9c56-d6ce-7e45-9008-86f40383b45b_default" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_AllCurrenciesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CurrencyAxis_019b9c56-d6ce-7e45-9008-86f40383b45b" xlink:to="loc_currency_AllCurrenciesDomain_019b9c56-d6ce-7e45-9008-86f40383b45b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain_019b9c56-d6ce-70ab-8f0f-b4d09ad7a97e" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_AllCurrenciesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CurrencyAxis_019b9c56-d6ce-7e45-9008-86f40383b45b" xlink:to="loc_currency_AllCurrenciesDomain_019b9c56-d6ce-70ab-8f0f-b4d09ad7a97e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CADAndMXNMember_019d1cbd-8017-71bc-909a-399e513210f1" xlink:href="eqx-20251231.xsd#eqx_CADAndMXNMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_currency_AllCurrenciesDomain_019b9c56-d6ce-70ab-8f0f-b4d09ad7a97e" xlink:to="loc_eqx_CADAndMXNMember_019d1cbd-8017-71bc-909a-399e513210f1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfRisksAxis_019b9c56-d6ce-7995-ad04-a94634eb8486" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsTable_019b47d6-45f6-76fd-803e-e3cec86aed29" xlink:to="loc_ifrs-full_TypesOfRisksAxis_019b9c56-d6ce-7995-ad04-a94634eb8486" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfRisksDomain_019b9c56-d6ce-7995-ad04-a94634eb8486_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfRisksAxis_019b9c56-d6ce-7995-ad04-a94634eb8486" xlink:to="loc_ifrs-full_TypesOfRisksDomain_019b9c56-d6ce-7995-ad04-a94634eb8486_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfRisksDomain_019b9c56-d6ce-7806-87bd-553d67ced500" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfRisksAxis_019b9c56-d6ce-7995-ad04-a94634eb8486" xlink:to="loc_ifrs-full_TypesOfRisksDomain_019b9c56-d6ce-7806-87bd-553d67ced500" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrencyRiskMember_019b9c56-d6ce-7bf9-b942-a6ebf326ef09" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrencyRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfRisksDomain_019b9c56-d6ce-7806-87bd-553d67ced500" xlink:to="loc_ifrs-full_CurrencyRiskMember_019b9c56-d6ce-7bf9-b942-a6ebf326ef09" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestRateRiskMember_019b9c56-d6ce-7ee3-a478-1ca60e3b5762" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestRateRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfRisksDomain_019b9c56-d6ce-7806-87bd-553d67ced500" xlink:to="loc_ifrs-full_InterestRateRiskMember_019b9c56-d6ce-7ee3-a478-1ca60e3b5762" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherPriceRiskMember_019b9c56-d6ce-7c4a-9af4-86aa1587fac4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherPriceRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfRisksDomain_019b9c56-d6ce-7806-87bd-553d67ced500" xlink:to="loc_ifrs-full_OtherPriceRiskMember_019b9c56-d6ce-7c4a-9af4-86aa1587fac4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfInterestRatesAxis_019b9c56-d6ce-71d4-8b62-9a6abd6ee58f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfInterestRatesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsTable_019b47d6-45f6-76fd-803e-e3cec86aed29" xlink:to="loc_ifrs-full_TypesOfInterestRatesAxis_019b9c56-d6ce-71d4-8b62-9a6abd6ee58f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfInterestRatesDomain_019b9c56-d6ce-71d4-8b62-9a6abd6ee58f_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfInterestRatesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfInterestRatesAxis_019b9c56-d6ce-71d4-8b62-9a6abd6ee58f" xlink:to="loc_ifrs-full_TypesOfInterestRatesDomain_019b9c56-d6ce-71d4-8b62-9a6abd6ee58f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfInterestRatesDomain_019b9c56-d6ce-7bda-aa45-1af1949bbdf3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfInterestRatesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfInterestRatesAxis_019b9c56-d6ce-71d4-8b62-9a6abd6ee58f" xlink:to="loc_ifrs-full_TypesOfInterestRatesDomain_019b9c56-d6ce-7bda-aa45-1af1949bbdf3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FloatingInterestRateMember_019b9c56-d6ce-7ae5-a641-cc1f65c64ea3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FloatingInterestRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfInterestRatesDomain_019b9c56-d6ce-7bda-aa45-1af1949bbdf3" xlink:to="loc_ifrs-full_FloatingInterestRateMember_019b9c56-d6ce-7ae5-a641-cc1f65c64ea3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialInstrumentsAxis_019b9c56-d6ce-720e-9a60-68a274076521" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsTable_019b47d6-45f6-76fd-803e-e3cec86aed29" xlink:to="loc_ifrs-full_ClassesOfFinancialInstrumentsAxis_019b9c56-d6ce-720e-9a60-68a274076521" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialInstrumentsDomain_019b9c56-d6ce-720e-9a60-68a274076521_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialInstrumentsAxis_019b9c56-d6ce-720e-9a60-68a274076521" xlink:to="loc_ifrs-full_ClassesOfFinancialInstrumentsDomain_019b9c56-d6ce-720e-9a60-68a274076521_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialInstrumentsDomain_019b9c56-d6ce-7813-958d-ead4661e8b26" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialInstrumentsAxis_019b9c56-d6ce-720e-9a60-68a274076521" xlink:to="loc_ifrs-full_ClassesOfFinancialInstrumentsDomain_019b9c56-d6ce-7813-958d-ead4661e8b26" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_MarketableSecuritiesAndWarrantsMember_019b9c56-d6ce-79ff-91bc-dd29a8bfac55" xlink:href="eqx-20251231.xsd#eqx_MarketableSecuritiesAndWarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialInstrumentsDomain_019b9c56-d6ce-7813-958d-ead4661e8b26" xlink:to="loc_eqx_MarketableSecuritiesAndWarrantsMember_019b9c56-d6ce-79ff-91bc-dd29a8bfac55" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_GoldDeliveriesMember_019b9c56-d6ce-76b9-8aab-7ec794816092" xlink:href="eqx-20251231.xsd#eqx_GoldDeliveriesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialInstrumentsDomain_019b9c56-d6ce-7813-958d-ead4661e8b26" xlink:to="loc_eqx_GoldDeliveriesMember_019b9c56-d6ce-76b9-8aab-7ec794816092" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MaximumExposureToCreditRisk_019b9c55-d827-7b72-99a4-2d7d5ac8ac66" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MaximumExposureToCreditRisk"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_019b9c55-d827-727f-bc77-d0c2260b67bb" xlink:to="loc_ifrs-full_MaximumExposureToCreditRisk_019b9c55-d827-7b72-99a4-2d7d5ac8ac66" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_BorrowingsMaximumCapacity_019b9c56-8b8b-7a4c-a100-e1383fcb2ebc" xlink:href="eqx-20251231.xsd#eqx_BorrowingsMaximumCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_019b9c55-d827-727f-bc77-d0c2260b67bb" xlink:to="loc_eqx_BorrowingsMaximumCapacity_019b9c56-8b8b-7a4c-a100-e1383fcb2ebc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_UndrawnBorrowingFacilities_019b9c56-8b8b-76e6-8f56-87323ae9fcee" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UndrawnBorrowingFacilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_019b9c55-d827-727f-bc77-d0c2260b67bb" xlink:to="loc_ifrs-full_UndrawnBorrowingFacilities_019b9c56-8b8b-76e6-8f56-87323ae9fcee" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariablePercent_019b9c56-d6ce-7f31-9179-d013ad20a933" xlink:href="eqx-20251231.xsd#eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariablePercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_019b9c55-d827-727f-bc77-d0c2260b67bb" xlink:to="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariablePercent_019b9c56-d6ce-7f31-9179-d013ad20a933" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnAssets_019bf3c3-9edb-7d77-bd1a-a5385beda5d0" xlink:href="eqx-20251231.xsd#eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_019b9c55-d827-727f-bc77-d0c2260b67bb" xlink:to="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnAssets_019bf3c3-9edb-7d77-bd1a-a5385beda5d0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnNetIncome_019b9c56-d6ce-7673-b057-931d1f2140d4" xlink:href="eqx-20251231.xsd#eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnNetIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_019b9c55-d827-727f-bc77-d0c2260b67bb" xlink:to="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnNetIncome_019b9c56-d6ce-7673-b057-931d1f2140d4" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnAssets_019bf3c8-1143-7840-9648-9c7e5366ed10" xlink:href="eqx-20251231.xsd#eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_019b9c55-d827-727f-bc77-d0c2260b67bb" xlink:to="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnAssets_019bf3c8-1143-7840-9648-9c7e5366ed10" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnNetIncome_019b9c56-d6ce-7243-89d5-725580d9bf29" xlink:href="eqx-20251231.xsd#eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnNetIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_019b9c55-d827-727f-bc77-d0c2260b67bb" xlink:to="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnNetIncome_019b9c56-d6ce-7243-89d5-725580d9bf29" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariableImpactOnNetIncome_019b9c56-d6ce-7455-8350-6cde0ee3d56e" xlink:href="eqx-20251231.xsd#eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariableImpactOnNetIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_019b9c55-d827-727f-bc77-d0c2260b67bb" xlink:to="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariableImpactOnNetIncome_019b9c56-d6ce-7455-8350-6cde0ee3d56e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnOtherComprehensiveIncome_019b9c56-d6ce-7707-b6e4-2cac91b4268e" xlink:href="eqx-20251231.xsd#eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnOtherComprehensiveIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_019b9c55-d827-727f-bc77-d0c2260b67bb" xlink:to="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableImpactOnOtherComprehensiveIncome_019b9c56-d6ce-7707-b6e4-2cac91b4268e" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnOtherComprehensiveIncome_019b9c56-d6ce-7bc1-b2fa-8785d98e5c86" xlink:href="eqx-20251231.xsd#eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnOtherComprehensiveIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_019b9c55-d827-727f-bc77-d0c2260b67bb" xlink:to="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableImpactOnOtherComprehensiveIncome_019b9c56-d6ce-7bc1-b2fa-8785d98e5c86" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariableAmount_019c22c1-05c8-7151-bbb0-37f1d1d7b1ed" xlink:href="eqx-20251231.xsd#eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariableAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsLineItems_019b9c55-d827-727f-bc77-d0c2260b67bb" xlink:to="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariableAmount_019c22c1-05c8-7151-bbb0-37f1d1d7b1ed" xlink:type="arc" order="11"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/FINANCIALINSTRUMENTRISKSANDRISKMANAGEMENTScheduleofContractualMaturitiesDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#FINANCIALINSTRUMENTRISKSANDRISKMANAGEMENTScheduleofContractualMaturitiesDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/FINANCIALINSTRUMENTRISKSANDRISKMANAGEMENTScheduleofContractualMaturitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesLineItems_019b47d6-45f7-70e9-a90d-7acf0760c441" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesTable_019b47d6-45f7-73b1-8673-5aade155f68b" xlink:href="eqx-20251231.xsd#eqx_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesLineItems_019b47d6-45f7-70e9-a90d-7acf0760c441" xlink:to="loc_eqx_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesTable_019b47d6-45f7-73b1-8673-5aade155f68b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfRisksAxis_019b47d6-45f7-75b6-90ca-906855a6bbe9" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesTable_019b47d6-45f7-73b1-8673-5aade155f68b" xlink:to="loc_ifrs-full_TypesOfRisksAxis_019b47d6-45f7-75b6-90ca-906855a6bbe9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfRisksDomain_019b47d6-45f7-75b6-90ca-906855a6bbe9_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfRisksAxis_019b47d6-45f7-75b6-90ca-906855a6bbe9" xlink:to="loc_ifrs-full_TypesOfRisksDomain_019b47d6-45f7-75b6-90ca-906855a6bbe9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfRisksDomain_019b47d6-45f7-74b9-9f4a-e0346f47e9f6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfRisksAxis_019b47d6-45f7-75b6-90ca-906855a6bbe9" xlink:to="loc_ifrs-full_TypesOfRisksDomain_019b47d6-45f7-74b9-9f4a-e0346f47e9f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LiquidityRiskMember_019b47d6-45f7-763d-b0d9-d092b28bd972" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LiquidityRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfRisksDomain_019b47d6-45f7-74b9-9f4a-e0346f47e9f6" xlink:to="loc_ifrs-full_LiquidityRiskMember_019b47d6-45f7-763d-b0d9-d092b28bd972" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MaturityAxis_019b47d6-45f7-7a4f-a90a-b16307228fcb" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MaturityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesTable_019b47d6-45f7-73b1-8673-5aade155f68b" xlink:to="loc_ifrs-full_MaturityAxis_019b47d6-45f7-7a4f-a90a-b16307228fcb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MaturityDomain_019b47d6-45f7-7a4f-a90a-b16307228fcb_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MaturityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_MaturityAxis_019b47d6-45f7-7a4f-a90a-b16307228fcb" xlink:to="loc_ifrs-full_MaturityDomain_019b47d6-45f7-7a4f-a90a-b16307228fcb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MaturityDomain_019b47d6-45f7-753e-a64e-a5070910b71a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MaturityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_MaturityAxis_019b47d6-45f7-7a4f-a90a-b16307228fcb" xlink:to="loc_ifrs-full_MaturityDomain_019b47d6-45f7-753e-a64e-a5070910b71a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NotLaterThanOneYearMember_019b47d6-45f7-7bde-befd-f1410c23f2e8" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NotLaterThanOneYearMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_MaturityDomain_019b47d6-45f7-753e-a64e-a5070910b71a" xlink:to="loc_ifrs-full_NotLaterThanOneYearMember_019b47d6-45f7-7bde-befd-f1410c23f2e8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember_019b47d6-45f7-70ff-9452-68c1e516267f" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_MaturityDomain_019b47d6-45f7-753e-a64e-a5070910b71a" xlink:to="loc_ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember_019b47d6-45f7-70ff-9452-68c1e516267f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember_019b47d6-45f7-7f3c-b3e2-dd158597d9e6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_MaturityDomain_019b47d6-45f7-753e-a64e-a5070910b71a" xlink:to="loc_ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember_019b47d6-45f7-7f3c-b3e2-dd158597d9e6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember_019b47d6-45f7-72f5-9338-899edc9cd10a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_MaturityDomain_019b47d6-45f7-753e-a64e-a5070910b71a" xlink:to="loc_ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember_019b47d6-45f7-72f5-9338-899edc9cd10a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LaterThanFourYearsAndNotLaterThanFiveYearsMember_019b47d6-45f7-723b-9076-34e3e9df9b6a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanFourYearsAndNotLaterThanFiveYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_MaturityDomain_019b47d6-45f7-753e-a64e-a5070910b71a" xlink:to="loc_ifrs-full_LaterThanFourYearsAndNotLaterThanFiveYearsMember_019b47d6-45f7-723b-9076-34e3e9df9b6a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LaterThanFiveYearsMember_019b47d6-45f7-7161-943a-cad33263f629" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanFiveYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_MaturityDomain_019b47d6-45f7-753e-a64e-a5070910b71a" xlink:to="loc_ifrs-full_LaterThanFiveYearsMember_019b47d6-45f7-7161-943a-cad33263f629" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherPayables_019b47d6-45f7-78c3-b3da-23570f24e8fd" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherPayables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesLineItems_019b47d6-45f7-70e9-a90d-7acf0760c441" xlink:to="loc_ifrs-full_TradeAndOtherPayables_019b47d6-45f7-78c3-b3da-23570f24e8fd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Borrowings_019b47d6-45f7-7df3-bc47-b422149666cf" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Borrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesLineItems_019b47d6-45f7-70e9-a90d-7acf0760c441" xlink:to="loc_ifrs-full_Borrowings_019b47d6-45f7-7df3-bc47-b422149666cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities_019b47d6-45f7-7855-9670-f9c9509b80f2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesLineItems_019b47d6-45f7-70e9-a90d-7acf0760c441" xlink:to="loc_ifrs-full_DerivativeFinancialLiabilities_019b47d6-45f7-7855-9670-f9c9509b80f2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LeaseLiabilities_019b47d6-45f7-78e0-9583-9a4c72b39005" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LeaseLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesLineItems_019b47d6-45f7-70e9-a90d-7acf0760c441" xlink:to="loc_ifrs-full_LeaseLiabilities_019b47d6-45f7-78e0-9583-9a4c72b39005" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherFinancialLiabilities_019b47d6-45f7-7a14-96e9-3e24ca64e094" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherFinancialLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesLineItems_019b47d6-45f7-70e9-a90d-7acf0760c441" xlink:to="loc_ifrs-full_OtherFinancialLiabilities_019b47d6-45f7-7a14-96e9-3e24ca64e094" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ReclamationObligations_019b47d6-45f7-7b2e-9b45-bca50b67dfaa" xlink:href="eqx-20251231.xsd#eqx_ReclamationObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesLineItems_019b47d6-45f7-70e9-a90d-7acf0760c441" xlink:to="loc_eqx_ReclamationObligations_019b47d6-45f7-7b2e-9b45-bca50b67dfaa" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PurchaseCommitments_019b47d6-45f7-7037-b1f4-d7d9a7adcfbd" xlink:href="eqx-20251231.xsd#eqx_PurchaseCommitments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesLineItems_019b47d6-45f7-70e9-a90d-7acf0760c441" xlink:to="loc_eqx_PurchaseCommitments_019b47d6-45f7-7037-b1f4-d7d9a7adcfbd" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_OtherOperatingCommitments_019b47d6-45f7-7cf7-b714-fcb36efd8a4d" xlink:href="eqx-20251231.xsd#eqx_OtherOperatingCommitments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesLineItems_019b47d6-45f7-70e9-a90d-7acf0760c441" xlink:to="loc_eqx_OtherOperatingCommitments_019b47d6-45f7-7cf7-b714-fcb36efd8a4d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContractualCapitalCommitments_019b47d6-45f7-79df-9a6f-a49feafa6912" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContractualCapitalCommitments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_DisclosureOfMaturityAnalysisForDerivativeAndNonDerivativeFinancialLiabilitiesLineItems_019b47d6-45f7-70e9-a90d-7acf0760c441" xlink:to="loc_ifrs-full_ContractualCapitalCommitments_019b47d6-45f7-79df-9a6f-a49feafa6912" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/FINANCIALINSTRUMENTRISKSANDRISKMANAGEMENTScheduleofExposuretoCurrencyRiskDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#FINANCIALINSTRUMENTRISKSANDRISKMANAGEMENTScheduleofExposuretoCurrencyRiskDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/FINANCIALINSTRUMENTRISKSANDRISKMANAGEMENTScheduleofExposuretoCurrencyRiskDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFinancialLiabilitiesLineItems_019b47d6-45f7-7d41-aa32-41ff7b17f3c6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialLiabilitiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFinancialAssetsTable_019b47d6-45f7-7ab6-ab3e-459ed850c39d" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfFinancialLiabilitiesLineItems_019b47d6-45f7-7d41-aa32-41ff7b17f3c6" xlink:to="loc_ifrs-full_DisclosureOfFinancialAssetsTable_019b47d6-45f7-7ab6-ab3e-459ed850c39d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CurrencyAxis_019b47d6-45f7-7501-b55d-28b04084c040" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CurrencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsTable_019b47d6-45f7-7ab6-ab3e-459ed850c39d" xlink:to="loc_srt_CurrencyAxis_019b47d6-45f7-7501-b55d-28b04084c040" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain_019b47d6-45f7-7501-b55d-28b04084c040_default" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_AllCurrenciesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CurrencyAxis_019b47d6-45f7-7501-b55d-28b04084c040" xlink:to="loc_currency_AllCurrenciesDomain_019b47d6-45f7-7501-b55d-28b04084c040_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain_019b47d6-45f7-7abe-aac9-b191db6dfdf3" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_AllCurrenciesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CurrencyAxis_019b47d6-45f7-7501-b55d-28b04084c040" xlink:to="loc_currency_AllCurrenciesDomain_019b47d6-45f7-7abe-aac9-b191db6dfdf3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_CAD_019b47d6-45f7-72a3-8f40-a105128d59d7" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_CAD"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_currency_AllCurrenciesDomain_019b47d6-45f7-7abe-aac9-b191db6dfdf3" xlink:to="loc_currency_CAD_019b47d6-45f7-72a3-8f40-a105128d59d7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_NIO_019b9c43-105d-74c7-a5dc-3fff8ae93312" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_NIO"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_currency_AllCurrenciesDomain_019b47d6-45f7-7abe-aac9-b191db6dfdf3" xlink:to="loc_currency_NIO_019b9c43-105d-74c7-a5dc-3fff8ae93312" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_currency_MXN_019b47d6-45f7-74b6-b6f8-25cd44ef447b" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_MXN"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_currency_AllCurrenciesDomain_019b47d6-45f7-7abe-aac9-b191db6dfdf3" xlink:to="loc_currency_MXN_019b47d6-45f7-74b6-b6f8-25cd44ef447b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfRisksAxis_019b47d6-45f7-73b1-936f-7638d664dd9e" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsTable_019b47d6-45f7-7ab6-ab3e-459ed850c39d" xlink:to="loc_ifrs-full_TypesOfRisksAxis_019b47d6-45f7-73b1-936f-7638d664dd9e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfRisksDomain_019b47d6-45f7-73b1-936f-7638d664dd9e_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_TypesOfRisksAxis_019b47d6-45f7-73b1-936f-7638d664dd9e" xlink:to="loc_ifrs-full_TypesOfRisksDomain_019b47d6-45f7-73b1-936f-7638d664dd9e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfRisksDomain_019b47d6-45f7-7c46-b7e7-11cfd053f8d2" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_TypesOfRisksAxis_019b47d6-45f7-73b1-936f-7638d664dd9e" xlink:to="loc_ifrs-full_TypesOfRisksDomain_019b47d6-45f7-7c46-b7e7-11cfd053f8d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrencyRiskMember_019b47d6-45f7-723b-bbbb-30051b37ddf3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrencyRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_TypesOfRisksDomain_019b47d6-45f7-7c46-b7e7-11cfd053f8d2" xlink:to="loc_ifrs-full_CurrencyRiskMember_019b47d6-45f7-723b-bbbb-30051b37ddf3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019b47d6-45f7-73ba-be9a-a2531fc5bdd1" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsTable_019b47d6-45f7-7ab6-ab3e-459ed850c39d" xlink:to="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019b47d6-45f7-73ba-be9a-a2531fc5bdd1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f7-73ba-be9a-a2531fc5bdd1_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019b47d6-45f7-73ba-be9a-a2531fc5bdd1" xlink:to="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f7-73ba-be9a-a2531fc5bdd1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f7-7e96-a842-6d2ab0f5a9a3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsAxis_019b47d6-45f7-73ba-be9a-a2531fc5bdd1" xlink:to="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f7-7e96-a842-6d2ab0f5a9a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CashAndCashEquivalentMember_019b47d6-45f7-7b2b-87b9-2068e6fc83b9" xlink:href="eqx-20251231.xsd#eqx_CashAndCashEquivalentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f7-7e96-a842-6d2ab0f5a9a3" xlink:to="loc_eqx_CashAndCashEquivalentMember_019b47d6-45f7-7b2b-87b9-2068e6fc83b9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradingSecuritiesMember_019b47d6-45f7-79c0-b23e-837c004054f6" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradingSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f7-7e96-a842-6d2ab0f5a9a3" xlink:to="loc_ifrs-full_TradingSecuritiesMember_019b47d6-45f7-79c0-b23e-837c004054f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativesMember_019b47d6-45f7-7e29-8d59-99ba0c41f773" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f7-7e96-a842-6d2ab0f5a9a3" xlink:to="loc_ifrs-full_DerivativesMember_019b47d6-45f7-7e29-8d59-99ba0c41f773" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_RestrictedCashMember_019b47d6-45f7-75