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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a130e6-8bad-79a5-9e64-2f758ba9521a,g:dc9cf1ce-b69e-4644-85fb-ab1a8f88327a-->
<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://www.gopro.com/role/Cover" xlink:type="simple" xlink:href="gpro-20260630.xsd#Cover"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_01a130e6-8d00-799c-bc87-d77e4c68cd01" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_01a130e6-8d00-799c-bc87-d77e4c68cd01" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8d00-7f69-830b-1da9fce2495d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a130e6-8d00-799c-bc87-d77e4c68cd01" xlink:to="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8d00-7f69-830b-1da9fce2495d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-7f69-830b-1da9fce2495d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8d00-7f69-830b-1da9fce2495d" xlink:to="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-7f69-830b-1da9fce2495d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-7a99-a3fa-c938bd426bf3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8d00-7f69-830b-1da9fce2495d" xlink:to="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-7a99-a3fa-c938bd426bf3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_01a130e6-8d00-73f9-9db3-4da39b52ec01" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-7a99-a3fa-c938bd426bf3" xlink:to="loc_us-gaap_CommonClassAMember_01a130e6-8d00-73f9-9db3-4da39b52ec01" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassBMember_01a130e6-8d00-7ce0-8e78-f6658012fd79" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-7a99-a3fa-c938bd426bf3" xlink:to="loc_us-gaap_CommonClassBMember_01a130e6-8d00-7ce0-8e78-f6658012fd79" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_01a130e6-8d00-7ba8-ac72-6c2853eb810a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_EntityIncorporationStateCountryCode_01a130e6-8d00-7ba8-ac72-6c2853eb810a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_01a130e6-8d00-7f3b-8230-cfbfb3fb29d5" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_EntityTaxIdentificationNumber_01a130e6-8d00-7f3b-8230-cfbfb3fb29d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_01a130e6-8d00-7a72-ab30-8148769569b0" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_EntityAddressAddressLine1_01a130e6-8d00-7a72-ab30-8148769569b0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_01a130e6-8d00-7c4c-bc94-562b8723e186" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_EntityAddressCityOrTown_01a130e6-8d00-7c4c-bc94-562b8723e186" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_01a130e6-8d00-7c97-9737-83988a940597" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_EntityAddressStateOrProvince_01a130e6-8d00-7c97-9737-83988a940597" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_01a130e6-8d00-7237-88f9-f1e76793cced" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_EntityAddressPostalZipCode_01a130e6-8d00-7237-88f9-f1e76793cced" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_01a130e6-8d00-718a-9c5a-e5ad49cb9a10" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_Security12bTitle_01a130e6-8d00-718a-9c5a-e5ad49cb9a10" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_01a130e6-8d00-7154-a715-0758ca37805b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_TradingSymbol_01a130e6-8d00-7154-a715-0758ca37805b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_01a130e6-8d00-7020-8627-478b9cf880bd" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_EntityRegistrantName_01a130e6-8d00-7020-8627-478b9cf880bd" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_01a130e6-8d00-7b43-b23d-c6e4a6336b93" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_CityAreaCode_01a130e6-8d00-7b43-b23d-c6e4a6336b93" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_01a130e6-8d00-7b2e-b658-0625080863b2" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_LocalPhoneNumber_01a130e6-8d00-7b2e-b658-0625080863b2" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_01a130e6-8d00-7f0c-8dab-94ac7c18524e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_EntityCentralIndexKey_01a130e6-8d00-7f0c-8dab-94ac7c18524e" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory_01a130e6-8d00-7651-b6ea-eb3b860e9a2b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFilerCategory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_EntityFilerCategory_01a130e6-8d00-7651-b6ea-eb3b860e9a2b" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_01a130e6-8d00-71d3-8d78-80c51cd7b55a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_DocumentType_01a130e6-8d00-71d3-8d78-80c51cd7b55a" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_01a130e6-8d00-7c90-be44-44605e8e1c23" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_DocumentPeriodEndDate_01a130e6-8d00-7c90-be44-44605e8e1c23" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport_01a130e6-8d00-721f-b40d-716c828c1fad" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentTransitionReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_DocumentTransitionReport_01a130e6-8d00-721f-b40d-716c828c1fad" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_01a130e6-8d00-713d-a84a-3200c4cbe984" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_EntityFileNumber_01a130e6-8d00-713d-a84a-3200c4cbe984" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus_01a130e6-8d00-780f-849d-84f4576ca132" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentFiscalYearFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_DocumentFiscalYearFocus_01a130e6-8d00-780f-849d-84f4576ca132" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus_01a130e6-8d00-77ae-8f1e-989399c42381" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentFiscalPeriodFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_DocumentFiscalPeriodFocus_01a130e6-8d00-77ae-8f1e-989399c42381" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_01a130e6-8d00-7b0f-a4b6-d58e42779d7f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_AmendmentFlag_01a130e6-8d00-7b0f-a4b6-d58e42779d7f" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_01a130e6-8d00-7f09-8b57-eca3e3634cf3" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_01a130e6-8d00-7f09-8b57-eca3e3634cf3" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_01a130e6-8d00-736f-80f3-7ac3bd65f656" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_EntityEmergingGrowthCompany_01a130e6-8d00-736f-80f3-7ac3bd65f656" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus_01a130e6-8d00-77ee-903b-0248e882d1c5" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCurrentReportingStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_EntityCurrentReportingStatus_01a130e6-8d00-77ee-903b-0248e882d1c5" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent_01a130e6-8d00-7a35-95c3-37f5297752a3" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityInteractiveDataCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_EntityInteractiveDataCurrent_01a130e6-8d00-7a35-95c3-37f5297752a3" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany_01a130e6-8d00-7950-b31c-6a05c16dfa47" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityShellCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_EntityShellCompany_01a130e6-8d00-7950-b31c-6a05c16dfa47" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_01a130e6-8d00-70ba-9280-2054fe80c580" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_SecurityExchangeName_01a130e6-8d00-70ba-9280-2054fe80c580" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness_01a130e6-8d00-77df-888b-bf6ec2593b58" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntitySmallBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_EntitySmallBusiness_01a130e6-8d00-77df-888b-bf6ec2593b58" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_01a130e6-8d00-713e-9e65-a3f2810fbce1" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8d00-73b3-a707-21a2320a52e1" xlink:to="loc_dei_CurrentFiscalYearEndDate_01a130e6-8d00-713e-9e65-a3f2810fbce1" xlink:type="arc" order="27"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/CondensedConsolidatedBalanceSheets" xlink:type="simple" xlink:href="gpro-20260630.xsd#CondensedConsolidatedBalanceSheets"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/CondensedConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a130e6-8d00-71f5-8e4a-090afc71569e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a130e6-8d00-764a-b341-ee19ad032b61" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-71f5-8e4a-090afc71569e" xlink:to="loc_us-gaap_StatementTable_01a130e6-8d00-764a-b341-ee19ad032b61" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8d00-7146-9853-7003181f23a7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a130e6-8d00-764a-b341-ee19ad032b61" xlink:to="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8d00-7146-9853-7003181f23a7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-7146-9853-7003181f23a7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8d00-7146-9853-7003181f23a7" xlink:to="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-7146-9853-7003181f23a7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-75ee-b7db-a0574aaac6af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8d00-7146-9853-7003181f23a7" xlink:to="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-75ee-b7db-a0574aaac6af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockMember_01a130e6-8d00-7049-bf47-484c7aa75a5a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-75ee-b7db-a0574aaac6af" xlink:to="loc_us-gaap_PreferredStockMember_01a130e6-8d00-7049-bf47-484c7aa75a5a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_01a130e6-8d00-790a-97d5-ccc918af6e6f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-75ee-b7db-a0574aaac6af" xlink:to="loc_us-gaap_CommonClassAMember_01a130e6-8d00-790a-97d5-ccc918af6e6f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassBMember_01a130e6-8d00-75c5-af16-1ec92e6df96e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-75ee-b7db-a0574aaac6af" xlink:to="loc_us-gaap_CommonClassBMember_01a130e6-8d00-75c5-af16-1ec92e6df96e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_01a130e6-8d00-7c7c-8dee-09fa4eb3da53" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-75ee-b7db-a0574aaac6af" xlink:to="loc_us-gaap_TreasuryStockCommonMember_01a130e6-8d00-7c7c-8dee-09fa4eb3da53" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_01a130e6-8d00-7887-8290-3c82a86fc91f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-71f5-8e4a-090afc71569e" xlink:to="loc_us-gaap_AssetsAbstract_01a130e6-8d00-7887-8290-3c82a86fc91f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrentAbstract_01a130e6-8d00-7367-842f-cff947e9ed92" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a130e6-8d00-7887-8290-3c82a86fc91f" xlink:to="loc_us-gaap_AssetsCurrentAbstract_01a130e6-8d00-7367-842f-cff947e9ed92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsAndShortTermInvestments_01a130e6-8d00-742b-8813-7c80099941c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsAndShortTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_01a130e6-8d00-7367-842f-cff947e9ed92" xlink:to="loc_us-gaap_CashCashEquivalentsAndShortTermInvestments_01a130e6-8d00-742b-8813-7c80099941c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_01a130e6-8d00-7c7b-9f55-c5f691d3dd7d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_01a130e6-8d00-7367-842f-cff947e9ed92" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_01a130e6-8d00-7c7b-9f55-c5f691d3dd7d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_01a130e6-8d00-7abe-bb95-d5b859b07feb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_01a130e6-8d00-7367-842f-cff947e9ed92" xlink:to="loc_us-gaap_InventoryNet_01a130e6-8d00-7abe-bb95-d5b859b07feb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a130e6-8d00-7837-a8fe-97e6f82c5bab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_01a130e6-8d00-7367-842f-cff947e9ed92" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a130e6-8d00-7837-a8fe-97e6f82c5bab" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_01a130e6-8d00-7bdc-ba01-d1354035a1c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_01a130e6-8d00-7367-842f-cff947e9ed92" xlink:to="loc_us-gaap_AssetsCurrent_01a130e6-8d00-7bdc-ba01-d1354035a1c8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_01a130e6-8d00-7ec0-ae8f-db4cd16689d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a130e6-8d00-7887-8290-3c82a86fc91f" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_01a130e6-8d00-7ec0-ae8f-db4cd16689d9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_01a130e6-8d00-7847-b518-a6e228faf49e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a130e6-8d00-7887-8290-3c82a86fc91f" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_01a130e6-8d00-7847-b518-a6e228faf49e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_01a130e6-8d00-74fc-963b-e825c5c72055" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a130e6-8d00-7887-8290-3c82a86fc91f" xlink:to="loc_us-gaap_Goodwill_01a130e6-8d00-74fc-963b-e825c5c72055" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_01a130e6-8d00-7f0d-8def-242e58d2d12e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a130e6-8d00-7887-8290-3c82a86fc91f" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_01a130e6-8d00-7f0d-8def-242e58d2d12e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_01a130e6-8d00-7096-a25c-b441ccf115fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_01a130e6-8d00-7887-8290-3c82a86fc91f" xlink:to="loc_us-gaap_Assets_01a130e6-8d00-7096-a25c-b441ccf115fa" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract_01a130e6-8d00-7321-a8e6-bf04a76312bf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-71f5-8e4a-090afc71569e" xlink:to="loc_us-gaap_LiabilitiesAbstract_01a130e6-8d00-7321-a8e6-bf04a76312bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_01a130e6-8d00-7a75-ac53-a447cde7c96d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_01a130e6-8d00-7321-a8e6-bf04a76312bf" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_01a130e6-8d00-7a75-ac53-a447cde7c96d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_01a130e6-8d00-7838-9115-31db2e13864b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_01a130e6-8d00-7a75-ac53-a447cde7c96d" xlink:to="loc_us-gaap_AccountsPayableCurrent_01a130e6-8d00-7838-9115-31db2e13864b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_01a130e6-8d00-7d1e-9bf8-1f1e5ea0d776" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_01a130e6-8d00-7a75-ac53-a447cde7c96d" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_01a130e6-8d00-7d1e-9bf8-1f1e5ea0d776" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_01a130e6-8d00-7948-a028-c25a51f8cd46" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_01a130e6-8d00-7a75-ac53-a447cde7c96d" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_01a130e6-8d00-7948-a028-c25a51f8cd46" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_01a130e6-8d00-7498-9713-6c9e2bfa88f0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_01a130e6-8d00-7a75-ac53-a447cde7c96d" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_01a130e6-8d00-7498-9713-6c9e2bfa88f0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermBorrowings_01a130e6-8d00-79e8-bec1-7e0fe71ddf30" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_01a130e6-8d00-7a75-ac53-a447cde7c96d" xlink:to="loc_us-gaap_ShortTermBorrowings_01a130e6-8d00-79e8-bec1-7e0fe71ddf30" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_01a130e6-8d00-7a2b-81e0-7e773e0f26ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_01a130e6-8d00-7a75-ac53-a447cde7c96d" xlink:to="loc_us-gaap_LiabilitiesCurrent_01a130e6-8d00-7a2b-81e0-7e773e0f26ca" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedIncomeTaxesNoncurrent_01a130e6-8d00-700e-b641-dcbee952f278" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedIncomeTaxesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_01a130e6-8d00-7321-a8e6-bf04a76312bf" xlink:to="loc_us-gaap_AccruedIncomeTaxesNoncurrent_01a130e6-8d00-700e-b641-dcbee952f278" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_01a130e6-8d00-76b6-b167-996764498bb1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_01a130e6-8d00-7321-a8e6-bf04a76312bf" xlink:to="loc_us-gaap_LongTermDebt_01a130e6-8d00-76b6-b167-996764498bb1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_01a130e6-8d00-7393-8bb7-a160f639daf8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_01a130e6-8d00-7321-a8e6-bf04a76312bf" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_01a130e6-8d00-7393-8bb7-a160f639daf8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_01a130e6-8d00-74eb-b8cd-905073669ccf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_01a130e6-8d00-7321-a8e6-bf04a76312bf" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_01a130e6-8d00-74eb-b8cd-905073669ccf" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_01a130e6-8d00-7de3-bf74-478ab49bb35d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_01a130e6-8d00-7321-a8e6-bf04a76312bf" xlink:to="loc_us-gaap_Liabilities_01a130e6-8d00-7de3-bf74-478ab49bb35d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_01a130e6-8d00-7307-ad1d-f822cda9414a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-71f5-8e4a-090afc71569e" xlink:to="loc_us-gaap_CommitmentsAndContingencies_01a130e6-8d00-7307-ad1d-f822cda9414a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityAbstract_01a130e6-8d00-74d5-b829-355a7283628d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-71f5-8e4a-090afc71569e" xlink:to="loc_us-gaap_StockholdersEquityAbstract_01a130e6-8d00-74d5-b829-355a7283628d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValueOutstanding_01a130e6-8d00-7954-bbf0-384739a2a413" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockValueOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_01a130e6-8d00-74d5-b829-355a7283628d" xlink:to="loc_us-gaap_PreferredStockValueOutstanding_01a130e6-8d00-7954-bbf0-384739a2a413" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStocksIncludingAdditionalPaidInCapital_01a130e6-8d00-7bde-aea8-67f8223b1a55" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStocksIncludingAdditionalPaidInCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_01a130e6-8d00-74d5-b829-355a7283628d" xlink:to="loc_us-gaap_CommonStocksIncludingAdditionalPaidInCapital_01a130e6-8d00-7bde-aea8-67f8223b1a55" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValue_01a130e6-8d00-7672-b497-af2ba288c268" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_01a130e6-8d00-74d5-b829-355a7283628d" xlink:to="loc_us-gaap_TreasuryStockValue_01a130e6-8d00-7672-b497-af2ba288c268" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01a130e6-8d00-74a5-b4d1-0e205182bcbd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_01a130e6-8d00-74d5-b829-355a7283628d" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01a130e6-8d00-74a5-b4d1-0e205182bcbd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a130e6-8d00-7180-ba7d-6296ebb9ec80" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_01a130e6-8d00-74d5-b829-355a7283628d" xlink:to="loc_us-gaap_StockholdersEquity_01a130e6-8d00-7180-ba7d-6296ebb9ec80" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a130e6-8d00-763d-a4a2-55b825779fa5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-71f5-8e4a-090afc71569e" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a130e6-8d00-763d-a4a2-55b825779fa5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_01a130e6-8d00-7681-a320-f149dad3f857" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-71f5-8e4a-090afc71569e" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_01a130e6-8d00-7681-a320-f149dad3f857" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_01a130e6-8d00-789d-87cb-58871fec5f85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-71f5-8e4a-090afc71569e" xlink:to="loc_us-gaap_CommonStockSharesIssued_01a130e6-8d00-789d-87cb-58871fec5f85" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_01a130e6-8d00-7b54-9082-22aa237cc458" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-71f5-8e4a-090afc71569e" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_01a130e6-8d00-7b54-9082-22aa237cc458" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_01a130e6-8d00-76b3-bb03-f9daefd108d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-71f5-8e4a-090afc71569e" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_01a130e6-8d00-76b3-bb03-f9daefd108d3" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_01a130e6-8d00-7213-80f7-57e5c61abb02" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-71f5-8e4a-090afc71569e" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_01a130e6-8d00-7213-80f7-57e5c61abb02" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesIssued_01a130e6-8d00-72d1-be87-53f6b3d27753" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-71f5-8e4a-090afc71569e" xlink:to="loc_us-gaap_PreferredStockSharesIssued_01a130e6-8d00-72d1-be87-53f6b3d27753" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_01a130e6-8d00-76ee-8975-d4299d695315" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-71f5-8e4a-090afc71569e" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_01a130e6-8d00-76ee-8975-d4299d695315" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_01a130e6-8d00-7701-8b99-77e18902e9c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-71f5-8e4a-090afc71569e" xlink:to="loc_us-gaap_TreasuryStockCommonShares_01a130e6-8d00-7701-8b99-77e18902e9c7" xlink:type="arc" order="12"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/CondensedConsolidatedBalanceSheetsParenthetical" xlink:type="simple" xlink:href="gpro-20260630.xsd#CondensedConsolidatedBalanceSheetsParenthetical"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/CondensedConsolidatedBalanceSheetsParenthetical" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a130e6-8d00-7ab9-a782-46e18dabc6b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a130e6-8d00-7f38-85ca-342a1622dd1e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7ab9-a782-46e18dabc6b3" xlink:to="loc_us-gaap_StatementTable_01a130e6-8d00-7f38-85ca-342a1622dd1e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8d00-72f7-9bbd-d8d0a1195861" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a130e6-8d00-7f38-85ca-342a1622dd1e" xlink:to="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8d00-72f7-9bbd-d8d0a1195861" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-72f7-9bbd-d8d0a1195861_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8d00-72f7-9bbd-d8d0a1195861" xlink:to="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-72f7-9bbd-d8d0a1195861_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-7c64-af4f-39daba291151" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8d00-72f7-9bbd-d8d0a1195861" xlink:to="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-7c64-af4f-39daba291151" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_01a130e6-8d00-73cd-8aa5-ce8e7db4959e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-7c64-af4f-39daba291151" xlink:to="loc_us-gaap_CommonClassAMember_01a130e6-8d00-73cd-8aa5-ce8e7db4959e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassBMember_01a130e6-8d00-72ac-9b12-85623362ec4b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a130e6-8d00-7c64-af4f-39daba291151" xlink:to="loc_us-gaap_CommonClassBMember_01a130e6-8d00-72ac-9b12-85623362ec4b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_01a130e6-8d00-7f70-97c6-c40661e8ed8a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7ab9-a782-46e18dabc6b3" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_01a130e6-8d00-7f70-97c6-c40661e8ed8a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_01a130e6-8d00-77a7-9020-688d541707d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7ab9-a782-46e18dabc6b3" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_01a130e6-8d00-77a7-9020-688d541707d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesIssued_01a130e6-8d00-71e4-93d5-39896e3f0126" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7ab9-a782-46e18dabc6b3" xlink:to="loc_us-gaap_PreferredStockSharesIssued_01a130e6-8d00-71e4-93d5-39896e3f0126" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_01a130e6-8d00-7ed1-8f5c-d2320180e066" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7ab9-a782-46e18dabc6b3" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_01a130e6-8d00-7ed1-8f5c-d2320180e066" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_01a130e6-8d00-71ce-ae7c-ad1ccaa35423" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7ab9-a782-46e18dabc6b3" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_01a130e6-8d00-71ce-ae7c-ad1ccaa35423" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