a5-9b24-9a2d1662a49a" xlink:href="eqx-20251231.xsd#eqx_RestrictedCashMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f7-7e96-a842-6d2ab0f5a9a3" xlink:to="loc_eqx_RestrictedCashMember_019b47d6-45f7-75a5-9b24-9a2d1662a49a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherAssetsMember_019b47d6-45f7-7015-92e9-6e2d85310b31" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsDomain_019b47d6-45f7-7e96-a842-6d2ab0f5a9a3" xlink:to="loc_ifrs-full_OtherAssetsMember_019b47d6-45f7-7015-92e9-6e2d85310b31" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-45f7-7069-b8bd-a698b4d5a009" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfFinancialAssetsTable_019b47d6-45f7-7ab6-ab3e-459ed850c39d" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-45f7-7069-b8bd-a698b4d5a009" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f7-7069-b8bd-a698b4d5a009_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-45f7-7069-b8bd-a698b4d5a009" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f7-7069-b8bd-a698b4d5a009_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f7-7eee-9362-bdd1c03b7831" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b47d6-45f7-7069-b8bd-a698b4d5a009" xlink:to="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f7-7eee-9362-bdd1c03b7831" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativesMember_019b47d6-45f7-7e0f-ac19-3ce9bcdf3f24" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f7-7eee-9362-bdd1c03b7831" xlink:to="loc_ifrs-full_DerivativesMember_019b47d6-45f7-7e0f-ac19-3ce9bcdf3f24" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AccountsPayableAndAccruedLiabilities1Member_019b47d6-45f7-7322-bd9a-76556d673d82" xlink:href="eqx-20251231.xsd#eqx_AccountsPayableAndAccruedLiabilities1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f7-7eee-9362-bdd1c03b7831" xlink:to="loc_eqx_AccountsPayableAndAccruedLiabilities1Member_019b47d6-45f7-7322-bd9a-76556d673d82" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LeaseLiabilitiesMember_019b47d6-45f7-7d19-bd65-a51c6088e550" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LeaseLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f7-7eee-9362-bdd1c03b7831" xlink:to="loc_ifrs-full_LeaseLiabilitiesMember_019b47d6-45f7-7d19-bd65-a51c6088e550" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_LoansAndBorrowingsMember_019c22bb-8ad5-7b1a-85b0-8296aa7b00dd" xlink:href="eqx-20251231.xsd#eqx_LoansAndBorrowingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b47d6-45f7-7eee-9362-bdd1c03b7831" xlink:to="loc_eqx_LoansAndBorrowingsMember_019c22bb-8ad5-7b1a-85b0-8296aa7b00dd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RiskExposureAssociatedWithInstrumentsSharingCharacteristic_019b47d6-45f7-7f7b-a575-7388840f7d0c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RiskExposureAssociatedWithInstrumentsSharingCharacteristic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialLiabilitiesLineItems_019b47d6-45f7-7d41-aa32-41ff7b17f3c6" xlink:to="loc_ifrs-full_RiskExposureAssociatedWithInstrumentsSharingCharacteristic_019b47d6-45f7-7f7b-a575-7388840f7d0c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariablePercent_019b47d6-45f7-7e4e-93eb-96bc25b03a56" xlink:href="eqx-20251231.xsd#eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariablePercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialLiabilitiesLineItems_019b47d6-45f7-7d41-aa32-41ff7b17f3c6" xlink:to="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariablePercent_019b47d6-45f7-7e4e-93eb-96bc25b03a56" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariableImpactOnNetIncome_019b47d6-45f7-7712-bada-9dfb883f9984" xlink:href="eqx-20251231.xsd#eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariableImpactOnNetIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfFinancialLiabilitiesLineItems_019b47d6-45f7-7d41-aa32-41ff7b17f3c6" xlink:to="loc_eqx_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariableImpactOnNetIncome_019b47d6-45f7-7712-bada-9dfb883f9984" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/CONTINGENCIESDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#CONTINGENCIESDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/CONTINGENCIESDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:href="eqx-20251231.xsd#eqx_ContractualObligationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ContractualObligationsTable_019c271d-82ee-7a86-96b0-fb0b893789fb" xlink:href="eqx-20251231.xsd#eqx_ContractualObligationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:to="loc_eqx_ContractualObligationsTable_019c271d-82ee-7a86-96b0-fb0b893789fb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis_019c2723-3d81-7fa4-a998-2494795c8ecf" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_ContractualObligationsTable_019c271d-82ee-7a86-96b0-fb0b893789fb" xlink:to="loc_ifrs-full_BusinessCombinationsAxis_019c2723-3d81-7fa4-a998-2494795c8ecf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019c2723-3d81-7fa4-a998-2494795c8ecf_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019c2723-3d81-7fa4-a998-2494795c8ecf" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019c2723-3d81-7fa4-a998-2494795c8ecf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain_019c2723-3d81-7918-97d9-e3f2d2f2ef30" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_BusinessCombinationsAxis_019c2723-3d81-7fa4-a998-2494795c8ecf" xlink:to="loc_ifrs-full_BusinessCombinationsDomain_019c2723-3d81-7918-97d9-e3f2d2f2ef30" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_CalibreAcquisitionMember_019c2724-1cd1-78c4-9e1a-71bc75965a1a" xlink:href="eqx-20251231.xsd#eqx_CalibreAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_BusinessCombinationsDomain_019c2723-3d81-7918-97d9-e3f2d2f2ef30" xlink:to="loc_eqx_CalibreAcquisitionMember_019c2724-1cd1-78c4-9e1a-71bc75965a1a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GeographicalAreasAxis_019c272a-ae30-7cab-a4d2-ff24cf726cd5" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_eqx_ContractualObligationsTable_019c271d-82ee-7a86-96b0-fb0b893789fb" xlink:to="loc_ifrs-full_GeographicalAreasAxis_019c272a-ae30-7cab-a4d2-ff24cf726cd5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GeographicalAreasDomain_019c272a-ae30-7cab-a4d2-ff24cf726cd5_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_GeographicalAreasAxis_019c272a-ae30-7cab-a4d2-ff24cf726cd5" xlink:to="loc_ifrs-full_GeographicalAreasDomain_019c272a-ae30-7cab-a4d2-ff24cf726cd5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GeographicalAreasDomain_019c272a-ae30-7abf-8967-d6db7a98c0ab" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_GeographicalAreasAxis_019c272a-ae30-7cab-a4d2-ff24cf726cd5" xlink:to="loc_ifrs-full_GeographicalAreasDomain_019c272a-ae30-7abf-8967-d6db7a98c0ab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_NI_019c272a-ae30-72b9-a0d2-8700437a8056" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_NI"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_GeographicalAreasDomain_019c272a-ae30-7abf-8967-d6db7a98c0ab" xlink:to="loc_country_NI_019c272a-ae30-72b9-a0d2-8700437a8056" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LegalProceedingsProvision_019c22d4-be10-72eb-9a8d-089aa1f967ab" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LegalProceedingsProvision"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:to="loc_ifrs-full_LegalProceedingsProvision_019c22d4-be10-72eb-9a8d-089aa1f967ab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods_019c2703-b5be-74e0-8505-cb21e54faab0" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:to="loc_ifrs-full_CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods_019c2703-b5be-74e0-8505-cb21e54faab0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EstimatedIncomeTaxLiabilityAccrual_019c2715-260b-73c5-a3e0-b67859eb5802" xlink:href="eqx-20251231.xsd#eqx_EstimatedIncomeTaxLiabilityAccrual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:to="loc_eqx_EstimatedIncomeTaxLiabilityAccrual_019c2715-260b-73c5-a3e0-b67859eb5802" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EstimatedIndemnityClaimAdditionalIncomeTaxPreviouslyAssessed_019c271d-82ee-7eee-a2a9-37b2b47156a5" xlink:href="eqx-20251231.xsd#eqx_EstimatedIndemnityClaimAdditionalIncomeTaxPreviouslyAssessed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:to="loc_eqx_EstimatedIndemnityClaimAdditionalIncomeTaxPreviouslyAssessed_019c271d-82ee-7eee-a2a9-37b2b47156a5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_IndemnificationAsset_019c271f-bd72-730d-aecd-abd5b3e26fc8" xlink:href="eqx-20251231.xsd#eqx_IndemnificationAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:to="loc_eqx_IndemnificationAsset_019c271f-bd72-730d-aecd-abd5b3e26fc8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_FairValueOfTaxObligationAcquired_019c22d4-febd-7971-b365-675156ccbd97" xlink:href="eqx-20251231.xsd#eqx_FairValueOfTaxObligationAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:to="loc_eqx_FairValueOfTaxObligationAcquired_019c22d4-febd-7971-b365-675156ccbd97" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SettlementAgreementTaxObligationPayable_019c2728-0571-751d-aa3e-798317c788bc" xlink:href="eqx-20251231.xsd#eqx_SettlementAgreementTaxObligationPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:to="loc_eqx_SettlementAgreementTaxObligationPayable_019c2728-0571-751d-aa3e-798317c788bc" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_SettlementAgreementInterestAndPenalties_019c2728-a2fd-78f9-a575-3f7214069b94" xlink:href="eqx-20251231.xsd#eqx_SettlementAgreementInterestAndPenalties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:to="loc_eqx_SettlementAgreementInterestAndPenalties_019c2728-a2fd-78f9-a575-3f7214069b94" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_PaymentsForIncomeTaxSettlementAgreement_019c2729-734e-75d1-af25-4cda905aea9c" xlink:href="eqx-20251231.xsd#eqx_PaymentsForIncomeTaxSettlementAgreement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:to="loc_eqx_PaymentsForIncomeTaxSettlementAgreement_019c2729-734e-75d1-af25-4cda905