_01a130e6-8d00-74cb-9a4f-ccb612617cf2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7ab9-a782-46e18dabc6b3" xlink:to="loc_us-gaap_CommonStockSharesIssued_01a130e6-8d00-74cb-9a4f-ccb612617cf2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_01a130e6-8d00-768a-9d70-6ab2a23d568c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7ab9-a782-46e18dabc6b3" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_01a130e6-8d00-768a-9d70-6ab2a23d568c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_01a130e6-8d00-7f1a-94de-01f0c45318fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7ab9-a782-46e18dabc6b3" xlink:to="loc_us-gaap_TreasuryStockCommonShares_01a130e6-8d00-7f1a-94de-01f0c45318fc" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/CondensedConsolidatedStatementsofOperations" xlink:type="simple" xlink:href="gpro-20260630.xsd#CondensedConsolidatedStatementsofOperations"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/CondensedConsolidatedStatementsofOperations" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a130e6-8d00-7855-bbdd-56e2848032cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a130e6-8d00-792e-8520-f835d7f6bc83" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7855-bbdd-56e2848032cf" xlink:to="loc_us-gaap_StatementTable_01a130e6-8d00-792e-8520-f835d7f6bc83" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_01a130e6-8d00-768b-9f82-2bd2618c5caf" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a130e6-8d00-792e-8520-f835d7f6bc83" xlink:to="loc_srt_ProductOrServiceAxis_01a130e6-8d00-768b-9f82-2bd2618c5caf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_01a130e6-8d00-768b-9f82-2bd2618c5caf_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_01a130e6-8d00-768b-9f82-2bd2618c5caf" xlink:to="loc_srt_ProductsAndServicesDomain_01a130e6-8d00-768b-9f82-2bd2618c5caf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_01a130e6-8d00-7a9e-abbf-6b4a3f668867" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_01a130e6-8d00-768b-9f82-2bd2618c5caf" xlink:to="loc_srt_ProductsAndServicesDomain_01a130e6-8d00-7a9e-abbf-6b4a3f668867" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_HardwareMember_01a130e6-8d00-77d4-912b-0dd5f8b3670f" xlink:href="gpro-20260630.xsd#gpro_HardwareMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_01a130e6-8d00-7a9e-abbf-6b4a3f668867" xlink:to="loc_gpro_HardwareMember_01a130e6-8d00-77d4-912b-0dd5f8b3670f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_SubscriptionAndServicesMember_01a130e6-8d00-7230-8a49-9f5f786b8766" xlink:href="gpro-20260630.xsd#gpro_SubscriptionAndServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_01a130e6-8d00-7a9e-abbf-6b4a3f668867" xlink:to="loc_gpro_SubscriptionAndServicesMember_01a130e6-8d00-7230-8a49-9f5f786b8766" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_01a130e6-8d00-7ceb-b075-92b6ed22ccb3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7855-bbdd-56e2848032cf" xlink:to="loc_us-gaap_Revenues_01a130e6-8d00-7ceb-b075-92b6ed22ccb3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_01a130e6-8d00-76f6-aa47-dfda46ba5cb4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7855-bbdd-56e2848032cf" xlink:to="loc_us-gaap_CostOfRevenue_01a130e6-8d00-76f6-aa47-dfda46ba5cb4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_01a130e6-8d00-704e-a3c2-d4dd0e0f0a6e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7855-bbdd-56e2848032cf" xlink:to="loc_us-gaap_GrossProfit_01a130e6-8d00-704e-a3c2-d4dd0e0f0a6e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpensesAbstract_01a130e6-8d00-7a20-b6ac-a1b6c9966f04" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7855-bbdd-56e2848032cf" xlink:to="loc_us-gaap_OperatingExpensesAbstract_01a130e6-8d00-7a20-b6ac-a1b6c9966f04" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_01a130e6-8d00-7a00-b0d0-d2c8d8df1edf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_01a130e6-8d00-7a20-b6ac-a1b6c9966f04" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_01a130e6-8d00-7a00-b0d0-d2c8d8df1edf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpense_01a130e6-8d00-703d-b206-a51a2d2b6910" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SellingAndMarketingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_01a130e6-8d00-7a20-b6ac-a1b6c9966f04" xlink:to="loc_us-gaap_SellingAndMarketingExpense_01a130e6-8d00-703d-b206-a51a2d2b6910" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_01a130e6-8d00-7274-84ea-11c9996e678c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_01a130e6-8d00-7a20-b6ac-a1b6c9966f04" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_01a130e6-8d00-7274-84ea-11c9996e678c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_01a130e6-8d00-74e0-9eef-4725aa7846e2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_01a130e6-8d00-7a20-b6ac-a1b6c9966f04" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_01a130e6-8d00-74e0-9eef-4725aa7846e2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_01a130e6-8d00-77e6-b080-e68b8fa523ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_01a130e6-8d00-7a20-b6ac-a1b6c9966f04" xlink:to="loc_us-gaap_OperatingExpenses_01a130e6-8d00-77e6-b080-e68b8fa523ae" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_01a130e6-8d00-789a-bab0-5f2ddab8126d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7855-bbdd-56e2848032cf" xlink:to="loc_us-gaap_OperatingIncomeLoss_01a130e6-8d00-789a-bab0-5f2ddab8126d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRevenueExpenseNet_01a130e6-8d00-7091-9090-0e8fd67c44d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRevenueExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7855-bbdd-56e2848032cf" xlink:to="loc_us-gaap_InterestRevenueExpenseNet_01a130e6-8d00-7091-9090-0e8fd67c44d1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_01a130e6-8d00-7a7a-a468-4eab3724320c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7855-bbdd-56e2848032cf" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_01a130e6-8d00-7a7a-a468-4eab3724320c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_01a130e6-8d00-708d-9c6d-04ad5b6ed8c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7855-bbdd-56e2848032cf" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_01a130e6-8d00-708d-9c6d-04ad5b6ed8c3" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a130e6-8d00-737a-8991-bc0e5c584ddd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7855-bbdd-56e2848032cf" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a130e6-8d00-737a-8991-bc0e5c584ddd" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_01a130e6-8d00-7946-a9c6-461110dad53c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7855-bbdd-56e2848032cf" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_01a130e6-8d00-7946-a9c6-461110dad53c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a130e6-8d00-77ee-a6b8-05ddefda612e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8d00-7855-bbdd-56e2848032cf" xlink:to="loc_us-gaap_NetIncomeLoss_01a130e6-8d00-77ee-a6b8-05ddefda612e" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/CondensedConsolidatedStatementsStockholdersEquityDeficit" xlink:type="simple" xlink:href="gpro-20260630.xsd#CondensedConsolidatedStatementsStockholdersEquityDeficit"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/CondensedConsolidatedStatementsStockholdersEquityDeficit" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a130e6-8da8-7457-9458-a987bf38e30b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a130e6-8da8-745f-b9cd-63e19bbf4ef8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8da8-7457-9458-a987bf38e30b" xlink:to="loc_us-gaap_StatementTable_01a130e6-8da8-745f-b9cd-63e19bbf4ef8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_01a130e6-8da8-7cda-8153-08a6ac4731f8" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a130e6-8da8-745f-b9cd-63e19bbf4ef8" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_01a130e6-8da8-7cda-8153-08a6ac4731f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_01a130e6-8da8-7cda-8153-08a6ac4731f8_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_01a130e6-8da8-7cda-8153-08a6ac4731f8" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_01a130e6-8da8-7cda-8153-08a6ac4731f8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_01a130e6-8da8-7d4a-86e9-2a1e8cdaf822" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_01a130e6-8da8-7cda-8153-08a6ac4731f8" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_01a130e6-8da8-7d4a-86e9-2a1e8cdaf822" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a130e6-8da8-7a0b-8502-a8ba95c235d0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a130e6-8da8-745f-b9cd-63e19bbf4ef8" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a130e6-8da8-7a0b-8502-a8ba95c235d0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a130e6-8da8-7a0b-8502-a8ba95c235d0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a130e6-8da8-7a0b-8502-a8ba95c235d0" xlink:to="loc_us-gaap_EquityComponentDomain_01a130e6-8da8-7a0b-8502-a8ba95c235d0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a130e6-8da8-7570-837f-69c05451e822" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a130e6-8da8-7a0b-8502-a8ba95c235d0" xlink:to="loc_us-gaap_EquityComponentDomain_01a130e6-8da8-7570-837f-69c05451e822" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_01a130e6-8da8-7b57-96a7-116746742b64" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a130e6-8da8-7570-837f-69c05451e822" xlink:to="loc_us-gaap_RetainedEarningsMember_01a130e6-8da8-7b57-96a7-116746742b64" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_01a130e6-8da8-789e-8052-358abd4aa055" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a130e6-8da8-7570-837f-69c05451e822" xlink:to="loc_us-gaap_TreasuryStockCommonMember_01a130e6-8da8-789e-8052-358abd4aa055" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember_01a130e6-8da8-79cb-b35b-ad14b03d1b97" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a130e6-8da8-7570-837f-69c05451e822" xlink:to="loc_us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember_01a130e6-8da8-79cb-b35b-ad14b03d1b97" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_01a130e6-8da8-7145-aaca-63bf4f9f8bbf" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MajorCustomersAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a130e6-8da8-745f-b9cd-63e19bbf4ef8" xlink:to="loc_srt_MajorCustomersAxis_01a130e6-8da8-7145-aaca-63bf4f9f8bbf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_01a130e6-8da8-7145-aaca-63bf4f9f8bbf_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MajorCustomersAxis_01a130e6-8da8-7145-aaca-63bf4f9f8bbf" xlink:to="loc_srt_NameOfMajorCustomerDomain_01a130e6-8da8-7145-aaca-63bf4f9f8bbf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_01a130e6-8da8-7da0-ba1b-c86eab79c437" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MajorCustomersAxis_01a130e6-8da8-7145-aaca-63bf4f9f8bbf" xlink:to="loc_srt_NameOfMajorCustomerDomain_01a130e6-8da8-7da0-ba1b-c86eab79c437" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_CustomerARetailerMember_01a130e6-8da8-77a7-af8a-740c68d3b1ca" xlink:href="gpro-20260630.xsd#gpro_CustomerARetailerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_01a130e6-8da8-7da0-ba1b-c86eab79c437" xlink:to="loc_gpro_CustomerARetailerMember_01a130e6-8da8-77a7-af8a-740c68d3b1ca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_01a130e6-8da8-71a0-9abd-a80015d9e868" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a130e6-8da8-745f-b9cd-63e19bbf4ef8" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_01a130e6-8da8-71a0-9abd-a80015d9e868" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a130e6-8da8-71a0-9abd-a80015d9e868_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_01a130e6-8da8-71a0-9abd-a80015d9e868" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a130e6-8da8-71a0-9abd-a80015d9e868_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a130e6-8da8-7ab8-97f2-0b502afbdac4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_01a130e6-8da8-71a0-9abd-a80015d9e868" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a130e6-8da8-7ab8-97f2-0b502afbdac4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesRevenueNetMember_01a130e6-8da8-76ec-8601-165f58a3cb12" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SalesRevenueNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a130e6-8da8-7ab8-97f2-0b502afbdac4" xlink:to="loc_us-gaap_SalesRevenueNetMember_01a130e6-8da8-76ec-8601-165f58a3cb12" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_01a130e6-8da8-7ea4-a1e5-8e9f08fc4da5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a130e6-8da8-745f-b9cd-63e19bbf4ef8" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_01a130e6-8da8-7ea4-a1e5-8e9f08fc4da5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_01a130e6-8da8-7ea4-a1e5-8e9f08fc4da5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_01a130e6-8da8-7ea4-a1e5-8e9f08fc4da5" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_01a130e6-8da8-7ea4-a1e5-8e9f08fc4da5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_01a130e6-8da8-7348-bcc0-d199cc3847d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_01a130e6-8da8-7ea4-a1e5-8e9f08fc4da5" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_01a130e6-8da8-7348-bcc0-d199cc3847d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerConcentrationRiskMember_01a130e6-8da8-7d8e-ad92-9b930d62dab1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CustomerConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_01a130e6-8da8-7348-bcc0-d199cc3847d9" xlink:to="loc_us-gaap_CustomerConcentrationRiskMember_01a130e6-8da8-7d8e-ad92-9b930d62dab1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a130e6-8da8-75eb-8fb8-9132b37b92e2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8da8-7457-9458-a987bf38e30b" xlink:to="loc_us-gaap_StockholdersEquity_01a130e6-8da8-75eb-8fb8-9132b37b92e2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a130e6-8da8-726f-93f8-57854ad4b194" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8da8-7457-9458-a987bf38e30b" xlink:to="loc_us-gaap_NetIncomeLoss_01a130e6-8da8-726f-93f8-57854ad4b194" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_01a130e6-8da8-78e8-9f1f-33b29577fbe7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8da8-7457-9458-a987bf38e30b" xlink:to="loc_us-gaap_SharesOutstanding_01a130e6-8da8-78e8-9f1f-33b29577fbe7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_01a130e6-8da8-738e-bcfd-fd7a02f03496" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8da8-7457-9458-a987bf38e30b" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_01a130e6-8da8-738e-bcfd-fd7a02f03496" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_01a130e6-8da8-7e12-9b17-3932597a5cc2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8da8-7457-9458-a987bf38e30b" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_01a130e6-8da8-7e12-9b17-3932597a5cc2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_01a130e6-8da8-789f-9ebb-cbc514be853e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8da8-7457-9458-a987bf38e30b" xlink:to="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_01a130e6-8da8-789f-9ebb-cbc514be853e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_01a130e6-8da8-7639-94ab-a87c2f7ab11c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8da8-7457-9458-a987bf38e30b" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_01a130e6-8da8-7639-94ab-a87c2f7ab11c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a130e6-8da8-725b-a237-ff6de8fa97d4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8da8-7457-9458-a987bf38e30b" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a130e6-8da8-725b-a237-ff6de8fa97d4" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_01a130e6-8da8-7dff-9beb-278eb4e6c4ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8da8-7457-9458-a987bf38e30b" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_01a130e6-8da8-7dff-9beb-278eb4e6c4ae" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_01a130e6-8da8-79b2-83e5-72f73e4d4c12" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a130e6-8da8-7457-9458-a987bf38e30b" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_01a130e6-8da8-79b2-83e5-72f73e4d4c12" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/ConcentrationsofriskandgeographicinformationTables" xlink:type="simple" xlink:href="gpro-20260630.xsd#ConcentrationsofriskandgeographicinformationTables"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/ConcentrationsofriskandgeographicinformationTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskLineItems_01a130e6-8da8-7813-9792-d6a777c1283d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTable_01a130e6-8da8-7564-8513-70c3828a95b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_01a130e6-8da8-7813-9792-d6a777c1283d" xlink:to="loc_us-gaap_ConcentrationRiskTable_01a130e6-8da8-7564-8513-70c3828a95b3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_01a130e6-8da8-7be3-bb07-b242b600c344" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_01a130e6-8da8-7564-8513-70c3828a95b3" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_01a130e6-8da8-7be3-bb07-b242b600c344" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a130e6-8da8-7be3-bb07-b242b600c344_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_01a130e6-8da8-7be3-bb07-b242b600c344" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a130e6-8da8-7be3-bb07-b242b600c344_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a130e6-8da8-78d9-894d-59c7e0e9afce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_01a130e6-8da8-7be3-bb07-b242b600c344" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a130e6-8da8-78d9-894d-59c7e0e9afce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableMember_01a130e6-8da8-7076-a723-3b1d102385e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a130e6-8da8-78d9-894d-59c7e0e9afce" xlink:to="loc_us-gaap_AccountsReceivableMember_01a130e6-8da8-7076-a723-3b1d102385e8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesRevenueNetMember_01a130e6-8da8-7c84-b991-bdee7bdf0f78" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SalesRevenueNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a130e6-8da8-78d9-894d-59c7e0e9afce" xlink:to="loc_us-gaap_SalesRevenueNetMember_01a130e6-8da8-7c84-b991-bdee7bdf0f78" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock_01a130e6-8da8-7a0c-adee-723dd28d748f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_01a130e6-8da8-7813-9792-d6a777c1283d" xlink:to="loc_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock_01a130e6-8da8-7a0c-adee-723dd28d748f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_01a130e6-8da8-7009-8649-79efd4df4e7c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_01a130e6-8da8-7813-9792-d6a777c1283d" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_01a130e6-8da8-7009-8649-79efd4df4e7c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock_01a130e6-8da8-7857-a276-b8191ee127f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_01a130e6-8da8-7813-9792-d6a777c1283d" xlink:to="loc_us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock_01a130e6-8da8-7857-a276-b8191ee127f6" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/SummaryofbusinessandsignificantaccountingpoliciesDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#SummaryofbusinessandsignificantaccountingpoliciesDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/SummaryofbusinessandsignificantaccountingpoliciesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a130e6-8da8-7fee-a7d9-5d8b460d3700" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a130e6-8da8-74ef-9dc9-769b8d6b1093" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a130e6-8da8-7fee-a7d9-5d8b460d3700" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a130e6-8da8-74ef-9dc9-769b8d6b1093" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_01a130e6-8da8-7c94-b64b-404689718d88" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a130e6-8da8-74ef-9dc9-769b8d6b1093" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_01a130e6-8da8-7c94-b64b-404689718d88" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-7c94-b64b-404689718d88_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a130e6-8da8-7c94-b64b-404689718d88" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-7c94-b64b-404689718d88_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-7193-a45c-1700798a59e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a130e6-8da8-7c94-b64b-404689718d88" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-7193-a45c-1700798a59e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ConvertibleSeniorNotesDue2025Member_01a130e6-8da8-7cce-a075-a68772d31439" xlink:href="gpro-20260630.xsd#gpro_ConvertibleSeniorNotesDue2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-7193-a45c-1700798a59e0" xlink:to="loc_gpro_ConvertibleSeniorNotesDue2025Member_01a130e6-8da8-7cce-a075-a68772d31439" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_01a130e6-8da8-76c8-a372-06ffc381a197" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a130e6-8da8-74ef-9dc9-769b8d6b1093" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_01a130e6-8da8-76c8-a372-06ffc381a197" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_01a130e6-8da8-76c8-a372-06ffc381a197_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_01a130e6-8da8-76c8-a372-06ffc381a197" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_01a130e6-8da8-76c8-a372-06ffc381a197_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_01a130e6-8da8-72fd-899e-75cab2685d99" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_01a130e6-8da8-76c8-a372-06ffc381a197" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_01a130e6-8da8-72fd-899e-75cab2685d99" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a130e6-8da8-7d79-ab0f-bccd2e385e35" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a130e6-8da8-74ef-9dc9-769b8d6b1093" xlink:to="loc_srt_RangeAxis_01a130e6-8da8-7d79-ab0f-bccd2e385e35" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a130e6-8da8-7d79-ab0f-bccd2e385e35_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a130e6-8da8-7d79-ab0f-bccd2e385e35" xlink:to="loc_srt_RangeMember_01a130e6-8da8-7d79-ab0f-bccd2e385e35_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a130e6-8da8-7891-b461-2d890c8c64a3" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a130e6-8da8-7d79-ab0f-bccd2e385e35" xlink:to="loc_srt_RangeMember_01a130e6-8da8-7891-b461-2d890c8c64a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a130e6-8da8-7627-8752-aa8f2f9bdbe9" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a130e6-8da8-7891-b461-2d890c8c64a3" xlink:to="loc_srt_MinimumMember_01a130e6-8da8-7627-8752-aa8f2f9bdbe9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a130e6-8da8-7f8d-a738-25d1ac433ec9" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a130e6-8da8-7891-b461-2d890c8c64a3" xlink:to="loc_srt_MaximumMember_01a130e6-8da8-7f8d-a738-25d1ac433ec9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_01a130e6-8da8-7f1c-8e60-1db36e4cf75b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a130e6-8da8-7fee-a7d9-5d8b460d3700" xlink:to="loc_us-gaap_ContractWithCustomerLiability_01a130e6-8da8-7f1c-8e60-1db36e4cf75b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_01a130e6-8da8-774b-9ab6-e4478f0fa5c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a130e6-8da8-7fee-a7d9-5d8b460d3700" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_01a130e6-8da8-774b-9ab6-e4478f0fa5c1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01a130e6-8da8-7fd9-9fdb-66f462f60822" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a130e6-8da8-7fee-a7d9-5d8b460d3700" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01a130e6-8da8-7fd9-9fdb-66f462f60822" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_01a130e6-8da8-7d11-b18b-ba0dd1a48ad5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a130e6-8da8-7fee-a7d9-5d8b460d3700" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_01a130e6-8da8-7d11-b18b-ba0dd1a48ad5" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/FairvaluemeasurementsDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#FairvaluemeasurementsDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/FairvaluemeasurementsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a130e6-8da8-7cd1-8e93-f0bcf34bff28" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a130e6-8da8-753f-beb4-457d893a2832" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a130e6-8da8-7cd1-8e93-f0bcf34bff28" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a130e6-8da8-753f-beb4-457d893a2832" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a130e6-8da8-73a1-9696-479a48d8b252" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a130e6-8da8-753f-beb4-457d893a2832" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a130e6-8da8-73a1-9696-479a48d8b252" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a130e6-8da8-73a1-9696-479a48d8b252_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a130e6-8da8-73a1-9696-479a48d8b252" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a130e6-8da8-73a1-9696-479a48d8b252_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a130e6-8da8-78e3-aaa7-5a473c306707" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a130e6-8da8-73a1-9696-479a48d8b252" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a130e6-8da8-78e3-aaa7-5a473c306707" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_01a130e6-8da8-71fd-9fc7-b2fc08f88d58" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a130e6-8da8-753f-beb4-457d893a2832" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_01a130e6-8da8-71fd-9fc7-b2fc08f88d58" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-71fd-9fc7-b2fc08f88d58_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a130e6-8da8-71fd-9fc7-b2fc08f88d58" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-71fd-9fc7-b2fc08f88d58_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-7baf-b648-17c974b4916b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a130e6-8da8-71fd-9fc7-b2fc08f88d58" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-7baf-b648-17c974b4916b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ConvertibleSeniorNotesDue2025Member_01a130e6-8da8-7b55-8ce0-fb1a164f0d00" xlink:href="gpro-20260630.xsd#gpro_ConvertibleSeniorNotesDue2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-7baf-b648-17c974b4916b" xlink:to="loc_gpro_ConvertibleSeniorNotesDue2025Member_01a130e6-8da8-7b55-8ce0-fb1a164f0d00" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_01a130e6-8da8-79f6-92a5-a6d7f571a6d0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a130e6-8da8-753f-beb4-457d893a2832" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_01a130e6-8da8-79f6-92a5-a6d7f571a6d0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_01a130e6-8da8-79f6-92a5-a6d7f571a6d0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_01a130e6-8da8-79f6-92a5-a6d7f571a6d0" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_01a130e6-8da8-79f6-92a5-a6d7f571a6d0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_01a130e6-8da8-76fa-983e-a687654b7936" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_01a130e6-8da8-79f6-92a5-a6d7f571a6d0" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_01a130e6-8da8-76fa-983e-a687654b7936" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_01a130e6-8da8-7edb-af2c-2f20f349a276" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_01a130e6-8da8-76fa-983e-a687654b7936" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_01a130e6-8da8-7edb-af2c-2f20f349a276" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a130e6-8da8-7635-8522-f01989d11db9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a130e6-8da8-753f-beb4-457d893a2832" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a130e6-8da8-7635-8522-f01989d11db9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a130e6-8da8-7635-8522-f01989d11db9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a130e6-8da8-7635-8522-f01989d11db9" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a130e6-8da8-7635-8522-f01989d11db9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a130e6-8da8-776c-9b16-78c79cd49e07" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a130e6-8da8-7635-8522-f01989d11db9" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a130e6-8da8-776c-9b16-78c79cd49e07" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_01a130e6-8da8-7730-9e69-10ca9aacd272" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a130e6-8da8-776c-9b16-78c79cd49e07" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_01a130e6-8da8-7730-9e69-10ca9aacd272" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_01a130e6-8da8-7e4e-a767-0c910b09e292" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a130e6-8da8-776c-9b16-78c79cd49e07" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_01a130e6-8da8-7e4e-a767-0c910b09e292" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_01a130e6-8da8-7876-ab7c-c8b84f96d0d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a130e6-8da8-776c-9b16-78c79cd49e07" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_01a130e6-8da8-7876-ab7c-c8b84f96d0d7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAxis_01a130e6-8da8-7ebf-b204-6b2e3d39b46e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a130e6-8da8-753f-beb4-457d893a2832" xlink:to="loc_us-gaap_CashAndCashEquivalentsAxis_01a130e6-8da8-7ebf-b204-6b2e3d39b46e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_01a130e6-8da8-7ebf-b204-6b2e3d39b46e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_01a130e6-8da8-7ebf-b204-6b2e3d39b46e" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_01a130e6-8da8-7ebf-b204-6b2e3d39b46e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_01a130e6-8da8-7064-ac30-1f0dab8acd6b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_01a130e6-8da8-7ebf-b204-6b2e3d39b46e" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_01a130e6-8da8-7064-ac30-1f0dab8acd6b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_01a130e6-8da8-70fc-8e5d-207f1147af5a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MoneyMarketFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_01a130e6-8da8-7064-ac30-1f0dab8acd6b" xlink:to="loc_us-gaap_MoneyMarketFundsMember_01a130e6-8da8-70fc-8e5d-207f1147af5a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a130e6-8da8-7fd7-b496-9bc36f689370" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a130e6-8da8-7fd7-b496-9bc36f689370_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a130e6-8da8-799b-a39b-419e77806b9c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_01a130e6-8da8-792d-a36f-52299033f45a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a130e6-8da8-753f-beb4-457d893a2832" xlink:to="loc_us-gaap_ShortTermDebtTypeAxis_01a130e6-8da8-792d-a36f-52299033f45a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_01a130e6-8da8-792d-a36f-52299033f45a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_01a130e6-8da8-792d-a36f-52299033f45a" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_01a130e6-8da8-792d-a36f-52299033f45a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_01a130e6-8da8-7505-9ce8-5a90e94375ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_01a130e6-8da8-792d-a36f-52299033f45a" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_01a130e6-8da8-7505-9ce8-5a90e94375ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ConvertibleSeniorNotesDue2025Member_01a130e6-8da8-7072-b84a-6072875fab28" xlink:href="gpro-20260630.xsd#gpro_ConvertibleSeniorNotesDue2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_01a130e6-8da8-7505-9ce8-5a90e94375ed" xlink:to="loc_gpro_ConvertibleSeniorNotesDue2025Member_01a130e6-8da8-7072-b84a-6072875fab28" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_01a130e6-8da8-73c0-93b7-9a55e84808fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a130e6-8da8-753f-beb4-457d893a2832" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_01a130e6-8da8-73c0-93b7-9a55e84808fc" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_01a130e6-8da8-73c0-93b7-9a55e84808fc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_01a130e6-8da8-73c0-93b7-9a55e84808fc" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_01a130e6-8da8-73c0-93b7-9a55e84808fc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_01a130e6-8da8-7e38-866e-7cdae042388f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_01a130e6-8da8-73c0-93b7-9a55e84808fc" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_01a130e6-8da8-7e38-866e-7cdae042388f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_01a130e6-8da8-7cc4-8b80-9170d7d9a664" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MoneyMarketFundsMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByLiabilityClassAxis_01a130e6-8da8-70fd-bff8-b555f604a088" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByLiabilityClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a130e6-8da8-753f-beb4-457d893a2832" xlink:to="loc_us-gaap_FairValueByLiabilityClassAxis_01a130e6-8da8-70fd-bff8-b555f604a088" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_01a130e6-8da8-70fd-bff8-b555f604a088_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_01a130e6-8da8-70fd-bff8-b555f604a088" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_01a130e6-8da8-70fd-bff8-b555f604a088_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_01a130e6-8da8-7b03-ae61-41ef4667e411" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_01a130e6-8da8-70fd-bff8-b555f604a088" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_01a130e6-8da8-7b03-ae61-41ef4667e411" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_01a130e6-8da8-78e7-a65a-6b29605aaa48" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WarrantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_01a130e6-8da8-7b03-ae61-41ef4667e411" xlink:to="loc_us-gaap_WarrantMember_01a130e6-8da8-78e7-a65a-6b29605aaa48" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember_01a130e6-8da8-73cd-a4cb-cb0741bede0f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_01a130e6-8da8-7b03-ae61-41ef4667e411" xlink:to="loc_us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember_01a130e6-8da8-73cd-a4cb-cb0741bede0f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_01a130e6-8da8-727e-baaa-ae116361dafe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a130e6-8da8-7cd1-8e93-f0bcf34bff28" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_01a130e6-8da8-727e-baaa-ae116361dafe" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_01a130e6-8da8-7daf-bf4e-b78ce871e53e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a130e6-8da8-7cd1-8e93-f0bcf34bff28" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_01a130e6-8da8-7daf-bf4e-b78ce871e53e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_01a130e6-8da8-785a-9463-325ef29c88f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a130e6-8da8-7cd1-8e93-f0bcf34bff28" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_01a130e6-8da8-785a-9463-325ef29c88f6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_01a130e6-8da8-7efd-822c-1af580553638" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_01a130e6-8da8-77b1-88c3-8b6617df4380" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_01a130e6-8da8-7efd-822c-1af580553638" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_01a130e6-8da8-77b1-88c3-8b6617df4380" xlink:type="arc" order="2" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByLiabilityClassAxis_01a130e6-8da8-7283-babf-7f73f7e017d8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByLiabilityClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_01a130e6-8da8-77b1-88c3-8b6617df4380" xlink:to="loc_us-gaap_FairValueByLiabilityClassAxis_01a130e6-8da8-7283-babf-7f73f7e017d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_01a130e6-8da8-7283-babf-7f73f7e017d8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_01a130e6-8da8-7260-9c1f-c2caf5d779e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_01a130e6-8da8-7fab-ae83-f825b9eedd30" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WarrantMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember_01a130e6-8da8-7714-8f82-f421de4cdcf0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_01a130e6-8da8-703b-bdf9-8883d70351ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_01a130e6-8da8-7efd-822c-1af580553638" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_01a130e6-8da8-703b-bdf9-8883d70351ca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityMarkToMarketAdjustment_01a130e6-8da8-7875-8006-d3f9ca29472d" xlink:href="gpro-20260630.xsd#gpro_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityMarkToMarketAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_01a130e6-8da8-7efd-822c-1af580553638" xlink:to="loc_gpro_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityMarkToMarketAdjustment_01a130e6-8da8-7875-8006-d3f9ca29472d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_01a130e6-8da8-74d3-af92-f5f83f050873" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_01a130e6-8da8-7efd-822c-1af580553638" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_01a130e6-8da8-74d3-af92-f5f83f050873" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityConversionOrSettlement_01a130e6-8da8-7fde-adc0-072a1b10d21e" xlink:href="gpro-20260630.xsd#gpro_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityConversionOrSettlement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_01a130e6-8da8-7efd-822c-1af580553638" xlink:to="loc_gpro_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityConversionOrSettlement_01a130e6-8da8-7fde-adc0-072a1b10d21e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_01a130e6-8da8-7e7f-a0f0-c0147e1e74fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_01a130e6-8da8-7a27-97fc-b4152c081d8e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_01a130e6-8da8-7e7f-a0f0-c0147e1e74fe" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_01a130e6-8da8-7a27-97fc-b4152c081d8e" xlink:type="arc" order="3" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeAxis_01a130e6-8da8-73b9-ad94-9ec895602428" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_01a130e6-8da8-7a27-97fc-b4152c081d8e" xlink:to="loc_us-gaap_MeasurementInputTypeAxis_01a130e6-8da8-73b9-ad94-9ec895602428" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_01a130e6-8da8-73b9-ad94-9ec895602428_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_01a130e6-8da8-73b9-ad94-9ec895602428" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_01a130e6-8da8-73b9-ad94-9ec895602428_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_01a130e6-8da8-7578-813b-88a4f55929a3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_01a130e6-8da8-73b9-ad94-9ec895602428" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_01a130e6-8da8-7578-813b-88a4f55929a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputPriceVolatilityMember_01a130e6-8da8-7269-ad9d-e2b83df47b47" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputPriceVolatilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_01a130e6-8da8-7578-813b-88a4f55929a3" xlink:to="loc_us-gaap_MeasurementInputPriceVolatilityMember_01a130e6-8da8-7269-ad9d-e2b83df47b47" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputRiskFreeInterestRateMember_01a130e6-8da8-772e-8dc6-12158b3fe813" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputRiskFreeInterestRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_01a130e6-8da8-7578-813b-88a4f55929a3" xlink:to="loc_us-gaap_MeasurementInputRiskFreeInterestRateMember_01a130e6-8da8-772e-8dc6-12158b3fe813" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputExpectedDividendRateMember_01a130e6-8da8-76b7-90cf-9d786fedca7a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputExpectedDividendRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_01a130e6-8da8-7578-813b-88a4f55929a3" xlink:to="loc_us-gaap_MeasurementInputExpectedDividendRateMember_01a130e6-8da8-76b7-90cf-9d786fedca7a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputExpectedTermMember_01a130e6-8da8-7fb2-a67a-561158730cba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputExpectedTermMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_01a130e6-8da8-7578-813b-88a4f55929a3" xlink:to="loc_us-gaap_MeasurementInputExpectedTermMember_01a130e6-8da8-7fb2-a67a-561158730cba" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputConversionPriceMember_01a130e6-8da8-7077-8bdf-deb8998880b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputConversionPriceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_01a130e6-8da8-7578-813b-88a4f55929a3" xlink:to="loc_us-gaap_MeasurementInputConversionPriceMember_01a130e6-8da8-7077-8bdf-deb8998880b2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantsAndRightsOutstandingMeasurementInput_01a130e6-8da8-7512-a9fa-863c5aeae0b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WarrantsAndRightsOutstandingMeasurementInput"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_01a130e6-8da8-7e7f-a0f0-c0147e1e74fe" xlink:to="loc_us-gaap_WarrantsAndRightsOutstandingMeasurementInput_01a130e6-8da8-7512-a9fa-863c5aeae0b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityMeasurementInput_01a130e6-8da8-731a-89c6-6ddfea5809b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilityMeasurementInput"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_01a130e6-8da8-7e7f-a0f0-c0147e1e74fe" xlink:to="loc_us-gaap_DerivativeLiabilityMeasurementInput_01a130e6-8da8-731a-89c6-6ddfea5809b4" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/CondensedconsolidatedfinancialstatementdetailsCashCashEquivalentsandMarketableSecuritiesDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#CondensedconsolidatedfinancialstatementdetailsCashCashEquivalentsandMarketableSecuritiesDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/CondensedconsolidatedfinancialstatementdetailsCashCashEquivalentsandMarketableSecuritiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsLineItems_01a130e6-8da8-7bc9-ab5f-63562e0c7b1b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_01a130e6-8da8-7b27-922c-6fa0946b71ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfCashAndCashEquivalentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a130e6-8da8-7bc9-ab5f-63562e0c7b1b" xlink:to="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_01a130e6-8da8-7b27-922c-6fa0946b71ed" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_01a130e6-8da8-7535-9384-10803f07ca1e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_01a130e6-8da8-7b27-922c-6fa0946b71ed" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_01a130e6-8da8-7535-9384-10803f07ca1e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_01a130e6-8da8-7535-9384-10803f07ca1e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_01a130e6-8da8-7535-9384-10803f07ca1e" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_01a130e6-8da8-7535-9384-10803f07ca1e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_01a130e6-8da8-75a2-8d4e-69b4e41aa19a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_01a130e6-8da8-7535-9384-10803f07ca1e" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_01a130e6-8da8-75a2-8d4e-69b4e41aa19a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_01a130e6-8da8-7f7f-8a93-54a01897db46" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_01a130e6-8da8-75a2-8d4e-69b4e41aa19a" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_01a130e6-8da8-7f7f-8a93-54a01897db46" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Cash_01a130e6-8da8-7de0-a290-c73651a2d86d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Cash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a130e6-8da8-7bc9-ab5f-63562e0c7b1b" xlink:to="loc_us-gaap_Cash_01a130e6-8da8-7de0-a290-c73651a2d86d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a130e6-8da8-7c82-9205-e877b15edef7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_01a130e6-8da8-7bc9-ab5f-63562e0c7b1b" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a130e6-8da8-7c82-9205-e877b15edef7" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/CondensedconsolidatedfinancialstatementdetailsPropertyandEquipmentNetDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#CondensedconsolidatedfinancialstatementdetailsPropertyandEquipmentNetDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/CondensedconsolidatedfinancialstatementdetailsPropertyandEquipmentNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a130e6-8da8-7af4-bf01-79b717c6ba3d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a130e6-8da8-75bc-8da8-ae1487c37a9d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a130e6-8da8-7af4-bf01-79b717c6ba3d" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a130e6-8da8-75bc-8da8-ae1487c37a9d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a130e6-8da8-7a96-bb3e-8eb24d2a98e4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a130e6-8da8-75bc-8da8-ae1487c37a9d" xlink:to="loc_srt_RangeAxis_01a130e6-8da8-7a96-bb3e-8eb24d2a98e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a130e6-8da8-7a96-bb3e-8eb24d2a98e4_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a130e6-8da8-7a96-bb3e-8eb24d2a98e4" xlink:to="loc_srt_RangeMember_01a130e6-8da8-7a96-bb3e-8eb24d2a98e4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a130e6-8da8-7df8-8a19-71f1320d52c4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a130e6-8da8-7a96-bb3e-8eb24d2a98e4" xlink:to="loc_srt_RangeMember_01a130e6-8da8-7df8-8a19-71f1320d52c4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a130e6-8da8-7a52-b3d5-8617b94a38a6" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a130e6-8da8-7df8-8a19-71f1320d52c4" xlink:to="loc_srt_MinimumMember_01a130e6-8da8-7a52-b3d5-8617b94a38a6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a130e6-8da8-746f-a5c1-67ade5cd0e95" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a130e6-8da8-7df8-8a19-71f1320d52c4" xlink:to="loc_srt_MaximumMember_01a130e6-8da8-746f-a5c1-67ade5cd0e95" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a130e6-8da8-79a6-ad07-22f521433039" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a130e6-8da8-75bc-8da8-ae1487c37a9d" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a130e6-8da8-79a6-ad07-22f521433039" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a130e6-8da8-79a6-ad07-22f521433039_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a130e6-8da8-79a6-ad07-22f521433039" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a130e6-8da8-79a6-ad07-22f521433039_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a130e6-8da8-74f4-a905-4d6ebe82b76b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a130e6-8da8-79a6-ad07-22f521433039" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a130e6-8da8-74f4-a905-4d6ebe82b76b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_01a130e6-8da8-7e2e-a199-6b9aa7f14e9b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LeaseholdImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a130e6-8da8-74f4-a905-4d6ebe82b76b" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_01a130e6-8da8-7e2e-a199-6b9aa7f14e9b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquipmentMember_01a130e6-8da8-7e08-81ef-5d1f2aeac28a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a130e6-8da8-74f4-a905-4d6ebe82b76b" xlink:to="loc_us-gaap_EquipmentMember_01a130e6-8da8-7e08-81ef-5d1f2aeac28a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ToolsDiesAndMoldsMember_01a130e6-8da8-7b64-aa60-25afd27e05e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ToolsDiesAndMoldsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a130e6-8da8-74f4-a905-4d6ebe82b76b" xlink:to="loc_us-gaap_ToolsDiesAndMoldsMember_01a130e6-8da8-7b64-aa60-25afd27e05e0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerEquipmentMember_01a130e6-8da8-7714-9050-6dfecc1f5ed6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComputerEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a130e6-8da8-74f4-a905-4d6ebe82b76b" xlink:to="loc_us-gaap_ComputerEquipmentMember_01a130e6-8da8-7714-9050-6dfecc1f5ed6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FurnitureAndFixturesMember_01a130e6-8da8-7268-82e4-4d2db8ace327" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FurnitureAndFixturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a130e6-8da8-74f4-a905-4d6ebe82b76b" xlink:to="loc_us-gaap_FurnitureAndFixturesMember_01a130e6-8da8-7268-82e4-4d2db8ace327" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_TradeshowEquipmentMember_01a130e6-8da8-72e4-bc93-070ba445e2ff" xlink:href="gpro-20260630.xsd#gpro_TradeshowEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a130e6-8da8-74f4-a905-4d6ebe82b76b" xlink:to="loc_gpro_TradeshowEquipmentMember_01a130e6-8da8-72e4-bc93-070ba445e2ff" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionInProgressMember_01a130e6-8da8-76c9-b34b-ed01d6f50da8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConstructionInProgressMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a130e6-8da8-74f4-a905-4d6ebe82b76b" xlink:to="loc_us-gaap_ConstructionInProgressMember_01a130e6-8da8-76c9-b34b-ed01d6f50da8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_01a130e6-8da8-7c89-b092-b66d10768a23" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a130e6-8da8-7af4-bf01-79b717c6ba3d" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_01a130e6-8da8-7c89-b092-b66d10768a23" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_01a130e6-8da8-7c17-bb0d-ee09bc662a31" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a130e6-8da8-7af4-bf01-79b717c6ba3d" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_01a130e6-8da8-7c17-bb0d-ee09bc662a31" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_01a130e6-8da8-7b27-bb0b-0651b90affbc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a130e6-8da8-7af4-bf01-79b717c6ba3d" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_01a130e6-8da8-7b27-bb0b-0651b90affbc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_01a130e6-8da8-7a2a-9758-cf5f8eeece0c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a130e6-8da8-7af4-bf01-79b717c6ba3d" xlink:to="loc_us-gaap_Depreciation_01a130e6-8da8-7a2a-9758-cf5f8eeece0c" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/CondensedconsolidatedfinancialstatementdetailsFutureAmortizationDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#CondensedconsolidatedfinancialstatementdetailsFutureAmortizationDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/CondensedconsolidatedfinancialstatementdetailsFutureAmortizationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a130e6-8da8-7400-9f01-a8094b6d20ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_01a130e6-8da8-71c6-a250-e7a0e699f403" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a130e6-8da8-7400-9f01-a8094b6d20ad" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_01a130e6-8da8-71c6-a250-e7a0e699f403" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a130e6-8da8-70bf-beb8-2ab53a15c1b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_01a130e6-8da8-71c6-a250-e7a0e699f403" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a130e6-8da8-70bf-beb8-2ab53a15c1b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a130e6-8da8-70bf-beb8-2ab53a15c1b5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a130e6-8da8-70bf-beb8-2ab53a15c1b5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a130e6-8da8-70bf-beb8-2ab53a15c1b5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a130e6-8da8-7999-8e2c-90187ee9a97f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a130e6-8da8-70bf-beb8-2ab53a15c1b5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a130e6-8da8-7999-8e2c-90187ee9a97f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_IntangiblesTotalMember_01a130e6-8da8-789b-b6cf-bc86902ed3a6" xlink:href="gpro-20260630.xsd#gpro_IntangiblesTotalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a130e6-8da8-7999-8e2c-90187ee9a97f" xlink:to="loc_gpro_IntangiblesTotalMember_01a130e6-8da8-789b-b6cf-bc86902ed3a6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextRollingTwelveMonths_01a130e6-8da8-7f31-91b1-9e44a9ed644a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextRollingTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a130e6-8da8-7400-9f01-a8094b6d20ad" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextRollingTwelveMonths_01a130e6-8da8-7f31-91b1-9e44a9ed644a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_01a130e6-8da8-7419-a4e3-847093bdb406" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a130e6-8da8-7400-9f01-a8094b6d20ad" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_01a130e6-8da8-7419-a4e3-847093bdb406" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_01a130e6-8da8-7db4-9a90-55aad52903dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a130e6-8da8-7400-9f01-a8094b6d20ad" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_01a130e6-8da8-7db4-9a90-55aad52903dd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_01a130e6-8da8-7129-bacc-984e561127a8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a130e6-8da8-7400-9f01-a8094b6d20ad" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_01a130e6-8da8-7129-bacc-984e561127a8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_01a130e6-8da8-77b2-92a4-6593d0b0374f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a130e6-8da8-7400-9f01-a8094b6d20ad" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_01a130e6-8da8-77b2-92a4-6593d0b0374f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a130e6-8da8-7251-a6cc-b9e1586a046b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a130e6-8da8-7400-9f01-a8094b6d20ad" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a130e6-8da8-7251-a6cc-b9e1586a046b" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/FinancingArrangementsDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#FinancingArrangementsDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/FinancingArrangementsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_01a130e6-8da8-7a5c-a3f0-6c32b27ed30d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_01a130e6-8da8-7a5c-a3f0-6c32b27ed30d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_01a130e6-8da8-781c-8912-5cae1a5ec925" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_01a130e6-8da8-7a5c-a3f0-6c32b27ed30d" xlink:to="loc_us-gaap_VariableRateAxis_01a130e6-8da8-781c-8912-5cae1a5ec925" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_01a130e6-8da8-781c-8912-5cae1a5ec925_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_01a130e6-8da8-781c-8912-5cae1a5ec925" xlink:to="loc_us-gaap_VariableRateDomain_01a130e6-8da8-781c-8912-5cae1a5ec925_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_01a130e6-8da8-7284-92e2-baf99996a52d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_01a130e6-8da8-781c-8912-5cae1a5ec925" xlink:to="loc_us-gaap_VariableRateDomain_01a130e6-8da8-7284-92e2-baf99996a52d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BaseRateMember_01a130e6-8da8-78c0-9a72-d694c9edc0ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BaseRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_01a130e6-8da8-7284-92e2-baf99996a52d" xlink:to="loc_us-gaap_BaseRateMember_01a130e6-8da8-78c0-9a72-d694c9edc0ec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_01a130e6-8da8-794a-8295-552b53eb3eb1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_01a130e6-8da8-7284-92e2-baf99996a52d" xlink:to="loc_us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_01a130e6-8da8-794a-8295-552b53eb3eb1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredOvernightFinancingRateSofrMember_01a130e6-8da8-7f32-b4a9-c38240ae8e64" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredOvernightFinancingRateSofrMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_01a130e6-8da8-7284-92e2-baf99996a52d" xlink:to="loc_us-gaap_SecuredOvernightFinancingRateSofrMember_01a130e6-8da8-7f32-b4a9-c38240ae8e64" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a130e6-8da8-7d4f-8108-37b951786959" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_01a130e6-8da8-7a5c-a3f0-6c32b27ed30d" xlink:to="loc_srt_RangeAxis_01a130e6-8da8-7d4f-8108-37b951786959" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a130e6-8da8-7d4f-8108-37b951786959_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a130e6-8da8-7d4f-8108-37b951786959" xlink:to="loc_srt_RangeMember_01a130e6-8da8-7d4f-8108-37b951786959_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a130e6-8da8-71e0-ad32-e8323d2e33d9" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a130e6-8da8-7d4f-8108-37b951786959" xlink:to="loc_srt_RangeMember_01a130e6-8da8-71e0-ad32-e8323d2e33d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a130e6-8da8-7462-a605-24240190e8fc" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a130e6-8da8-71e0-ad32-e8323d2e33d9" xlink:to="loc_srt_MinimumMember_01a130e6-8da8-7462-a605-24240190e8fc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a130e6-8da8-7473-9289-63cc88227120" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a130e6-8da8-71e0-ad32-e8323d2e33d9" xlink:to="loc_srt_MaximumMember_01a130e6-8da8-7473-9289-63cc88227120" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MedianMember_01a130e6-8da8-7bdb-851f-4f3406f7dbd9" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MedianMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a130e6-8da8-71e0-ad32-e8323d2e33d9" xlink:to="loc_srt_MedianMember_01a130e6-8da8-7bdb-851f-4f3406f7dbd9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_01a130e6-8da8-716d-9929-ebbf9c76aaf1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_01a130e6-8da8-7a5c-a3f0-6c32b27ed30d" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_01a130e6-8da8-716d-9929-ebbf9c76aaf1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-716d-9929-ebbf9c76aaf1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a130e6-8da8-716d-9929-ebbf9c76aaf1" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-716d-9929-ebbf9c76aaf1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-75c6-bf7a-7669e46dcaca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a130e6-8da8-716d-9929-ebbf9c76aaf1" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-75c6-bf7a-7669e46dcaca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ConvertibleSeniorNotesDue2025Member_01a130e6-8da8-748e-81e5-740fb8484e96" xlink:href="gpro-20260630.xsd#gpro_ConvertibleSeniorNotesDue2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-75c6-bf7a-7669e46dcaca" xlink:to="loc_gpro_ConvertibleSeniorNotesDue2025Member_01a130e6-8da8-748e-81e5-740fb8484e96" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_01a130e6-8da8-7d2f-94ef-aeb9821f9981" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_01a130e6-8da8-7a5c-a3f0-6c32b27ed30d" xlink:to="loc_us-gaap_CreditFacilityAxis_01a130e6-8da8-7d2f-94ef-aeb9821f9981" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a130e6-8da8-7d2f-94ef-aeb9821f9981_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_01a130e6-8da8-7d2f-94ef-aeb9821f9981" xlink:to="loc_us-gaap_CreditFacilityDomain_01a130e6-8da8-7d2f-94ef-aeb9821f9981_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a130e6-8da8-732b-b845-2457ee771beb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_01a130e6-8da8-7d2f-94ef-aeb9821f9981" xlink:to="loc_us-gaap_CreditFacilityDomain_01a130e6-8da8-732b-b845-2457ee771beb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2021CreditFacilityMember_01a130e6-8da8-76ca-bdb4-58c77178fd00" xlink:href="gpro-20260630.xsd#gpro_A2021CreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a130e6-8da8-732b-b845-2457ee771beb" xlink:to="loc_gpro_A2021CreditFacilityMember_01a130e6-8da8-76ca-bdb4-58c77178fd00" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2025TermLoanMember_01a130e6-8da8-7aac-881c-d6d0293fdbab" xlink:href="gpro-20260630.xsd#gpro_A2025TermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a130e6-8da8-732b-b845-2457ee771beb" xlink:to="loc_gpro_A2025TermLoanMember_01a130e6-8da8-7aac-881c-d6d0293fdbab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ConvertibleDebenturesMember_01a130e6-8da8-7039-88eb-3658700bc53c" xlink:href="gpro-20260630.xsd#gpro_ConvertibleDebenturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a130e6-8da8-732b-b845-2457ee771beb" xlink:to="loc_gpro_ConvertibleDebenturesMember_01a130e6-8da8-7039-88eb-3658700bc53c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_01a130e6-8da8-7bf1-8c4f-e52432a8623d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_01a130e6-8da8-7a5c-a3f0-6c32b27ed30d" xlink:to="loc_us-gaap_DebtInstrumentAxis_01a130e6-8da8-7bf1-8c4f-e52432a8623d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a130e6-8da8-7bf1-8c4f-e52432a8623d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a130e6-8da8-7bf1-8c4f-e52432a8623d" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a130e6-8da8-7bf1-8c4f-e52432a8623d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a130e6-8da8-7b9b-878f-acc54b27fca6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a130e6-8da8-7bf1-8c4f-e52432a8623d" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a130e6-8da8-7b9b-878f-acc54b27fca6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ConvertibleSeniorNotesDue2025Member_01a130e6-8da8-7255-bf19-21a384fabf51" xlink:href="gpro-20260630.xsd#gpro_ConvertibleSeniorNotesDue2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a130e6-8da8-7b9b-878f-acc54b27fca6" xlink:to="loc_gpro_ConvertibleSeniorNotesDue2025Member_01a130e6-8da8-7255-bf19-21a384fabf51" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2021CreditFacilityMember_01a130e6-8da8-7d3e-8204-1a9d34971a8b" xlink:href="gpro-20260630.xsd#gpro_A2021CreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a130e6-8da8-7b9b-878f-acc54b27fca6" xlink:to="loc_gpro_A2021CreditFacilityMember_01a130e6-8da8-7d3e-8204-1a9d34971a8b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ConvertibleDebenturesMember_01a130e6-8da8-7a8a-b73a-dce0de44d889" xlink:href="gpro-20260630.xsd#gpro_ConvertibleDebenturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a130e6-8da8-7b9b-878f-acc54b27fca6" xlink:to="loc_gpro_ConvertibleDebenturesMember_01a130e6-8da8-7a8a-b73a-dce0de44d889" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_01a130e6-8da8-77b8-a7b0-60fd962b1444" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_01a130e6-8da8-7a5c-a3f0-6c32b27ed30d" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_01a130e6-8da8-77b8-a7b0-60fd962b1444" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a130e6-8da8-77b8-a7b0-60fd962b1444_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_01a130e6-8da8-77b8-a7b0-60fd962b1444" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a130e6-8da8-77b8-a7b0-60fd962b1444_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a130e6-8da8-795f-9a98-cd5a6226854f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_01a130e6-8da8-77b8-a7b0-60fd962b1444" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_01a130e6-8da8-795f-9a98-cd5a6226854f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_01a130e6-8da8-752b-aa91-89dd2a8b199c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_01a130e6-8da8-7a5c-a3f0-6c32b27ed30d" xlink:to="loc_us-gaap_ShortTermDebtTypeAxis_01a130e6-8da8-752b-aa91-89dd2a8b199c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_01a130e6-8da8-752b-aa91-89dd2a8b199c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_01a130e6-8da8-752b-aa91-89dd2a8b199c" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_01a130e6-8da8-752b-aa91-89dd2a8b199c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_01a130e6-8da8-7fd4-8a2e-e4982a8d81e7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_01a130e6-8da8-752b-aa91-89dd2a8b199c" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_01a130e6-8da8-7fd4-8a2e-e4982a8d81e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ConvertibleSeniorNotesDue2025Member_01a130e6-8da8-71b5-b4fa-d524bdf5abc1" xlink:href="gpro-20260630.xsd#gpro_ConvertibleSeniorNotesDue2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_01a130e6-8da8-7fd4-8a2e-e4982a8d81e7" xlink:to="loc_gpro_ConvertibleSeniorNotesDue2025Member_01a130e6-8da8-71b5-b4fa-d524bdf5abc1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2021CreditFacilityPeriodAxis_01a130e6-8da8-7cd7-aa51-8f28e8b2ff95" xlink:href="gpro-20260630.xsd#gpro_A2021CreditFacilityPeriodAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_01a130e6-8da8-7a5c-a3f0-6c32b27ed30d" xlink:to="loc_gpro_A2021CreditFacilityPeriodAxis_01a130e6-8da8-7cd7-aa51-8f28e8b2ff95" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2021CreditFacilityPeriodDomain_01a130e6-8da8-7cd7-aa51-8f28e8b2ff95_default" xlink:href="gpro-20260630.xsd#gpro_A2021CreditFacilityPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gpro_A2021CreditFacilityPeriodAxis_01a130e6-8da8-7cd7-aa51-8f28e8b2ff95" xlink:to="loc_gpro_A2021CreditFacilityPeriodDomain_01a130e6-8da8-7cd7-aa51-8f28e8b2ff95_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2021CreditFacilityPeriodDomain_01a130e6-8da8-76cc-8e33-ee3f1616ce85" xlink:href="gpro-20260630.xsd#gpro_A2021CreditFacilityPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gpro_A2021CreditFacilityPeriodAxis_01a130e6-8da8-7cd7-aa51-8f28e8b2ff95" xlink:to="loc_gpro_A2021CreditFacilityPeriodDomain_01a130e6-8da8-76cc-8e33-ee3f1616ce85" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_August42025October302025Member_01a130e6-8da8-7b60-bf19-8ecf17f553b7" xlink:href="gpro-20260630.xsd#gpro_August42025October302025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2021CreditFacilityPeriodDomain_01a130e6-8da8-76cc-8e33-ee3f1616ce85" xlink:to="loc_gpro_August42025October302025Member_01a130e6-8da8-7b60-bf19-8ecf17f553b7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_October312025November142025Member_01a130e6-8da8-751b-877c-c4a636d07329" xlink:href="gpro-20260630.xsd#gpro_October312025November142025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2021CreditFacilityPeriodDomain_01a130e6-8da8-76cc-8e33-ee3f1616ce85" xlink:to="loc_gpro_October312025November142025Member_01a130e6-8da8-751b-877c-c4a636d07329" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_November152025November302025Member_01a130e6-8da8-77d9-9800-5f63750917f3" xlink:href="gpro-20260630.xsd#gpro_November152025November302025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2021CreditFacilityPeriodDomain_01a130e6-8da8-76cc-8e33-ee3f1616ce85" xlink:to="loc_gpro_November152025November302025Member_01a130e6-8da8-77d9-9800-5f63750917f3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_December12025ThereafterMember_01a130e6-8da8-74b7-b017-4a6b59907006" xlink:href="gpro-20260630.xsd#gpro_December12025ThereafterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2021CreditFacilityPeriodDomain_01a130e6-8da8-76cc-8e33-ee3f1616ce85" xlink:to="loc_gpro_December12025ThereafterMember_01a130e6-8da8-74b7-b017-4a6b59907006" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_Feb2026ToBorrowingBaseConversionDateMember_01a130e6-8da8-72b9-aabb-a34c23b98f76" xlink:href="gpro-20260630.xsd#gpro_Feb2026ToBorrowingBaseConversionDateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2021CreditFacilityPeriodDomain_01a130e6-8da8-76cc-8e33-ee3f1616ce85" xlink:to="loc_gpro_Feb2026ToBorrowingBaseConversionDateMember_01a130e6-8da8-72b9-aabb-a34c23b98f76" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_EndingDecember312025Member_01a130e6-8da8-7692-a8d4-7db93f37ab3b" xlink:href="gpro-20260630.xsd#gpro_EndingDecember312025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2021CreditFacilityPeriodDomain_01a130e6-8da8-76cc-8e33-ee3f1616ce85" xlink:to="loc_gpro_EndingDecember312025Member_01a130e6-8da8-7692-a8d4-7db93f37ab3b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_EndingMarch312026Member_01a130e6-8da8-755b-9117-0c6ac2c6cefb" xlink:href="gpro-20260630.xsd#gpro_EndingMarch312026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2021CreditFacilityPeriodDomain_01a130e6-8da8-76cc-8e33-ee3f1616ce85" xlink:to="loc_gpro_EndingMarch312026Member_01a130e6-8da8-755b-9117-0c6ac2c6cefb" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_October122026November92026Member_01a130e6-8da8-7a56-b55f-d315824495b0" xlink:href="gpro-20260630.xsd#gpro_October122026November92026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2021CreditFacilityPeriodDomain_01a130e6-8da8-76cc-8e33-ee3f1616ce85" xlink:to="loc_gpro_October122026November92026Member_01a130e6-8da8-7a56-b55f-d315824495b0" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_November92026January42027Member_01a130e6-8da8-7fe1-9ed2-7a36c4cf5472" xlink:href="gpro-20260630.xsd#gpro_November92026January42027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2021CreditFacilityPeriodDomain_01a130e6-8da8-76cc-8e33-ee3f1616ce85" xlink:to="loc_gpro_November92026January42027Member_01a130e6-8da8-7fe1-9ed2-7a36c4cf5472" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2025CreditFacilityPeriodAxis_01a130e6-8da8-7de2-910e-d3a167568830" xlink:href="gpro-20260630.xsd#gpro_A2025CreditFacilityPeriodAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_01a130e6-8da8-7a5c-a3f0-6c32b27ed30d" xlink:to="loc_gpro_A2025CreditFacilityPeriodAxis_01a130e6-8da8-7de2-910e-d3a167568830" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2025CreditFacilityPeriodDomain_01a130e6-8da8-7de2-910e-d3a167568830_default" xlink:href="gpro-20260630.xsd#gpro_A2025CreditFacilityPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gpro_A2025CreditFacilityPeriodAxis_01a130e6-8da8-7de2-910e-d3a167568830" xlink:to="loc_gpro_A2025CreditFacilityPeriodDomain_01a130e6-8da8-7de2-910e-d3a167568830_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2025CreditFacilityPeriodDomain_01a130e6-8da8-77b7-ac80-8acbb2edb594" xlink:href="gpro-20260630.xsd#gpro_A2025CreditFacilityPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gpro_A2025CreditFacilityPeriodAxis_01a130e6-8da8-7de2-910e-d3a167568830" xlink:to="loc_gpro_A2025CreditFacilityPeriodDomain_01a130e6-8da8-77b7-ac80-8acbb2edb594" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_CurrentLiquidityRequirementMember_01a130e6-8da8-79df-a1e3-2f47dc0fe2ab" xlink:href="gpro-20260630.xsd#gpro_CurrentLiquidityRequirementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2025CreditFacilityPeriodDomain_01a130e6-8da8-77b7-ac80-8acbb2edb594" xlink:to="loc_gpro_CurrentLiquidityRequirementMember_01a130e6-8da8-79df-a1e3-2f47dc0fe2ab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_FiscalQuarterEndingDecember312025Member_01a130e6-8da8-7f22-8dd7-3eefa50f8613" xlink:href="gpro-20260630.xsd#gpro_FiscalQuarterEndingDecember312025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2025CreditFacilityPeriodDomain_01a130e6-8da8-77b7-ac80-8acbb2edb594" xlink:to="loc_gpro_FiscalQuarterEndingDecember312025Member_01a130e6-8da8-7f22-8dd7-3eefa50f8613" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_FourConsecutiveFiscalQuartersEndingMarch312026Member_01a130e6-8da8-7489-aa9c-3b8ce4071e8f" xlink:href="gpro-20260630.xsd#gpro_FourConsecutiveFiscalQuartersEndingMarch312026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2025CreditFacilityPeriodDomain_01a130e6-8da8-77b7-ac80-8acbb2edb594" xlink:to="loc_gpro_FourConsecutiveFiscalQuartersEndingMarch312026Member_01a130e6-8da8-7489-aa9c-3b8ce4071e8f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_FourConsecutiveFiscalQuartersEndingJune302026Member_01a130e6-8da8-70cf-b657-6605a04795c6" xlink:href="gpro-20260630.xsd#gpro_FourConsecutiveFiscalQuartersEndingJune302026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2025CreditFacilityPeriodDomain_01a130e6-8da8-77b7-ac80-8acbb2edb594" xlink:to="loc_gpro_FourConsecutiveFiscalQuartersEndingJune302026Member_01a130e6-8da8-70cf-b657-6605a04795c6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_FourConsecutiveFiscalQuartersEndingSept302026Member_01a130e6-8da8-7ec3-ae2e-708a362fb6ce" xlink:href="gpro-20260630.xsd#gpro_FourConsecutiveFiscalQuartersEndingSept302026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2025CreditFacilityPeriodDomain_01a130e6-8da8-77b7-ac80-8acbb2edb594" xlink:to="loc_gpro_FourConsecutiveFiscalQuartersEndingSept302026Member_01a130e6-8da8-7ec3-ae2e-708a362fb6ce" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_FourConsecutiveFiscalQuartersEndingDec312026Member_01a130e6-8da8-7ff6-b2b8-10be19394b79" xlink:href="gpro-20260630.xsd#gpro_FourConsecutiveFiscalQuartersEndingDec312026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2025CreditFacilityPeriodDomain_01a130e6-8da8-77b7-ac80-8acbb2edb594" xlink:to="loc_gpro_FourConsecutiveFiscalQuartersEndingDec312026Member_01a130e6-8da8-7ff6-b2b8-10be19394b79" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ThereafterMember_01a130e6-8da8-795f-8265-37f1c922a503" xlink:href="gpro-20260630.xsd#gpro_ThereafterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2025CreditFacilityPeriodDomain_01a130e6-8da8-77b7-ac80-8acbb2edb594" xlink:to="loc_gpro_ThereafterMember_01a130e6-8da8-795f-8265-37f1c922a503" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_FiscalMonthEndingJuly312026Member_01a130e6-8da8-78e9-8fb0-c8c424ec2317" xlink:href="gpro-20260630.xsd#gpro_FiscalMonthEndingJuly312026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2025CreditFacilityPeriodDomain_01a130e6-8da8-77b7-ac80-8acbb2edb594" xlink:to="loc_gpro_FiscalMonthEndingJuly312026Member_01a130e6-8da8-78e9-8fb0-c8c424ec2317" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_FiscalMonthEndingAugust312026Member_01a130e6-8da8-7dbb-a69f-4e062fa4b462" xlink:href="gpro-20260630.xsd#gpro_FiscalMonthEndingAugust312026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2025CreditFacilityPeriodDomain_01a130e6-8da8-77b7-ac80-8acbb2edb594" xlink:to="loc_gpro_FiscalMonthEndingAugust312026Member_01a130e6-8da8-7dbb-a69f-4e062fa4b462" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_FiscalMonthsThereafterMember_01a130e6-8da8-7bf6-a492-a7c8f0662629" xlink:href="gpro-20260630.xsd#gpro_FiscalMonthsThereafterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2025CreditFacilityPeriodDomain_01a130e6-8da8-77b7-ac80-8acbb2edb594" xlink:to="loc_gpro_FiscalMonthsThereafterMember_01a130e6-8da8-7bf6-a492-a7c8f0662629" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_FourConsecutiveFiscalQuartersEndingSept302027Member_01a130e6-8da8-7f4b-a349-08dc433e42be" xlink:href="gpro-20260630.xsd#gpro_FourConsecutiveFiscalQuartersEndingSept302027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2025CreditFacilityPeriodDomain_01a130e6-8da8-77b7-ac80-8acbb2edb594" xlink:to="loc_gpro_FourConsecutiveFiscalQuartersEndingSept302027Member_01a130e6-8da8-7f4b-a349-08dc433e42be" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_FourConsecutiveFiscalQuartersEndingDec312027Member_01a130e6-8da8-7f2f-9816-6f1986290bd0" xlink:href="gpro-20260630.xsd#gpro_FourConsecutiveFiscalQuartersEndingDec312027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2025CreditFacilityPeriodDomain_01a130e6-8da8-77b7-ac80-8acbb2edb594" xlink:to="loc_gpro_FourConsecutiveFiscalQuartersEndingDec312027Member_01a130e6-8da8-7f2f-9816-6f1986290bd0" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_BeforeJune302026Member_01a130e6-8da8-7942-86f0-2c42f8e7f1f9" xlink:href="gpro-20260630.xsd#gpro_BeforeJune302026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2025CreditFacilityPeriodDomain_01a130e6-8da8-77b7-ac80-8acbb2edb594" xlink:to="loc_gpro_BeforeJune302026Member_01a130e6-8da8-7942-86f0-2c42f8e7f1f9" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_01a130e6-8da8-7bb7-ad9a-41a8b349b651" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_01a130e6-8da8-7bb7-ad9a-41a8b349b651" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_01a130e6-8da8-7db3-aad8-abd0d0bd9903" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_01a130e6-8da8-7db3-aad8-abd0d0bd9903" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_LineofCreditFacilityUnusedCapacityMinimumFixedChargeCoverageRatioAmount_01a130e6-8da8-70db-bdc8-35c5f7d533e6" xlink:href="gpro-20260630.xsd#gpro_LineofCreditFacilityUnusedCapacityMinimumFixedChargeCoverageRatioAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_gpro_LineofCreditFacilityUnusedCapacityMinimumFixedChargeCoverageRatioAmount_01a130e6-8da8-70db-bdc8-35c5f7d533e6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_01a130e6-8da8-747b-a9c4-6687231ff488" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_01a130e6-8da8-747b-a9c4-6687231ff488" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_01a130e6-8da8-717a-97ae-a58c6bb8b8a4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentConvertibleConversionPrice1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_01a130e6-8da8-717a-97ae-a58c6bb8b8a4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_01a130e6-8da8-78c2-86d0-23aa26d6c894" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_01a130e6-8da8-78c2-86d0-23aa26d6c894" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebt_01a130e6-8da8-7557-919d-ab41b1e3cc34" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_InterestExpenseDebt_01a130e6-8da8-7557-919d-ab41b1e3cc34" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_01a130e6-8da8-7a62-902b-c71b553a2aa2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfFinancingCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_AmortizationOfFinancingCosts_01a130e6-8da8-7a62-902b-c71b553a2aa2" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_DebtInstrumentCovenantComplianceAssetCoverageRatio_01a130e6-8da8-743d-b49a-ce75afcdb992" xlink:href="gpro-20260630.xsd#gpro_DebtInstrumentCovenantComplianceAssetCoverageRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_gpro_DebtInstrumentCovenantComplianceAssetCoverageRatio_01a130e6-8da8-743d-b49a-ce75afcdb992" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_LineOfCreditFacilityUnusedCapacityMinimumLiquidityRequirementAmount_01a130e6-8da8-7120-87fa-96a7d92d7b3d" xlink:href="gpro-20260630.xsd#gpro_LineOfCreditFacilityUnusedCapacityMinimumLiquidityRequirementAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_gpro_LineOfCreditFacilityUnusedCapacityMinimumLiquidityRequirementAmount_01a130e6-8da8-7120-87fa-96a7d92d7b3d" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_LineOfCreditFacilityUnusedCapacityQualifiedCash_01a130e6-8da8-79ee-bdb3-f3090bbef2d5" xlink:href="gpro-20260630.xsd#gpro_LineOfCreditFacilityUnusedCapacityQualifiedCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_gpro_LineOfCreditFacilityUnusedCapacityQualifiedCash_01a130e6-8da8-79ee-bdb3-f3090bbef2d5" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01a130e6-8da8-7fa9-b7c0-8f9306b03169" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01a130e6-8da8-7fa9-b7c0-8f9306b03169" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01a130e6-8da8-7901-8517-b03f3c59b9a7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermBorrowings_01a130e6-8da8-7055-990a-b4b38084362a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_ShortTermBorrowings_01a130e6-8da8-7055-990a-b4b38084362a" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_01a130e6-8da8-7b8a-8b69-ec8e59c1c7af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LettersOfCreditOutstandingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_01a130e6-8da8-7b8a-8b69-ec8e59c1c7af" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLinesOfCredit_01a130e6-8da8-7fd7-ab19-26083f9dbf26" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfLinesOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_RepaymentsOfLinesOfCredit_01a130e6-8da8-7fd7-ab19-26083f9dbf26" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_LineOfCreditFacilityUnusedCapacityMinimumAEBITDARequirementAmount_01a130e6-8da8-7bec-a259-94b0482d056b" xlink:href="gpro-20260630.xsd#gpro_LineOfCreditFacilityUnusedCapacityMinimumAEBITDARequirementAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_gpro_LineOfCreditFacilityUnusedCapacityMinimumAEBITDARequirementAmount_01a130e6-8da8-7bec-a259-94b0482d056b" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightOutstanding_01a130e6-8da8-7fc7-bedf-0ae3a9100d8a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_ClassOfWarrantOrRightOutstanding_01a130e6-8da8-7fc7-bedf-0ae3a9100d8a" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_01a130e6-8da8-71e9-a965-b1bcddde8d5f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_01a130e6-8da8-71e9-a965-b1bcddde8d5f" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_01a130e6-8da8-7328-a43e-cfb7573001b0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentUnamortizedDiscount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_01a130e6-8da8-7328-a43e-cfb7573001b0" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfDebtDiscountPremium_01a130e6-8da8-7938-94b8-8ef72cfddbf2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfDebtDiscountPremium"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_AmortizationOfDebtDiscountPremium_01a130e6-8da8-7938-94b8-8ef72cfddbf2" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityFairValueOfAmountOutstanding_01a130e6-8da8-7baf-a5f0-235ef326f103" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityFairValueOfAmountOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_LineOfCreditFacilityFairValueOfAmountOutstanding_01a130e6-8da8-7baf-a5f0-235ef326f103" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantsAndRightsOutstanding_01a130e6-8da8-748d-ab44-c6f49a7b666a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WarrantsAndRightsOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_WarrantsAndRightsOutstanding_01a130e6-8da8-748d-ab44-c6f49a7b666a" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_01a130e6-8da8-7d22-a5dc-a8f133dca9d5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_01a130e6-8da8-7d22-a5dc-a8f133dca9d5" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfPrivatePlacement_01a130e6-8da8-7410-862e-b5e4c3262fde" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromIssuanceOfPrivatePlacement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfPrivatePlacement_01a130e6-8da8-7410-862e-b5e4c3262fde" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_PotentialPrivatePlacementPriorToRegStatement_01a130e6-8da8-713a-a7e7-0eac3f7f09d8" xlink:href="gpro-20260630.xsd#gpro_PotentialPrivatePlacementPriorToRegStatement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_gpro_PotentialPrivatePlacementPriorToRegStatement_01a130e6-8da8-713a-a7e7-0eac3f7f09d8" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_PotentialPrivatePlacementFollowingClosingConditions_01a130e6-8da8-76e2-b569-cbd30558f717" xlink:href="gpro-20260630.xsd#gpro_PotentialPrivatePlacementFollowingClosingConditions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_gpro_PotentialPrivatePlacementFollowingClosingConditions_01a130e6-8da8-76e2-b569-cbd30558f717" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_01a130e6-8da8-7e2c-9e99-1cda4029a1d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_01a130e6-8da8-7e2c-9e99-1cda4029a1d3" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_RedemptionPremiumPercentage_01a130e6-8da8-7d66-bec3-df37b359560f" xlink:href="gpro-20260630.xsd#gpro_RedemptionPremiumPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_gpro_RedemptionPremiumPercentage_01a130e6-8da8-7d66-bec3-df37b359560f" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ConvertibleDebenturesIssueDiscount_01a130e6-8da8-7089-808f-e2171f1a67b7" xlink:href="gpro-20260630.xsd#gpro_ConvertibleDebenturesIssueDiscount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_gpro_ConvertibleDebenturesIssueDiscount_01a130e6-8da8-7089-808f-e2171f1a67b7" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExcessStockSharesAuthorized_01a130e6-8da8-735f-ab8d-067bac85595e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ExcessStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_ExcessStockSharesAuthorized_01a130e6-8da8-735f-ab8d-067bac85595e" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentIssuedPrincipal_01a130e6-8da8-71d5-bd4d-6e7da8dc2ed7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentIssuedPrincipal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_DebtInstrumentIssuedPrincipal_01a130e6-8da8-71d5-bd4d-6e7da8dc2ed7" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_DerivativeExpense_01a130e6-8da8-721b-942b-383b0f8a0586" xlink:href="gpro-20260630.xsd#gpro_DerivativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_gpro_DerivativeExpense_01a130e6-8da8-721b-942b-383b0f8a0586" xlink:type="arc" order="32"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleBeneficialConversionFeature_01a130e6-8da8-7d95-a13f-87f585e8fd8c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentConvertibleBeneficialConversionFeature"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_DebtInstrumentConvertibleBeneficialConversionFeature_01a130e6-8da8-7d95-a13f-87f585e8fd8c" xlink:type="arc" order="33"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_AggregateDebtDiscount_01a130e6-8da8-7bcb-80dd-d4268c20a7e3" xlink:href="gpro-20260630.xsd#gpro_AggregateDebtDiscount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_gpro_AggregateDebtDiscount_01a130e6-8da8-7bcb-80dd-d4268c20a7e3" xlink:type="arc" order="34"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_01a130e6-8da8-7849-964c-5d9f1ebe8ed3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_01a130e6-8da8-7849-964c-5d9f1ebe8ed3" xlink:type="arc" order="35"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_DebtInstrumentConvertedPrincipal_01a130e6-8da8-78f3-9b4d-2f00ed6c6cca" xlink:href="gpro-20260630.xsd#gpro_DebtInstrumentConvertedPrincipal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_gpro_DebtInstrumentConvertedPrincipal_01a130e6-8da8-78f3-9b4d-2f00ed6c6cca" xlink:type="arc" order="36"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_DebtRepaymentWeeklyInstallments_01a130e6-8da8-7e4d-b1d7-501cfbe68a31" xlink:href="gpro-20260630.xsd#gpro_DebtRepaymentWeeklyInstallments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_gpro_DebtRepaymentWeeklyInstallments_01a130e6-8da8-7e4d-b1d7-501cfbe68a31" xlink:type="arc" order="37"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_DebtInstrumentRestructuringFee_01a130e6-8da8-71f5-a25d-daf0e7bd8adb" xlink:href="gpro-20260630.xsd#gpro_DebtInstrumentRestructuringFee"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_gpro_DebtInstrumentRestructuringFee_01a130e6-8da8-71f5-a25d-daf0e7bd8adb" xlink:type="arc" order="38"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_DebtInstrumentSuccessFee_01a130e6-8da8-7858-ae7d-5ec333c9255f" xlink:href="gpro-20260630.xsd#gpro_DebtInstrumentSuccessFee"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a130e6-8da8-75f9-8c44-85326ae31734" xlink:to="loc_gpro_DebtInstrumentSuccessFee_01a130e6-8da8-7858-ae7d-5ec333c9255f" xlink:type="arc" order="39"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/StockholdersequityDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#StockholdersequityDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/StockholdersequityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_01a130e6-8da8-7be9-ab9d-b8111a6e80cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_01a130e6-8da8-7a65-9006-b758ce1f7f2b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8da8-7be9-ab9d-b8111a6e80cc" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_01a130e6-8da8-7a65-9006-b758ce1f7f2b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualAxis_01a130e6-8da8-7ddb-adf6-17f36b421560" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_TitleOfIndividualAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a130e6-8da8-7a65-9006-b758ce1f7f2b" xlink:to="loc_srt_TitleOfIndividualAxis_01a130e6-8da8-7ddb-adf6-17f36b421560" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_01a130e6-8da8-7ddb-adf6-17f36b421560_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_TitleOfIndividualAxis_01a130e6-8da8-7ddb-adf6-17f36b421560" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_01a130e6-8da8-7ddb-adf6-17f36b421560_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_01a130e6-8da8-79bf-9be6-0a47487af31b" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_TitleOfIndividualAxis_01a130e6-8da8-7ddb-adf6-17f36b421560" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_01a130e6-8da8-79bf-9be6-0a47487af31b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_01a130e6-8da8-78e4-8f00-ccad080321ce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a130e6-8da8-7a65-9006-b758ce1f7f2b" xlink:to="loc_us-gaap_AwardTypeAxis_01a130e6-8da8-78e4-8f00-ccad080321ce" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-78e4-8f00-ccad080321ce_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_01a130e6-8da8-78e4-8f00-ccad080321ce" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-78e4-8f00-ccad080321ce_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-7861-8eb1-f253d9e2c5b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_01a130e6-8da8-78e4-8f00-ccad080321ce" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-7861-8eb1-f253d9e2c5b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_01a130e6-8da8-7415-8d45-23801a389164" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-7861-8eb1-f253d9e2c5b1" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_01a130e6-8da8-7415-8d45-23801a389164" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_01a130e6-8da8-78c0-8ef6-25177bcc1e86" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-7861-8eb1-f253d9e2c5b1" xlink:to="loc_us-gaap_PerformanceSharesMember_01a130e6-8da8-78c0-8ef6-25177bcc1e86" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8da8-74d9-aa6c-63b484dca31b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a130e6-8da8-7a65-9006-b758ce1f7f2b" xlink:to="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8da8-74d9-aa6c-63b484dca31b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a130e6-8da8-74d9-aa6c-63b484dca31b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8da8-74d9-aa6c-63b484dca31b" xlink:to="loc_us-gaap_ClassOfStockDomain_01a130e6-8da8-74d9-aa6c-63b484dca31b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a130e6-8da8-750a-a236-1d1b59e4cc2a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8da8-74d9-aa6c-63b484dca31b" xlink:to="loc_us-gaap_ClassOfStockDomain_01a130e6-8da8-750a-a236-1d1b59e4cc2a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_01a130e6-8da8-7d21-bb2d-3eb12241ce5b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a130e6-8da8-750a-a236-1d1b59e4cc2a" xlink:to="loc_us-gaap_CommonClassAMember_01a130e6-8da8-7d21-bb2d-3eb12241ce5b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassBMember_01a130e6-8da8-71f6-8c93-6e68b1d231e7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a130e6-8da8-750a-a236-1d1b59e4cc2a" xlink:to="loc_us-gaap_CommonClassBMember_01a130e6-8da8-71f6-8c93-6e68b1d231e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a130e6-8da8-7541-861b-da24507eb6a5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_01a130e6-8da8-7a65-9006-b758ce1f7f2b" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a130e6-8da8-7541-861b-da24507eb6a5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a130e6-8da8-7541-861b-da24507eb6a5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a130e6-8da8-7541-861b-da24507eb6a5" xlink:to="loc_us-gaap_EquityComponentDomain_01a130e6-8da8-7541-861b-da24507eb6a5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a130e6-8da8-772c-8d63-c908c8673bb7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a130e6-8da8-7541-861b-da24507eb6a5" xlink:to="loc_us-gaap_EquityComponentDomain_01a130e6-8da8-772c-8d63-c908c8673bb7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_01a130e6-8da8-706e-9af8-37d248492b71" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a130e6-8da8-772c-8d63-c908c8673bb7" xlink:to="loc_us-gaap_TreasuryStockCommonMember_01a130e6-8da8-706e-9af8-37d248492b71" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_01a130e6-8da8-7f51-a799-25d4aaf880b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8da8-7be9-ab9d-b8111a6e80cc" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_01a130e6-8da8-7f51-a799-25d4aaf880b6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_01a130e6-8da8-7bbf-bdf1-91afee1ed5cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8da8-7be9-ab9d-b8111a6e80cc" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_01a130e6-8da8-7bbf-bdf1-91afee1ed5cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_CommonStockVotingRightsNumber_01a130e6-8da8-7840-a1a2-dc02d0437af9" xlink:href="gpro-20260630.xsd#gpro_CommonStockVotingRightsNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8da8-7be9-ab9d-b8111a6e80cc" xlink:to="loc_gpro_CommonStockVotingRightsNumber_01a130e6-8da8-7840-a1a2-dc02d0437af9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_01a130e6-8da8-7306-8acd-97f9606a0d13" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8da8-7be9-ab9d-b8111a6e80cc" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_01a130e6-8da8-7306-8acd-97f9606a0d13" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a130e6-8da8-7ae6-b848-9198eef1cae0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8da8-7be9-ab9d-b8111a6e80cc" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a130e6-8da8-7ae6-b848-9198eef1cae0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_01a130e6-8da8-7af6-818e-5d4d829357ce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8da8-7be9-ab9d-b8111a6e80cc" xlink:to="loc_us-gaap_CommonStockSharesIssued_01a130e6-8da8-7af6-818e-5d4d829357ce" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a130e6-8da8-7fa2-a36e-38553a5a554b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8da8-7be9-ab9d-b8111a6e80cc" xlink:to="loc_us-gaap_StockholdersEquity_01a130e6-8da8-7fa2-a36e-38553a5a554b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StockRepurchaseProgramAuthorizedAmount1_01a130e6-8da8-77c7-9db1-8983a3e735c1" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8da8-7be9-ab9d-b8111a6e80cc" xlink:to="loc_srt_StockRepurchaseProgramAuthorizedAmount1_01a130e6-8da8-77c7-9db1-8983a3e735c1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_01a130e6-8da8-739e-a0f6-ab4329608e20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_01a130e6-8da8-7be9-ab9d-b8111a6e80cc" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_01a130e6-8da8-739e-a0f6-ab4329608e20" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/EmployeebenefitplansNarrativeDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#EmployeebenefitplansNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/EmployeebenefitplansNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-7458-8b18-d808cf3a68a5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-7497-a320-adc283284659" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-7458-8b18-d808cf3a68a5" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-7497-a320-adc283284659" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_01a130e6-8da8-7aa5-a260-625209b6adc2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-7497-a320-adc283284659" xlink:to="loc_us-gaap_PlanNameAxis_01a130e6-8da8-7aa5-a260-625209b6adc2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_01a130e6-8da8-7aa5-a260-625209b6adc2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_01a130e6-8da8-7aa5-a260-625209b6adc2" xlink:to="loc_us-gaap_PlanNameDomain_01a130e6-8da8-7aa5-a260-625209b6adc2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_01a130e6-8da8-707b-8d5b-fe3541f31dc8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_01a130e6-8da8-7aa5-a260-625209b6adc2" xlink:to="loc_us-gaap_PlanNameDomain_01a130e6-8da8-707b-8d5b-fe3541f31dc8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2024EquityIncentivePlansMember_01a130e6-8da8-7609-8ff8-20c8af2672d1" xlink:href="gpro-20260630.xsd#gpro_A2024EquityIncentivePlansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_01a130e6-8da8-707b-8d5b-fe3541f31dc8" xlink:to="loc_gpro_A2024EquityIncentivePlansMember_01a130e6-8da8-7609-8ff8-20c8af2672d1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a130e6-8da8-798e-82cc-65582efed737" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-7497-a320-adc283284659" xlink:to="loc_srt_RangeAxis_01a130e6-8da8-798e-82cc-65582efed737" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a130e6-8da8-798e-82cc-65582efed737_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a130e6-8da8-798e-82cc-65582efed737" xlink:to="loc_srt_RangeMember_01a130e6-8da8-798e-82cc-65582efed737_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a130e6-8da8-72a1-bdaa-6f99752546ee" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a130e6-8da8-798e-82cc-65582efed737" xlink:to="loc_srt_RangeMember_01a130e6-8da8-72a1-bdaa-6f99752546ee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a130e6-8da8-7341-bdfd-8aadbd33e50e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a130e6-8da8-72a1-bdaa-6f99752546ee" xlink:to="loc_srt_MinimumMember_01a130e6-8da8-7341-bdfd-8aadbd33e50e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a130e6-8da8-7354-8799-cab026880bc7" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a130e6-8da8-72a1-bdaa-6f99752546ee" xlink:to="loc_srt_MaximumMember_01a130e6-8da8-7354-8799-cab026880bc7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_01a130e6-8da8-7337-bd7a-16eab51f8958" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-7497-a320-adc283284659" xlink:to="loc_us-gaap_AwardTypeAxis_01a130e6-8da8-7337-bd7a-16eab51f8958" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-7337-bd7a-16eab51f8958_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_01a130e6-8da8-7337-bd7a-16eab51f8958" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-7337-bd7a-16eab51f8958_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-741e-bc39-5b5e41fa7885" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_01a130e6-8da8-7337-bd7a-16eab51f8958" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-741e-bc39-5b5e41fa7885" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_01a130e6-8da8-7adf-aa2d-da94f11df83d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeStockOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-741e-bc39-5b5e41fa7885" xlink:to="loc_us-gaap_EmployeeStockOptionMember_01a130e6-8da8-7adf-aa2d-da94f11df83d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_01a130e6-8da8-7051-8a30-acdce33f01f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-741e-bc39-5b5e41fa7885" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_01a130e6-8da8-7051-8a30-acdce33f01f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_01a130e6-8da8-708a-9da9-86df5aa9d63c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-741e-bc39-5b5e41fa7885" xlink:to="loc_us-gaap_PerformanceSharesMember_01a130e6-8da8-708a-9da9-86df5aa9d63c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_EmployeeStockPurchasePlanSharesMember_01a130e6-8da8-75fc-acdc-e1624571556b" xlink:href="gpro-20260630.xsd#gpro_EmployeeStockPurchasePlanSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-741e-bc39-5b5e41fa7885" xlink:to="loc_gpro_EmployeeStockPurchasePlanSharesMember_01a130e6-8da8-75fc-acdc-e1624571556b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_StockOptionsESPPPerformanceShareUnitsPSUsandRestrictedStockUnitsRSUsMemberDomain_01a130e6-8da8-