aea9c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxExpenseContinuingOperations_019c22d4-be10-7be3-b926-94be29685518" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:to="loc_ifrs-full_IncomeTaxExpenseContinuingOperations_019c22d4-be10-7be3-b926-94be29685518" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EstimatedTaxAmended_019c22d4-be10-7315-84e3-d5aedbe446c9" xlink:href="eqx-20251231.xsd#eqx_EstimatedTaxAmended"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:to="loc_eqx_EstimatedTaxAmended_019c22d4-be10-7315-84e3-d5aedbe446c9" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_AdditionalTaxExpenseIncome_019c22d4-e02d-7226-8362-73345b4e72aa" xlink:href="eqx-20251231.xsd#eqx_AdditionalTaxExpenseIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:to="loc_eqx_AdditionalTaxExpenseIncome_019c22d4-e02d-7226-8362-73345b4e72aa" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_EstimatedTaxAmendedNet_019c22d4-e02d-7b6e-82d8-e7b694954808" xlink:href="eqx-20251231.xsd#eqx_EstimatedTaxAmendedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:to="loc_eqx_EstimatedTaxAmendedNet_019c22d4-e02d-7b6e-82d8-e7b694954808" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_IncmeTaxAmountPayable_019c22d4-febd-7689-bf5b-1dd0a71bc527" xlink:href="eqx-20251231.xsd#eqx_IncmeTaxAmountPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:to="loc_eqx_IncmeTaxAmountPayable_019c22d4-febd-7689-bf5b-1dd0a71bc527" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeFromFinesAndPenalties_019c22d4-febd-7721-9b0e-52300de654a4" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncomeFromFinesAndPenalties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:to="loc_ifrs-full_IncomeFromFinesAndPenalties_019c22d4-febd-7721-9b0e-52300de654a4" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_IncomeTaxNetAmountPayable_019c22d4-febd-73b6-97c3-d98582f07ef6" xlink:href="eqx-20251231.xsd#eqx_IncomeTaxNetAmountPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_eqx_ContractualObligationsLineItems_019c271d-82ee-79fa-92e3-8441eeadb195" xlink:to="loc_eqx_IncomeTaxNetAmountPayable_019c22d4-febd-73b6-97c3-d98582f07ef6" xlink:type="arc" order="15"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://equinoxgold.com/role/SubsequentEventDetails" xlink:type="simple" xlink:href="eqx-20251231.xsd#SubsequentEventDetails"/>
  <link:definitionLink xlink:role="http://equinoxgold.com/role/SubsequentEventDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_019c99e0-d976-7d0b-ad2f-f0aa2d86350a" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable_019b47d6-45f7-721a-b295-fa3356b04e04" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_019c99e0-d976-7d0b-ad2f-f0aa2d86350a" xlink:to="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable_019b47d6-45f7-721a-b295-fa3356b04e04" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_019b47d6-45f7-738a-822d-6cd6ce7f0bc3" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable_019b47d6-45f7-721a-b295-fa3356b04e04" xlink:to="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_019b47d6-45f7-738a-822d-6cd6ce7f0bc3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_019b47d6-45f7-738a-822d-6cd6ce7f0bc3_default" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_019b47d6-45f7-738a-822d-6cd6ce7f0bc3" xlink:to="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_019b47d6-45f7-738a-822d-6cd6ce7f0bc3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_019b47d6-45f7-7540-911b-dfa0b0d1a748" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_019b47d6-45f7-738a-822d-6cd6ce7f0bc3" xlink:to="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_019b47d6-45f7-7540-911b-dfa0b0d1a748" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MajorOrdinaryShareTransactionsMember_019cafdf-c50c-7fb5-a295-16dfffdcdb8c" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MajorOrdinaryShareTransactionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_019b47d6-45f7-7540-911b-dfa0b0d1a748" xlink:to="loc_ifrs-full_MajorOrdinaryShareTransactionsMember_019cafdf-c50c-7fb5-a295-16dfffdcdb8c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DividendsPaidOrdinarySharesPerShare_019c99e0-d977-76d3-944d-49b50eeaa064" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DividendsPaidOrdinarySharesPerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_019c99e0-d976-7d0b-ad2f-f0aa2d86350a" xlink:to="loc_ifrs-full_DividendsPaidOrdinarySharesPerShare_019c99e0-d977-76d3-944d-49b50eeaa064" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_eqx_ShareRepurchaseProgramApprovedRepurchasePercentageOfOutstandingShares_019c99e0-d977-7338-99ee-05bf3a254bf0" xlink:href="eqx-20251231.xsd#eqx_ShareRepurchaseProgramApprovedRepurchasePercentageOfOutstandingShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_019c99e0-d976-7d0b-ad2f-f0aa2d86350a" xlink:to="loc_eqx_ShareRepurchaseProgramApprovedRepurchasePercentageOfOutstandingShares_019c99e0-d977-7338-99ee-05bf3a254bf0" xlink:type="arc" order="1"/>
  </link:definitionLink>
</link:linkbase>