723b-943a-e41d033c8007" xlink:href="gpro-20260630.xsd#gpro_StockOptionsESPPPerformanceShareUnitsPSUsandRestrictedStockUnitsRSUsMemberDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-741e-bc39-5b5e41fa7885" xlink:to="loc_gpro_StockOptionsESPPPerformanceShareUnitsPSUsandRestrictedStockUnitsRSUsMemberDomain_01a130e6-8da8-723b-943a-e41d033c8007" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingAxis_01a130e6-8da8-718e-9fce-5c9f0e11931c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VestingAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-7497-a320-adc283284659" xlink:to="loc_us-gaap_VestingAxis_01a130e6-8da8-718e-9fce-5c9f0e11931c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingDomain_01a130e6-8da8-718e-9fce-5c9f0e11931c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VestingDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VestingAxis_01a130e6-8da8-718e-9fce-5c9f0e11931c" xlink:to="loc_us-gaap_VestingDomain_01a130e6-8da8-718e-9fce-5c9f0e11931c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingDomain_01a130e6-8da8-7f6a-8924-d7e32e0cf1dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VestingDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VestingAxis_01a130e6-8da8-718e-9fce-5c9f0e11931c" xlink:to="loc_us-gaap_VestingDomain_01a130e6-8da8-7f6a-8924-d7e32e0cf1dd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualAxis_01a130e6-8da8-7e13-91a1-a7ed3e62bd3e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_TitleOfIndividualAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-7497-a320-adc283284659" xlink:to="loc_srt_TitleOfIndividualAxis_01a130e6-8da8-7e13-91a1-a7ed3e62bd3e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_01a130e6-8da8-7e13-91a1-a7ed3e62bd3e_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_TitleOfIndividualAxis_01a130e6-8da8-7e13-91a1-a7ed3e62bd3e" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_01a130e6-8da8-7e13-91a1-a7ed3e62bd3e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_01a130e6-8da8-7a92-b7c5-ee9f7328528a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_TitleOfIndividualAxis_01a130e6-8da8-7e13-91a1-a7ed3e62bd3e" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_01a130e6-8da8-7a92-b7c5-ee9f7328528a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_01a130e6-8da8-7f22-8e7a-e9b6db75f132" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-7497-a320-adc283284659" xlink:to="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_01a130e6-8da8-7f22-8e7a-e9b6db75f132" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_01a130e6-8da8-7f22-8e7a-e9b6db75f132_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_01a130e6-8da8-7f22-8e7a-e9b6db75f132" xlink:to="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_01a130e6-8da8-7f22-8e7a-e9b6db75f132_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_01a130e6-8da8-76e5-aad1-454e4a85a1b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_01a130e6-8da8-7f22-8e7a-e9b6db75f132" xlink:to="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_01a130e6-8da8-76e5-aad1-454e4a85a1b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredBonusMember_01a130e6-8da8-76c7-ab92-29b49ade9e73" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredBonusMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_01a130e6-8da8-76e5-aad1-454e4a85a1b5" xlink:to="loc_us-gaap_DeferredBonusMember_01a130e6-8da8-76c7-ab92-29b49ade9e73" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_01a130e6-8da8-7904-b71e-9b3f03fb8a88" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-7458-8b18-d808cf3a68a5" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_01a130e6-8da8-7904-b71e-9b3f03fb8a88" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_01a130e6-8da8-76e0-8090-a73752f7b494" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-7458-8b18-d808cf3a68a5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_01a130e6-8da8-76e0-8090-a73752f7b494" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent_01a130e6-8da8-701d-81f1-1fb0b7379192" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-7458-8b18-d808cf3a68a5" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent_01a130e6-8da8-701d-81f1-1fb0b7379192" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a130e6-8da8-727d-8d30-695466f41af7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-7458-8b18-d808cf3a68a5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a130e6-8da8-727d-8d30-695466f41af7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOwnershipPlanESOPWeightedAveragePurchasePriceOfSharesPurchased_01a130e6-8da8-7e62-b7e5-0b3e6a216e43" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeStockOwnershipPlanESOPWeightedAveragePurchasePriceOfSharesPurchased"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-7458-8b18-d808cf3a68a5" xlink:to="loc_us-gaap_EmployeeStockOwnershipPlanESOPWeightedAveragePurchasePriceOfSharesPurchased_01a130e6-8da8-7e62-b7e5-0b3e6a216e43" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a130e6-8da8-7fb2-9b6a-f5644c3482ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-7458-8b18-d808cf3a68a5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a130e6-8da8-7fb2-9b6a-f5644c3482ad" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_01a130e6-8da8-72a2-b970-4dcac5fcff84" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-7458-8b18-d808cf3a68a5" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_01a130e6-8da8-72a2-b970-4dcac5fcff84" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_01a130e6-8da8-7a36-bf94-50cdaa3cfb2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-7458-8b18-d808cf3a68a5" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_01a130e6-8da8-7a36-bf94-50cdaa3cfb2e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_01a130e6-8da8-7558-aea7-6916ba314941" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-7458-8b18-d808cf3a68a5" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_01a130e6-8da8-7558-aea7-6916ba314941" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_01a130e6-8da8-7941-a862-a3995dfa5ead" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-7458-8b18-d808cf3a68a5" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_01a130e6-8da8-7941-a862-a3995dfa5ead" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_01a130e6-8da8-7d41-90a4-cc4419f86d7c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-7458-8b18-d808cf3a68a5" xlink:to="loc_us-gaap_ShareBasedCompensation_01a130e6-8da8-7d41-90a4-cc4419f86d7c" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/EmployeebenefitplansRestrictedStockUnitsActivityDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#EmployeebenefitplansRestrictedStockUnitsActivityDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/EmployeebenefitplansRestrictedStockUnitsActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-7084-b9f2-2412055f870d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-72ee-bf46-05e27fc87faa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-7084-b9f2-2412055f870d" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-72ee-bf46-05e27fc87faa" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_01a130e6-8da8-732c-ae5d-55639b62de62" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-72ee-bf46-05e27fc87faa" xlink:to="loc_us-gaap_AwardTypeAxis_01a130e6-8da8-732c-ae5d-55639b62de62" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-732c-ae5d-55639b62de62_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_01a130e6-8da8-732c-ae5d-55639b62de62" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-732c-ae5d-55639b62de62_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-7a1d-9781-70f285c73f6f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_01a130e6-8da8-732c-ae5d-55639b62de62" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-7a1d-9781-70f285c73f6f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_01a130e6-8da8-7687-8a4f-0e20fba7ef94" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-7a1d-9781-70f285c73f6f" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_01a130e6-8da8-7687-8a4f-0e20fba7ef94" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_01a130e6-8da8-7a6a-b76c-b72d0996978c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-7a1d-9781-70f285c73f6f" xlink:to="loc_us-gaap_PerformanceSharesMember_01a130e6-8da8-7a6a-b76c-b72d0996978c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a130e6-8da8-7329-a336-3f857a3df419" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-7084-b9f2-2412055f870d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a130e6-8da8-7329-a336-3f857a3df419" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a130e6-8da8-7b31-80e8-a877048bdf64" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a130e6-8da8-7329-a336-3f857a3df419" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a130e6-8da8-7b31-80e8-a877048bdf64" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a130e6-8da8-73dd-a260-bbb50cb86b3b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a130e6-8da8-7329-a336-3f857a3df419" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a130e6-8da8-73dd-a260-bbb50cb86b3b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_01a130e6-8da8-778c-aa81-714e02575033" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a130e6-8da8-7329-a336-3f857a3df419" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_01a130e6-8da8-778c-aa81-714e02575033" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_01a130e6-8da8-7db9-8202-ec8c597337ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a130e6-8da8-7329-a336-3f857a3df419" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_01a130e6-8da8-7db9-8202-ec8c597337ae" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a130e6-8da8-7b64-93e3-aa7df0abd7c5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a130e6-8da8-7992-a58d-7c29a61c88e5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-7084-b9f2-2412055f870d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a130e6-8da8-7992-a58d-7c29a61c88e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a130e6-8da8-7d36-837d-b4fbbe7e50f7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a130e6-8da8-7992-a58d-7c29a61c88e5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a130e6-8da8-7d36-837d-b4fbbe7e50f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a130e6-8da8-7c47-8e57-d174fd33461b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a130e6-8da8-7992-a58d-7c29a61c88e5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a130e6-8da8-7c47-8e57-d174fd33461b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_01a130e6-8da8-7b6a-80b9-b955f75c33cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a130e6-8da8-7992-a58d-7c29a61c88e5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_01a130e6-8da8-7b6a-80b9-b955f75c33cf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_01a130e6-8da8-702d-8736-035f2be082f4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a130e6-8da8-7992-a58d-7c29a61c88e5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_01a130e6-8da8-702d-8736-035f2be082f4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a130e6-8da8-79ee-a237-411310bad133" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/EmployeebenefitplansAllocationofStockbasedCompensationExpenseDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#EmployeebenefitplansAllocationofStockbasedCompensationExpenseDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/EmployeebenefitplansAllocationofStockbasedCompensationExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a130e6-8da8-7ad2-9b37-1096a3f38d7c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_01a130e6-8da8-7658-b155-cb1d166d33d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a130e6-8da8-7ad2-9b37-1096a3f38d7c" xlink:to="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_01a130e6-8da8-7658-b155-cb1d166d33d2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a130e6-8da8-71d2-9efd-6800c5dacd2f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfIncomeLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_01a130e6-8da8-7658-b155-cb1d166d33d2" xlink:to="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a130e6-8da8-71d2-9efd-6800c5dacd2f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_01a130e6-8da8-72ff-ad45-2620ea3d2975" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_01a130e6-8da8-7658-b155-cb1d166d33d2" xlink:to="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_01a130e6-8da8-72ff-ad45-2620ea3d2975" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_01a130e6-8da8-72ff-ad45-2620ea3d2975_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_01a130e6-8da8-72ff-ad45-2620ea3d2975" xlink:to="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_01a130e6-8da8-72ff-ad45-2620ea3d2975_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_01a130e6-8da8-7595-9fed-3ae630821173" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_01a130e6-8da8-72ff-ad45-2620ea3d2975" xlink:to="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_01a130e6-8da8-7595-9fed-3ae630821173" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredBonusMember_01a130e6-8da8-777b-9619-beb0bfec119e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredBonusMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_01a130e6-8da8-7595-9fed-3ae630821173" xlink:to="loc_us-gaap_DeferredBonusMember_01a130e6-8da8-777b-9619-beb0bfec119e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_01a130e6-8da8-784a-9d96-10a48ee72ac6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a130e6-8da8-7ad2-9b37-1096a3f38d7c" xlink:to="loc_us-gaap_ShareBasedCompensation_01a130e6-8da8-784a-9d96-10a48ee72ac6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_01a130e6-8da8-7721-8d60-a055c686b0bf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a130e6-8da8-7ad2-9b37-1096a3f38d7c" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_01a130e6-8da8-7721-8d60-a055c686b0bf" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/EmployeebenefitplansAllocationofStockbasedCompensationExpenseDetails_1" xlink:type="simple" xlink:href="gpro-20260630.xsd#EmployeebenefitplansAllocationofStockbasedCompensationExpenseDetails_1"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/EmployeebenefitplansAllocationofStockbasedCompensationExpenseDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a130e6-8da8-7ad2-9b37-1096a3f38d7c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_01a130e6-8da8-7658-b155-cb1d166d33d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a130e6-8da8-7ad2-9b37-1096a3f38d7c" xlink:to="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_01a130e6-8da8-7658-b155-cb1d166d33d2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_01a130e6-8da8-72ff-ad45-2620ea3d2975" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_01a130e6-8da8-7658-b155-cb1d166d33d2" xlink:to="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_01a130e6-8da8-72ff-ad45-2620ea3d2975" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_01a130e6-8da8-72ff-ad45-2620ea3d2975_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_01a130e6-8da8-72ff-ad45-2620ea3d2975" xlink:to="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_01a130e6-8da8-72ff-ad45-2620ea3d2975_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_01a130e6-8da8-7595-9fed-3ae630821173" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_01a130e6-8da8-72ff-ad45-2620ea3d2975" xlink:to="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_01a130e6-8da8-7595-9fed-3ae630821173" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredBonusMember_01a130e6-8da8-777b-9619-beb0bfec119e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredBonusMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_01a130e6-8da8-7595-9fed-3ae630821173" xlink:to="loc_us-gaap_DeferredBonusMember_01a130e6-8da8-777b-9619-beb0bfec119e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_01a130e6-8da8-784a-9d96-10a48ee72ac6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a130e6-8da8-7ad2-9b37-1096a3f38d7c" xlink:to="loc_us-gaap_ShareBasedCompensation_01a130e6-8da8-784a-9d96-10a48ee72ac6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_01a130e6-8da8-7721-8d60-a055c686b0bf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a130e6-8da8-7ad2-9b37-1096a3f38d7c" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_01a130e6-8da8-7721-8d60-a055c686b0bf" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/EmployeebenefitplansPerformanceStockUnitsactivityDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#EmployeebenefitplansPerformanceStockUnitsactivityDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/EmployeebenefitplansPerformanceStockUnitsactivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-798d-8f43-bf994a364989" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-7ef0-b2f6-490c0753bdb2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-798d-8f43-bf994a364989" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-7ef0-b2f6-490c0753bdb2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_01a130e6-8da8-7835-b2f3-2504ac6883ac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-7ef0-b2f6-490c0753bdb2" xlink:to="loc_us-gaap_PlanNameAxis_01a130e6-8da8-7835-b2f3-2504ac6883ac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_01a130e6-8da8-7835-b2f3-2504ac6883ac_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_01a130e6-8da8-7835-b2f3-2504ac6883ac" xlink:to="loc_us-gaap_PlanNameDomain_01a130e6-8da8-7835-b2f3-2504ac6883ac_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_01a130e6-8da8-7bdb-b9fe-61c131464070" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_01a130e6-8da8-7835-b2f3-2504ac6883ac" xlink:to="loc_us-gaap_PlanNameDomain_01a130e6-8da8-7bdb-b9fe-61c131464070" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardDateAxis_01a130e6-8da8-7fbc-939a-d7de2e6ed04d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-7ef0-b2f6-490c0753bdb2" xlink:to="loc_us-gaap_AwardDateAxis_01a130e6-8da8-7fbc-939a-d7de2e6ed04d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardDateDomain_01a130e6-8da8-7fbc-939a-d7de2e6ed04d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardDateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardDateAxis_01a130e6-8da8-7fbc-939a-d7de2e6ed04d" xlink:to="loc_us-gaap_AwardDateDomain_01a130e6-8da8-7fbc-939a-d7de2e6ed04d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardDateDomain_01a130e6-8da8-740d-9368-db2898d3f4dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardDateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardDateAxis_01a130e6-8da8-7fbc-939a-d7de2e6ed04d" xlink:to="loc_us-gaap_AwardDateDomain_01a130e6-8da8-740d-9368-db2898d3f4dd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_01a130e6-8da8-7674-b25c-a1502b2fd441" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-7ef0-b2f6-490c0753bdb2" xlink:to="loc_us-gaap_AwardTypeAxis_01a130e6-8da8-7674-b25c-a1502b2fd441" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-7674-b25c-a1502b2fd441_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_01a130e6-8da8-7674-b25c-a1502b2fd441" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-7674-b25c-a1502b2fd441_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-7190-94b0-0accf66ce471" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_01a130e6-8da8-7674-b25c-a1502b2fd441" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-7190-94b0-0accf66ce471" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_01a130e6-8da8-769c-ad2d-873c32cb773f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-7190-94b0-0accf66ce471" xlink:to="loc_us-gaap_PerformanceSharesMember_01a130e6-8da8-769c-ad2d-873c32cb773f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_01a130e6-8da8-7ace-bd31-52ab4a06bb2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a130e6-8da8-7190-94b0-0accf66ce471" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_01a130e6-8da8-7ace-bd31-52ab4a06bb2e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8da8-744b-acc3-27626e6ec49f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-7ef0-b2f6-490c0753bdb2" xlink:to="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8da8-744b-acc3-27626e6ec49f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a130e6-8da8-744b-acc3-27626e6ec49f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8da8-744b-acc3-27626e6ec49f" xlink:to="loc_us-gaap_ClassOfStockDomain_01a130e6-8da8-744b-acc3-27626e6ec49f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a130e6-8da8-791b-92d2-76fcb37f2b6e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8da8-744b-acc3-27626e6ec49f" xlink:to="loc_us-gaap_ClassOfStockDomain_01a130e6-8da8-791b-92d2-76fcb37f2b6e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingAxis_01a130e6-8da8-761f-b05d-0f0b86a0f25d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VestingAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a130e6-8da8-7ef0-b2f6-490c0753bdb2" xlink:to="loc_us-gaap_VestingAxis_01a130e6-8da8-761f-b05d-0f0b86a0f25d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingDomain_01a130e6-8da8-761f-b05d-0f0b86a0f25d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VestingDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VestingAxis_01a130e6-8da8-761f-b05d-0f0b86a0f25d" xlink:to="loc_us-gaap_VestingDomain_01a130e6-8da8-761f-b05d-0f0b86a0f25d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingDomain_01a130e6-8da8-70f5-9a61-2480d1144194" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VestingDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VestingAxis_01a130e6-8da8-761f-b05d-0f0b86a0f25d" xlink:to="loc_us-gaap_VestingDomain_01a130e6-8da8-70f5-9a61-2480d1144194" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a130e6-8da8-7259-9993-19173ffb1052" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-798d-8f43-bf994a364989" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a130e6-8da8-7259-9993-19173ffb1052" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a130e6-8da8-7699-84ba-9bad3b5a3de3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-798d-8f43-bf994a364989" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a130e6-8da8-7699-84ba-9bad3b5a3de3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a130e6-8da8-773b-b253-53e8c4fa1829" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-798d-8f43-bf994a364989" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a130e6-8da8-773b-b253-53e8c4fa1829" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a130e6-8da8-7351-93b1-dd58dff9ea7b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-798d-8f43-bf994a364989" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a130e6-8da8-7351-93b1-dd58dff9ea7b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_01a130e6-8da8-7c0d-ac46-aaa38aa18c49" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-798d-8f43-bf994a364989" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_01a130e6-8da8-7c0d-ac46-aaa38aa18c49" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_01a130e6-8da8-7b90-83e4-6f9664af4561" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-798d-8f43-bf994a364989" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_01a130e6-8da8-7b90-83e4-6f9664af4561" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_01a130e6-8da8-7d06-beab-c807ec3d7e40" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-798d-8f43-bf994a364989" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_01a130e6-8da8-7d06-beab-c807ec3d7e40" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_01a130e6-8da8-741c-be5a-d955b4c773cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a130e6-8da8-798d-8f43-bf994a364989" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_01a130e6-8da8-741c-be5a-d955b4c773cd" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/NetlosspershareAdditionalInformationDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#NetlosspershareAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/NetlosspershareAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a130e6-8da8-73c3-be8e-7877ae4a60c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_01a130e6-8da8-72c8-87fa-46d930dc7dd4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a130e6-8da8-73c3-be8e-7877ae4a60c7" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_01a130e6-8da8-72c8-87fa-46d930dc7dd4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_01a130e6-8da8-7e09-b9c1-ca55502ab795" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_01a130e6-8da8-72c8-87fa-46d930dc7dd4" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_01a130e6-8da8-7e09-b9c1-ca55502ab795" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-7e09-b9c1-ca55502ab795_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a130e6-8da8-7e09-b9c1-ca55502ab795" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-7e09-b9c1-ca55502ab795_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-7f74-8503-f8c892f8b872" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a130e6-8da8-7e09-b9c1-ca55502ab795" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-7f74-8503-f8c892f8b872" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ConvertibleSeniorNotesDue2025Member_01a130e6-8da8-7098-950d-5f3de3a17f01" xlink:href="gpro-20260630.xsd#gpro_ConvertibleSeniorNotesDue2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a130e6-8da8-7f74-8503-f8c892f8b872" xlink:to="loc_gpro_ConvertibleSeniorNotesDue2025Member_01a130e6-8da8-7098-950d-5f3de3a17f01" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8da8-70f2-80a3-42a22c16c0b8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_01a130e6-8da8-72c8-87fa-46d930dc7dd4" xlink:to="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8da8-70f2-80a3-42a22c16c0b8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a130e6-8da8-70f2-80a3-42a22c16c0b8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8da8-70f2-80a3-42a22c16c0b8" xlink:to="loc_us-gaap_ClassOfStockDomain_01a130e6-8da8-70f2-80a3-42a22c16c0b8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_01a130e6-8da8-751f-8adc-582689de49d8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_01a130e6-8da8-70f2-80a3-42a22c16c0b8" xlink:to="loc_us-gaap_ClassOfStockDomain_01a130e6-8da8-751f-8adc-582689de49d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_01a130e6-8da8-7e86-b48f-48ef5ed1abae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a130e6-8da8-751f-8adc-582689de49d8" xlink:to="loc_us-gaap_CommonClassAMember_01a130e6-8da8-7e86-b48f-48ef5ed1abae" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassBMember_01a130e6-8da8-76cd-8aa8-ae70d4515417" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonClassBMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_01a130e6-8da8-751f-8adc-582689de49d8" xlink:to="loc_us-gaap_CommonClassBMember_01a130e6-8da8-76cd-8aa8-ae70d4515417" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_01a130e6-8da8-77a4-a56e-101064964236" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_01a130e6-8da8-72c8-87fa-46d930dc7dd4" xlink:to="loc_us-gaap_ShortTermDebtTypeAxis_01a130e6-8da8-77a4-a56e-101064964236" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_01a130e6-8da8-77a4-a56e-101064964236_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_01a130e6-8da8-77a4-a56e-101064964236" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_01a130e6-8da8-77a4-a56e-101064964236_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_01a130e6-8da8-7f02-b581-35fbe209b13c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_01a130e6-8da8-77a4-a56e-101064964236" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_01a130e6-8da8-7f02-b581-35fbe209b13c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ConvertibleSeniorNotesDue2025Member_01a130e6-8da8-777f-8b30-207a2a2f7b45" xlink:href="gpro-20260630.xsd#gpro_ConvertibleSeniorNotesDue2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_01a130e6-8da8-7f02-b581-35fbe209b13c" xlink:to="loc_gpro_ConvertibleSeniorNotesDue2025Member_01a130e6-8da8-777f-8b30-207a2a2f7b45" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_01a130e6-8da8-71c6-bc44-99973ffd3738" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a130e6-8da8-73c3-be8e-7877ae4a60c7" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_01a130e6-8da8-71c6-bc44-99973ffd3738" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_CommonStockVotingRightsNumber_01a130e6-8da8-72e9-8dfe-985db8b6d6ef" xlink:href="gpro-20260630.xsd#gpro_CommonStockVotingRightsNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a130e6-8da8-73c3-be8e-7877ae4a60c7" xlink:to="loc_gpro_CommonStockVotingRightsNumber_01a130e6-8da8-72e9-8dfe-985db8b6d6ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConversionOfStockSharesIssued1_01a130e6-8da8-77f8-b2e0-8c32cadc739d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConversionOfStockSharesIssued1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a130e6-8da8-73c3-be8e-7877ae4a60c7" xlink:to="loc_us-gaap_ConversionOfStockSharesIssued1_01a130e6-8da8-77f8-b2e0-8c32cadc739d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ConversionOfStockMaxiumPercentOfOutstandingSharesInClassOfTotalOutstandingShares_01a130e6-8da8-7924-87f1-a8307ef45e5d" xlink:href="gpro-20260630.xsd#gpro_ConversionOfStockMaxiumPercentOfOutstandingSharesInClassOfTotalOutstandingShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a130e6-8da8-73c3-be8e-7877ae4a60c7" xlink:to="loc_gpro_ConversionOfStockMaxiumPercentOfOutstandingSharesInClassOfTotalOutstandingShares_01a130e6-8da8-7924-87f1-a8307ef45e5d" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/NetlosspershareAntidilutiveSecuritiesExcludedfromComputationofNetIncomeperShareDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#NetlosspershareAntidilutiveSecuritiesExcludedfromComputationofNetIncomeperShareDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/NetlosspershareAntidilutiveSecuritiesExcludedfromComputationofNetIncomeperShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a130e6-8da8-7684-8f24-76faf015ee8f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_01a130e6-8da8-7336-8137-7d949e72491e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a130e6-8da8-7684-8f24-76faf015ee8f" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_01a130e6-8da8-7336-8137-7d949e72491e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_01a130e6-8da8-7f99-b058-788ada7bf894" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_01a130e6-8da8-7336-8137-7d949e72491e" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_01a130e6-8da8-7f99-b058-788ada7bf894" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a130e6-8da8-7f99-b058-788ada7bf894_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_01a130e6-8da8-7f99-b058-788ada7bf894" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a130e6-8da8-7f99-b058-788ada7bf894_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a130e6-8da8-7772-aad6-c5d4005fddf0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_01a130e6-8da8-7f99-b058-788ada7bf894" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a130e6-8da8-7772-aad6-c5d4005fddf0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtSecuritiesMember_01a130e6-8da8-7637-8007-a32f1555a845" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConvertibleDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a130e6-8da8-7772-aad6-c5d4005fddf0" xlink:to="loc_us-gaap_ConvertibleDebtSecuritiesMember_01a130e6-8da8-7637-8007-a32f1555a845" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockCompensationPlanMember_01a130e6-8da8-7535-a8b2-82761352c0f7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockCompensationPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a130e6-8da8-7772-aad6-c5d4005fddf0" xlink:to="loc_us-gaap_StockCompensationPlanMember_01a130e6-8da8-7535-a8b2-82761352c0f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_01a130e6-8da8-7d07-911e-93184011f104" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WarrantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a130e6-8da8-7772-aad6-c5d4005fddf0" xlink:to="loc_us-gaap_WarrantMember_01a130e6-8da8-7d07-911e-93184011f104" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ConvertibleDebenturesMember_01a130e6-8da8-70f9-b232-980f422aa615" xlink:href="gpro-20260630.xsd#gpro_ConvertibleDebenturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a130e6-8da8-7772-aad6-c5d4005fddf0" xlink:to="loc_gpro_ConvertibleDebenturesMember_01a130e6-8da8-70f9-b232-980f422aa615" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_01a130e6-8da8-7578-aa05-03ec9e22108f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a130e6-8da8-7684-8f24-76faf015ee8f" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_01a130e6-8da8-7578-aa05-03ec9e22108f" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/IncomeTaxesDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#IncomeTaxesDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/IncomeTaxesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowanceLineItems_01a130e6-8da8-7d67-a65e-ea94b886262a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValuationAllowanceLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowanceTable_01a130e6-8da8-7100-b14b-213f357df831" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValuationAllowanceTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_01a130e6-8da8-7d67-a65e-ea94b886262a" xlink:to="loc_us-gaap_ValuationAllowanceTable_01a130e6-8da8-7100-b14b-213f357df831" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicDistributionAxis_01a130e6-8da8-7c49-a2b9-3ede411cbb26" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeographicDistributionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ValuationAllowanceTable_01a130e6-8da8-7100-b14b-213f357df831" xlink:to="loc_us-gaap_GeographicDistributionAxis_01a130e6-8da8-7c49-a2b9-3ede411cbb26" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicDistributionDomain_01a130e6-8da8-7c49-a2b9-3ede411cbb26_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeographicDistributionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GeographicDistributionAxis_01a130e6-8da8-7c49-a2b9-3ede411cbb26" xlink:to="loc_us-gaap_GeographicDistributionDomain_01a130e6-8da8-7c49-a2b9-3ede411cbb26_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicDistributionDomain_01a130e6-8da8-7d21-9660-e0b94717b63f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeographicDistributionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GeographicDistributionAxis_01a130e6-8da8-7c49-a2b9-3ede411cbb26" xlink:to="loc_us-gaap_GeographicDistributionDomain_01a130e6-8da8-7d21-9660-e0b94717b63f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicDistributionForeignMember_01a130e6-8da8-7017-8962-dc7fbf0af7ba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeographicDistributionForeignMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeographicDistributionDomain_01a130e6-8da8-7d21-9660-e0b94717b63f" xlink:to="loc_us-gaap_GeographicDistributionForeignMember_01a130e6-8da8-7017-8962-dc7fbf0af7ba" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicDistributionDomesticMember_01a130e6-8da8-7d23-a647-ea942cfbac6d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeographicDistributionDomesticMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeographicDistributionDomain_01a130e6-8da8-7d21-9660-e0b94717b63f" xlink:to="loc_us-gaap_GeographicDistributionDomesticMember_01a130e6-8da8-7d23-a647-ea942cfbac6d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_01a130e6-8da8-7d90-a3c3-a65cf7527ba4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_01a130e6-8da8-7d67-a65e-ea94b886262a" xlink:to="loc_us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_01a130e6-8da8-7d90-a3c3-a65cf7527ba4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_01a130e6-8da8-7557-a0d5-e05563314594" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowanceLineItems_01a130e6-8da8-7d67-a65e-ea94b886262a" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_01a130e6-8da8-7557-a0d5-e05563314594" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/RelatedpartytransactionsDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#RelatedpartytransactionsDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/RelatedpartytransactionsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_01a130e6-8da8-74fe-b631-1642409ef8fb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_01a130e6-8da8-7c4b-a9c0-5a94e2d5ea18" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a130e6-8da8-74fe-b631-1642409ef8fb" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_01a130e6-8da8-7c4b-a9c0-5a94e2d5ea18" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a130e6-8da8-74b6-b8b8-9cb1bfa3f2b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_01a130e6-8da8-7c4b-a9c0-5a94e2d5ea18" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a130e6-8da8-74b6-b8b8-9cb1bfa3f2b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_01a130e6-8da8-74b6-b8b8-9cb1bfa3f2b5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a130e6-8da8-74b6-b8b8-9cb1bfa3f2b5" xlink:to="loc_us-gaap_RelatedPartyDomain_01a130e6-8da8-74b6-b8b8-9cb1bfa3f2b5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_01a130e6-8da8-7dc4-8e2d-1daf29733461" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a130e6-8da8-74b6-b8b8-9cb1bfa3f2b5" xlink:to="loc_us-gaap_RelatedPartyDomain_01a130e6-8da8-7dc4-8e2d-1daf29733461" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ChiefExecutiveOfficerMember_01a130e6-8da8-7206-9a91-156f0e42ee32" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ChiefExecutiveOfficerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_01a130e6-8da8-7dc4-8e2d-1daf29733461" xlink:to="loc_srt_ChiefExecutiveOfficerMember_01a130e6-8da8-7206-9a91-156f0e42ee32" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_01a130e6-8da8-7105-b0e3-1d3dcfd3e35d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_01a130e6-8da8-7c4b-a9c0-5a94e2d5ea18" xlink:to="loc_us-gaap_RelatedPartyTransactionAxis_01a130e6-8da8-7105-b0e3-1d3dcfd3e35d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_01a130e6-8da8-7105-b0e3-1d3dcfd3e35d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_01a130e6-8da8-7105-b0e3-1d3dcfd3e35d" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_01a130e6-8da8-7105-b0e3-1d3dcfd3e35d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_01a130e6-8da8-7785-818a-5e92b3ebbf21" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_01a130e6-8da8-7105-b0e3-1d3dcfd3e35d" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_01a130e6-8da8-7785-818a-5e92b3ebbf21" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_01a130e6-8da8-78e5-9a53-f5f6c571515e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a130e6-8da8-74fe-b631-1642409ef8fb" xlink:to="loc_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_01a130e6-8da8-78e5-9a53-f5f6c571515e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_01a130e6-8da8-7333-9591-09157d42265c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a130e6-8da8-74fe-b631-1642409ef8fb" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_01a130e6-8da8-7333-9591-09157d42265c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_01a130e6-8da8-7f27-95fb-5fe177891a77" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a130e6-8da8-74fe-b631-1642409ef8fb" xlink:to="loc_us-gaap_CommonStockSharesIssued_01a130e6-8da8-7f27-95fb-5fe177891a77" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesIssuedPricePerShare_01a130e6-8da8-7d62-802c-ac70046d62fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharesIssuedPricePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a130e6-8da8-74fe-b631-1642409ef8fb" xlink:to="loc_us-gaap_SharesIssuedPricePerShare_01a130e6-8da8-7d62-802c-ac70046d62fd" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/CommitmentandContingenciesDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#CommitmentandContingenciesDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/CommitmentandContingenciesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentLineItems_01a130e6-8da8-7d38-a633-043a39266f4b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermPurchaseCommitmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentTable_01a130e6-8da8-73f9-ac0f-cb04f1b3e26e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermPurchaseCommitmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_01a130e6-8da8-7d38-a633-043a39266f4b" xlink:to="loc_us-gaap_LongTermPurchaseCommitmentTable_01a130e6-8da8-73f9-ac0f-cb04f1b3e26e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsAxis_01a130e6-8da8-7e6a-ad82-e3b9b2bb2e35" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_01a130e6-8da8-73f9-ac0f-cb04f1b3e26e" xlink:to="loc_us-gaap_OtherCommitmentsAxis_01a130e6-8da8-7e6a-ad82-e3b9b2bb2e35" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_01a130e6-8da8-7e6a-ad82-e3b9b2bb2e35_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_OtherCommitmentsAxis_01a130e6-8da8-7e6a-ad82-e3b9b2bb2e35" xlink:to="loc_us-gaap_OtherCommitmentsDomain_01a130e6-8da8-7e6a-ad82-e3b9b2bb2e35_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_01a130e6-8da8-701e-8618-8f5c3c7206b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_OtherCommitmentsAxis_01a130e6-8da8-7e6a-ad82-e3b9b2bb2e35" xlink:to="loc_us-gaap_OtherCommitmentsDomain_01a130e6-8da8-701e-8618-8f5c3c7206b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths_01a130e6-8da8-73a7-aec3-f44c2b7429c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_01a130e6-8da8-7d38-a633-043a39266f4b" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths_01a130e6-8da8-73a7-aec3-f44c2b7429c1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_01a130e6-8da8-706c-8dbe-f933c778372f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_01a130e6-8da8-7d38-a633-043a39266f4b" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_01a130e6-8da8-706c-8dbe-f933c778372f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_01a130e6-8da8-76a7-9cb4-725d83967917" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_01a130e6-8da8-7d38-a633-043a39266f4b" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_01a130e6-8da8-76a7-9cb4-725d83967917" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_01a130e6-8da8-73fe-95e8-62723932c4b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_01a130e6-8da8-7d38-a633-043a39266f4b" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_01a130e6-8da8-73fe-95e8-62723932c4b9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_01a130e6-8da8-76db-9d1a-b3001d76b974" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_01a130e6-8da8-7d38-a633-043a39266f4b" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_01a130e6-8da8-76db-9d1a-b3001d76b974" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_01a130e6-8da8-7450-96bc-6912059271c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_01a130e6-8da8-7d38-a633-043a39266f4b" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_01a130e6-8da8-7450-96bc-6912059271c6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_01a130e6-8da8-769a-9f0b-0da4c75996a7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_01a130e6-8da8-7d38-a633-043a39266f4b" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_01a130e6-8da8-769a-9f0b-0da4c75996a7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_01a130e6-8da8-7203-89ca-2c24ef4cf91b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_01a130e6-8da8-7d38-a633-043a39266f4b" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_01a130e6-8da8-7203-89ca-2c24ef4cf91b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_01a130e6-8da8-74bb-9ce8-5d952a8e37a1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_01a130e6-8da8-7d38-a633-043a39266f4b" xlink:to="loc_us-gaap_OperatingLeaseLiability_01a130e6-8da8-74bb-9ce8-5d952a8e37a1" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/ConcentrationsofriskandgeographicinformationNarrativeDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#ConcentrationsofriskandgeographicinformationNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/ConcentrationsofriskandgeographicinformationNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a130e6-8da8-7427-9b1f-5ad8c6f00e26" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EntityWideRevenueMajorCustomerLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_01a130e6-8da8-7a29-bcb7-757e93a0f0bf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a130e6-8da8-7427-9b1f-5ad8c6f00e26" xlink:to="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_01a130e6-8da8-7a29-bcb7-757e93a0f0bf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_01a130e6-8da8-766b-95b6-e25c64c31d33" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_01a130e6-8da8-7a29-bcb7-757e93a0f0bf" xlink:to="loc_srt_StatementGeographicalAxis_01a130e6-8da8-766b-95b6-e25c64c31d33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_01a130e6-8da8-766b-95b6-e25c64c31d33_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_01a130e6-8da8-766b-95b6-e25c64c31d33" xlink:to="loc_srt_SegmentGeographicalDomain_01a130e6-8da8-766b-95b6-e25c64c31d33_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_01a130e6-8da8-786c-be97-afdfaaa0f146" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_01a130e6-8da8-766b-95b6-e25c64c31d33" xlink:to="loc_srt_SegmentGeographicalDomain_01a130e6-8da8-786c-be97-afdfaaa0f146" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_01a130e6-8da8-78a8-aa6e-6321d2ce63cd" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_01a130e6-8da8-786c-be97-afdfaaa0f146" xlink:to="loc_country_US_01a130e6-8da8-78a8-aa6e-6321d2ce63cd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonUsMember_01a130e6-8da8-75b4-87cd-e191593ef2c0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_01a130e6-8da8-786c-be97-afdfaaa0f146" xlink:to="loc_us-gaap_NonUsMember_01a130e6-8da8-75b4-87cd-e191593ef2c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_01a130e6-8da8-7d20-a39c-a5f7f780ca0e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a130e6-8da8-7427-9b1f-5ad8c6f00e26" xlink:to="loc_us-gaap_Revenues_01a130e6-8da8-7d20-a39c-a5f7f780ca0e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsNoncurrent_01a130e6-8da8-7148-908b-3d6d3fed47ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a130e6-8da8-7427-9b1f-5ad8c6f00e26" xlink:to="loc_us-gaap_AssetsNoncurrent_01a130e6-8da8-7148-908b-3d6d3fed47ed" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/ConcentrationsofriskandgeographicinformationScheduleofCustomerConcentrationbyRiskFactorDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#ConcentrationsofriskandgeographicinformationScheduleofCustomerConcentrationbyRiskFactorDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/ConcentrationsofriskandgeographicinformationScheduleofCustomerConcentrationbyRiskFactorDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskLineItems_01a130e6-8da8-7af6-a34b-fa9ef1b686d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTable_01a130e6-8da8-72c5-9564-23e1b9f2500e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_01a130e6-8da8-7af6-a34b-fa9ef1b686d7" xlink:to="loc_us-gaap_ConcentrationRiskTable_01a130e6-8da8-72c5-9564-23e1b9f2500e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_01a130e6-8da8-7a72-884a-1148a35fbb85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_01a130e6-8da8-72c5-9564-23e1b9f2500e" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_01a130e6-8da8-7a72-884a-1148a35fbb85" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_01a130e6-8da8-7a72-884a-1148a35fbb85_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_01a130e6-8da8-7a72-884a-1148a35fbb85" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_01a130e6-8da8-7a72-884a-1148a35fbb85_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_01a130e6-8da8-741b-869f-960cfad4cb89" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_01a130e6-8da8-7a72-884a-1148a35fbb85" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_01a130e6-8da8-741b-869f-960cfad4cb89" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerConcentrationRiskMember_01a130e6-8da8-7ad0-bff3-4658c80ea229" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CustomerConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_01a130e6-8da8-741b-869f-960cfad4cb89" xlink:to="loc_us-gaap_CustomerConcentrationRiskMember_01a130e6-8da8-7ad0-bff3-4658c80ea229" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_01a130e6-8da8-7b9e-b164-a3a7bc2eef9c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_01a130e6-8da8-72c5-9564-23e1b9f2500e" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_01a130e6-8da8-7b9e-b164-a3a7bc2eef9c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a130e6-8da8-7b9e-b164-a3a7bc2eef9c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_01a130e6-8da8-7b9e-b164-a3a7bc2eef9c" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a130e6-8da8-7b9e-b164-a3a7bc2eef9c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a130e6-8da8-7295-82d5-e08af484f32f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_01a130e6-8da8-7b9e-b164-a3a7bc2eef9c" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a130e6-8da8-7295-82d5-e08af484f32f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableMember_01a130e6-8da8-75af-890e-10af9dcad818" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a130e6-8da8-7295-82d5-e08af484f32f" xlink:to="loc_us-gaap_AccountsReceivableMember_01a130e6-8da8-75af-890e-10af9dcad818" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesRevenueNetMember_01a130e6-8da8-747b-a293-899555f5a224" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SalesRevenueNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_01a130e6-8da8-7295-82d5-e08af484f32f" xlink:to="loc_us-gaap_SalesRevenueNetMember_01a130e6-8da8-747b-a293-899555f5a224" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_01a130e6-8da8-7618-becb-ddbc569a2465" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MajorCustomersAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_01a130e6-8da8-72c5-9564-23e1b9f2500e" xlink:to="loc_srt_MajorCustomersAxis_01a130e6-8da8-7618-becb-ddbc569a2465" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_01a130e6-8da8-7618-becb-ddbc569a2465_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MajorCustomersAxis_01a130e6-8da8-7618-becb-ddbc569a2465" xlink:to="loc_srt_NameOfMajorCustomerDomain_01a130e6-8da8-7618-becb-ddbc569a2465_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_01a130e6-8da8-76e6-ab96-6cba1426d32a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MajorCustomersAxis_01a130e6-8da8-7618-becb-ddbc569a2465" xlink:to="loc_srt_NameOfMajorCustomerDomain_01a130e6-8da8-76e6-ab96-6cba1426d32a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_CustomerARetailerMember_01a130e6-8da8-7560-b7f9-0c47d23f8031" xlink:href="gpro-20260630.xsd#gpro_CustomerARetailerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_01a130e6-8da8-76e6-ab96-6cba1426d32a" xlink:to="loc_gpro_CustomerARetailerMember_01a130e6-8da8-7560-b7f9-0c47d23f8031" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_CustomerBRetailerMemberMember_01a130e6-8da8-7f4f-856c-040b96be927c" xlink:href="gpro-20260630.xsd#gpro_CustomerBRetailerMemberMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_01a130e6-8da8-76e6-ab96-6cba1426d32a" xlink:to="loc_gpro_CustomerBRetailerMemberMember_01a130e6-8da8-7f4f-856c-040b96be927c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_CustomerCRetailerMember_01a130e6-8da8-7326-bced-d19e354279fe" xlink:href="gpro-20260630.xsd#gpro_CustomerCRetailerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_01a130e6-8da8-76e6-ab96-6cba1426d32a" xlink:to="loc_gpro_CustomerCRetailerMember_01a130e6-8da8-7326-bced-d19e354279fe" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_CustomerDRetailerMember_01a130e6-8da8-74f0-9952-b03aa85e534e" xlink:href="gpro-20260630.xsd#gpro_CustomerDRetailerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_01a130e6-8da8-76e6-ab96-6cba1426d32a" xlink:to="loc_gpro_CustomerDRetailerMember_01a130e6-8da8-74f0-9952-b03aa85e534e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_01a130e6-8da8-7def-8ed8-565efdbafaf2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_01a130e6-8da8-7af6-a34b-fa9ef1b686d7" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_01a130e6-8da8-7def-8ed8-565efdbafaf2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableSignificantSales_01a130e6-8da8-7876-bfb0-a30ca3be1569" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableSignificantSales"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_01a130e6-8da8-7af6-a34b-fa9ef1b686d7" xlink:to="loc_us-gaap_FinancingReceivableSignificantSales_01a130e6-8da8-7876-bfb0-a30ca3be1569" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfAccountsReceivable_01a130e6-8da8-78ba-b83b-9e4af119ae2a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnSaleOfAccountsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_01a130e6-8da8-7af6-a34b-fa9ef1b686d7" xlink:to="loc_us-gaap_GainLossOnSaleOfAccountsReceivable_01a130e6-8da8-78ba-b83b-9e4af119ae2a" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/ConcentrationsofriskandgeographicinformationScheduleofRevenuebyGeographicSegmentDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#ConcentrationsofriskandgeographicinformationScheduleofRevenuebyGeographicSegmentDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/ConcentrationsofriskandgeographicinformationScheduleofRevenuebyGeographicSegmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_01a130e6-8da8-72b9-9e94-b8ea27eb2186" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a130e6-8da8-7c26-9f20-f7268c2aa8ce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a130e6-8da8-72b9-9e94-b8ea27eb2186" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a130e6-8da8-7c26-9f20-f7268c2aa8ce" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_01a130e6-8da8-742f-8765-064bda905d50" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a130e6-8da8-7c26-9f20-f7268c2aa8ce" xlink:to="loc_srt_StatementGeographicalAxis_01a130e6-8da8-742f-8765-064bda905d50" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_01a130e6-8da8-742f-8765-064bda905d50_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_01a130e6-8da8-742f-8765-064bda905d50" xlink:to="loc_srt_SegmentGeographicalDomain_01a130e6-8da8-742f-8765-064bda905d50_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_01a130e6-8da8-74aa-8ac8-48e6c2569ef6" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_01a130e6-8da8-742f-8765-064bda905d50" xlink:to="loc_srt_SegmentGeographicalDomain_01a130e6-8da8-74aa-8ac8-48e6c2569ef6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_01a130e6-8da8-7159-90bb-ca5474cbaa4e" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_01a130e6-8da8-74aa-8ac8-48e6c2569ef6" xlink:to="loc_country_US_01a130e6-8da8-7159-90bb-ca5474cbaa4e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AmericasMember_01a130e6-8da8-7a3b-a9f5-50ee95065ef0" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_AmericasMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_01a130e6-8da8-74aa-8ac8-48e6c2569ef6" xlink:to="loc_srt_AmericasMember_01a130e6-8da8-7a3b-a9f5-50ee95065ef0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EMEAMember_01a130e6-8da8-7d25-b70d-4dfd67f3fe53" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EMEAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_01a130e6-8da8-74aa-8ac8-48e6c2569ef6" xlink:to="loc_us-gaap_EMEAMember_01a130e6-8da8-7d25-b70d-4dfd67f3fe53" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AsiaPacificMember_01a130e6-8da8-7446-a408-10ac7bbc1b3e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_AsiaPacificMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_01a130e6-8da8-74aa-8ac8-48e6c2569ef6" xlink:to="loc_srt_AsiaPacificMember_01a130e6-8da8-7446-a408-10ac7bbc1b3e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_01a130e6-8da8-7564-9822-606d150d272b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a130e6-8da8-72b9-9e94-b8ea27eb2186" xlink:to="loc_us-gaap_Revenues_01a130e6-8da8-7564-9822-606d150d272b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/RestructuringchargesRestructuringCostsDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#RestructuringchargesRestructuringCostsDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/RestructuringchargesRestructuringCostsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_01a130e6-8e5e-7783-8abe-a5638a2a312d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a130e6-8e5e-73d9-b5fb-c855971943bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a130e6-8e5e-7783-8abe-a5638a2a312d" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a130e6-8e5e-73d9-b5fb-c855971943bc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a130e6-8e5e-78b6-9595-c0c0ab05b695" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfIncomeLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a130e6-8e5e-73d9-b5fb-c855971943bc" xlink:to="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a130e6-8e5e-78b6-9595-c0c0ab05b695" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_01a130e6-8e5e-78f0-8cf4-34ab9b0b9611" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a130e6-8e5e-73d9-b5fb-c855971943bc" xlink:to="loc_us-gaap_RestructuringPlanAxis_01a130e6-8e5e-78f0-8cf4-34ab9b0b9611" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_01a130e6-8e5e-78f0-8cf4-34ab9b0b9611_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_01a130e6-8e5e-78f0-8cf4-34ab9b0b9611" xlink:to="loc_us-gaap_RestructuringPlanDomain_01a130e6-8e5e-78f0-8cf4-34ab9b0b9611_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_01a130e6-8e5e-7826-bc41-92eccc21d9b0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_01a130e6-8e5e-78f0-8cf4-34ab9b0b9611" xlink:to="loc_us-gaap_RestructuringPlanDomain_01a130e6-8e5e-7826-bc41-92eccc21d9b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ThirdQuarter2024RestructuringMember_01a130e6-8e5e-7a43-b807-fbf413ee5bac" xlink:href="gpro-20260630.xsd#gpro_ThirdQuarter2024RestructuringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_01a130e6-8e5e-7826-bc41-92eccc21d9b0" xlink:to="loc_gpro_ThirdQuarter2024RestructuringMember_01a130e6-8e5e-7a43-b807-fbf413ee5bac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_01a130e6-8e5e-71d1-bf07-57bf43c12bfc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a130e6-8e5e-7783-8abe-a5638a2a312d" xlink:to="loc_us-gaap_RestructuringCharges_01a130e6-8e5e-71d1-bf07-57bf43c12bfc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringIncurredCostStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_01a130e6-8e5e-709d-ac43-2132b0642e95" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringIncurredCostStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a130e6-8e5e-7783-8abe-a5638a2a312d" xlink:to="loc_us-gaap_RestructuringIncurredCostStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_01a130e6-8e5e-709d-ac43-2132b0642e95" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/RestructuringchargesRestructuringCostsDetails_1" xlink:type="simple" xlink:href="gpro-20260630.xsd#RestructuringchargesRestructuringCostsDetails_1"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/RestructuringchargesRestructuringCostsDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_01a130e6-8e5e-7783-8abe-a5638a2a312d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a130e6-8e5e-73d9-b5fb-c855971943bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a130e6-8e5e-7783-8abe-a5638a2a312d" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a130e6-8e5e-73d9-b5fb-c855971943bc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_01a130e6-8e5e-78f0-8cf4-34ab9b0b9611" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a130e6-8e5e-73d9-b5fb-c855971943bc" xlink:to="loc_us-gaap_RestructuringPlanAxis_01a130e6-8e5e-78f0-8cf4-34ab9b0b9611" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_01a130e6-8e5e-78f0-8cf4-34ab9b0b9611_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_01a130e6-8e5e-78f0-8cf4-34ab9b0b9611" xlink:to="loc_us-gaap_RestructuringPlanDomain_01a130e6-8e5e-78f0-8cf4-34ab9b0b9611_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_01a130e6-8e5e-7826-bc41-92eccc21d9b0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_01a130e6-8e5e-78f0-8cf4-34ab9b0b9611" xlink:to="loc_us-gaap_RestructuringPlanDomain_01a130e6-8e5e-7826-bc41-92eccc21d9b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ThirdQuarter2024RestructuringMember_01a130e6-8e5e-7a43-b807-fbf413ee5bac" xlink:href="gpro-20260630.xsd#gpro_ThirdQuarter2024RestructuringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_01a130e6-8e5e-7826-bc41-92eccc21d9b0" xlink:to="loc_gpro_ThirdQuarter2024RestructuringMember_01a130e6-8e5e-7a43-b807-fbf413ee5bac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_01a130e6-8e5e-71d1-bf07-57bf43c12bfc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a130e6-8e5e-7783-8abe-a5638a2a312d" xlink:to="loc_us-gaap_RestructuringCharges_01a130e6-8e5e-71d1-bf07-57bf43c12bfc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringIncurredCostStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_01a130e6-8e5e-709d-ac43-2132b0642e95" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringIncurredCostStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a130e6-8e5e-7783-8abe-a5638a2a312d" xlink:to="loc_us-gaap_RestructuringIncurredCostStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_01a130e6-8e5e-709d-ac43-2132b0642e95" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/RestructuringchargesNarrativeDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#RestructuringchargesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/RestructuringchargesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_01a130e6-8e5e-7817-b160-c82fd2d3664f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a130e6-8e5e-75f6-a153-491830be5acc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a130e6-8e5e-7817-b160-c82fd2d3664f" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a130e6-8e5e-75f6-a153-491830be5acc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_01a130e6-8e5e-7291-91c5-92d1207ca185" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a130e6-8e5e-75f6-a153-491830be5acc" xlink:to="loc_us-gaap_RestructuringPlanAxis_01a130e6-8e5e-7291-91c5-92d1207ca185" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_01a130e6-8e5e-7291-91c5-92d1207ca185_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_01a130e6-8e5e-7291-91c5-92d1207ca185" xlink:to="loc_us-gaap_RestructuringPlanDomain_01a130e6-8e5e-7291-91c5-92d1207ca185_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_01a130e6-8e5e-7657-9188-00046ef154ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_01a130e6-8e5e-7291-91c5-92d1207ca185" xlink:to="loc_us-gaap_RestructuringPlanDomain_01a130e6-8e5e-7657-9188-00046ef154ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ThirdQuarter2024RestructuringMember_01a130e6-8e5e-79a4-8f38-de3c1946e85c" xlink:href="gpro-20260630.xsd#gpro_ThirdQuarter2024RestructuringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_01a130e6-8e5e-7657-9188-00046ef154ef" xlink:to="loc_gpro_ThirdQuarter2024RestructuringMember_01a130e6-8e5e-79a4-8f38-de3c1946e85c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2026RestructuringPlanMember_01a130e6-8e5e-7373-b79c-1030f4ca0969" xlink:href="gpro-20260630.xsd#gpro_A2026RestructuringPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_01a130e6-8e5e-7657-9188-00046ef154ef" xlink:to="loc_gpro_A2026RestructuringPlanMember_01a130e6-8e5e-7373-b79c-1030f4ca0969" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_01a130e6-8e5e-7cb6-82c3-2ac8f664135e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a130e6-8e5e-75f6-a153-491830be5acc" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_01a130e6-8e5e-7cb6-82c3-2ac8f664135e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_01a130e6-8e5e-7cb6-82c3-2ac8f664135e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_01a130e6-8e5e-7cb6-82c3-2ac8f664135e" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_01a130e6-8e5e-7cb6-82c3-2ac8f664135e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_01a130e6-8e5e-7e44-aab7-1c84c85bc496" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_01a130e6-8e5e-7cb6-82c3-2ac8f664135e" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_01a130e6-8e5e-7e44-aab7-1c84c85bc496" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeSeveranceMember_01a130e6-8e5e-7d7f-8a04-4b98e44d5648" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeSeveranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_01a130e6-8e5e-7e44-aab7-1c84c85bc496" xlink:to="loc_us-gaap_EmployeeSeveranceMember_01a130e6-8e5e-7d7f-8a04-4b98e44d5648" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherRestructuringMember_01a130e6-8e5e-7070-973f-9138998d92d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherRestructuringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_01a130e6-8e5e-7e44-aab7-1c84c85bc496" xlink:to="loc_us-gaap_OtherRestructuringMember_01a130e6-8e5e-7070-973f-9138998d92d7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractTerminationMember_01a130e6-8e5e-70e5-9882-2e56ea7aba85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractTerminationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_01a130e6-8e5e-7e44-aab7-1c84c85bc496" xlink:to="loc_us-gaap_ContractTerminationMember_01a130e6-8e5e-70e5-9882-2e56ea7aba85" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a130e6-8e5e-77d4-be3f-bc1d7008961f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a130e6-8e5e-75f6-a153-491830be5acc" xlink:to="loc_srt_RangeAxis_01a130e6-8e5e-77d4-be3f-bc1d7008961f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a130e6-8e5e-77d4-be3f-bc1d7008961f_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a130e6-8e5e-77d4-be3f-bc1d7008961f" xlink:to="loc_srt_RangeMember_01a130e6-8e5e-77d4-be3f-bc1d7008961f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a130e6-8e5e-780d-900f-98d4aba44902" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a130e6-8e5e-77d4-be3f-bc1d7008961f" xlink:to="loc_srt_RangeMember_01a130e6-8e5e-780d-900f-98d4aba44902" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a130e6-8e5e-7d4f-8820-dee70c5b6cce" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a130e6-8e5e-780d-900f-98d4aba44902" xlink:to="loc_srt_MaximumMember_01a130e6-8e5e-7d4f-8820-dee70c5b6cce" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a130e6-8e5e-7d97-9d87-3bb05f50cc80" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a130e6-8e5e-780d-900f-98d4aba44902" xlink:to="loc_srt_MinimumMember_01a130e6-8e5e-7d97-9d87-3bb05f50cc80" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2026RestructuringCashExpenditurePeriodAxis_01a130e6-8e5e-7790-bf26-0a1ece7e1904" xlink:href="gpro-20260630.xsd#gpro_A2026RestructuringCashExpenditurePeriodAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a130e6-8e5e-75f6-a153-491830be5acc" xlink:to="loc_gpro_A2026RestructuringCashExpenditurePeriodAxis_01a130e6-8e5e-7790-bf26-0a1ece7e1904" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2026RestructuringCashExpenditurePeriodDomain_01a130e6-8e5e-7790-bf26-0a1ece7e1904_default" xlink:href="gpro-20260630.xsd#gpro_A2026RestructuringCashExpenditurePeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_gpro_A2026RestructuringCashExpenditurePeriodAxis_01a130e6-8e5e-7790-bf26-0a1ece7e1904" xlink:to="loc_gpro_A2026RestructuringCashExpenditurePeriodDomain_01a130e6-8e5e-7790-bf26-0a1ece7e1904_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2026RestructuringCashExpenditurePeriodDomain_01a130e6-8e5e-7e14-bedb-88e09f2a0319" xlink:href="gpro-20260630.xsd#gpro_A2026RestructuringCashExpenditurePeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_gpro_A2026RestructuringCashExpenditurePeriodAxis_01a130e6-8e5e-7790-bf26-0a1ece7e1904" xlink:to="loc_gpro_A2026RestructuringCashExpenditurePeriodDomain_01a130e6-8e5e-7e14-bedb-88e09f2a0319" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2026SecondQuarterMember_01a130e6-8e5e-75ce-99f2-d386d8aacea0" xlink:href="gpro-20260630.xsd#gpro_A2026SecondQuarterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2026RestructuringCashExpenditurePeriodDomain_01a130e6-8e5e-7e14-bedb-88e09f2a0319" xlink:to="loc_gpro_A2026SecondQuarterMember_01a130e6-8e5e-75ce-99f2-d386d8aacea0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2026ThirdQuarterMember_01a130e6-8e5e-7061-9534-3d871427e3da" xlink:href="gpro-20260630.xsd#gpro_A2026ThirdQuarterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2026RestructuringCashExpenditurePeriodDomain_01a130e6-8e5e-7e14-bedb-88e09f2a0319" xlink:to="loc_gpro_A2026ThirdQuarterMember_01a130e6-8e5e-7061-9534-3d871427e3da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2026FourthQuarterMember_01a130e6-8e5e-7a66-80e9-f441c4b657d0" xlink:href="gpro-20260630.xsd#gpro_A2026FourthQuarterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_gpro_A2026RestructuringCashExpenditurePeriodDomain_01a130e6-8e5e-7e14-bedb-88e09f2a0319" xlink:to="loc_gpro_A2026FourthQuarterMember_01a130e6-8e5e-7a66-80e9-f441c4b657d0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminatedPeriodPercent_01a130e6-8e5e-7dd8-b096-8d59bb4fd66b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminatedPeriodPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a130e6-8e5e-7817-b160-c82fd2d3664f" xlink:to="loc_us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminatedPeriodPercent_01a130e6-8e5e-7dd8-b096-8d59bb4fd66b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeveranceCosts1_01a130e6-8e5e-7f1f-974e-d0f7551a39eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeveranceCosts1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a130e6-8e5e-7817-b160-c82fd2d3664f" xlink:to="loc_us-gaap_SeveranceCosts1_01a130e6-8e5e-7f1f-974e-d0f7551a39eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveRollForward_01a130e6-8e5e-7ac4-9583-7a0dd56fcd75" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserveRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a130e6-8e5e-7817-b160-c82fd2d3664f" xlink:to="loc_us-gaap_RestructuringReserveRollForward_01a130e6-8e5e-7ac4-9583-7a0dd56fcd75" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_01a130e6-8e5e-7140-89c5-7791b6545b87" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_01a130e6-8e5e-7ac4-9583-7a0dd56fcd75" xlink:to="loc_us-gaap_RestructuringReserve_01a130e6-8e5e-7140-89c5-7791b6545b87" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRestructuring_01a130e6-8e5e-72dc-b3ae-51ebcdee16e3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForRestructuring"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_01a130e6-8e5e-7ac4-9583-7a0dd56fcd75" xlink:to="loc_us-gaap_PaymentsForRestructuring_01a130e6-8e5e-72dc-b3ae-51ebcdee16e3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveSettledWithoutCash2_01a130e6-8e5e-7420-85b8-64b303e1e1d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserveSettledWithoutCash2"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_01a130e6-8e5e-7ac4-9583-7a0dd56fcd75" xlink:to="loc_us-gaap_RestructuringReserveSettledWithoutCash2_01a130e6-8e5e-7420-85b8-64b303e1e1d7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_01a130e6-8e5e-7962-a1cf-5160c366f11b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserve"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_01a130e6-8e5e-7cfb-81fc-dfbf11a37aae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a130e6-8e5e-7817-b160-c82fd2d3664f" xlink:to="loc_us-gaap_RestructuringCharges_01a130e6-8e5e-7cfb-81fc-dfbf11a37aae" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_01a130e6-8e5e-7ced-8a42-56a241424f38" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringAndRelatedCostExpectedCost1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a130e6-8e5e-7817-b160-c82fd2d3664f" xlink:to="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_01a130e6-8e5e-7ced-8a42-56a241424f38" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/SubsequentEventsDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#SubsequentEventsDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/SubsequentEventsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_01a130e6-8e5e-7ee1-9399-194aa7ce4aee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_01a130e6-8e5e-7d3a-8638-658a0bee0987" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a130e6-8e5e-7ee1-9399-194aa7ce4aee" xlink:to="loc_us-gaap_SubsequentEventTable_01a130e6-8e5e-7d3a-8638-658a0bee0987" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_01a130e6-8e5e-7a80-bbfe-86ea2894a455" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_01a130e6-8e5e-7d3a-8638-658a0bee0987" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_01a130e6-8e5e-7a80-bbfe-86ea2894a455" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_01a130e6-8e5e-7a80-bbfe-86ea2894a455_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_01a130e6-8e5e-7a80-bbfe-86ea2894a455" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_01a130e6-8e5e-7a80-bbfe-86ea2894a455_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_01a130e6-8e5e-78f7-a107-07675ec17abe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_01a130e6-8e5e-7a80-bbfe-86ea2894a455" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_01a130e6-8e5e-78f7-a107-07675ec17abe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_01a130e6-8e5e-7558-b39f-f23e4d66ddf4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_01a130e6-8e5e-78f7-a107-07675ec17abe" xlink:to="loc_us-gaap_SubsequentEventMember_01a130e6-8e5e-7558-b39f-f23e4d66ddf4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_01a130e6-8e5e-7138-af90-71976899fe39" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_01a130e6-8e5e-7d3a-8638-658a0bee0987" xlink:to="loc_us-gaap_CreditFacilityAxis_01a130e6-8e5e-7138-af90-71976899fe39" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a130e6-8e5e-7138-af90-71976899fe39_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_01a130e6-8e5e-7138-af90-71976899fe39" xlink:to="loc_us-gaap_CreditFacilityDomain_01a130e6-8e5e-7138-af90-71976899fe39_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a130e6-8e5e-77c5-8761-c42d95ebdce7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_01a130e6-8e5e-7138-af90-71976899fe39" xlink:to="loc_us-gaap_CreditFacilityDomain_01a130e6-8e5e-77c5-8761-c42d95ebdce7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_A2026WoodmanPurchaseAgreementMember_01a130e6-8e5e-789e-8b16-2b4626d46fb3" xlink:href="gpro-20260630.xsd#gpro_A2026WoodmanPurchaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a130e6-8e5e-77c5-8761-c42d95ebdce7" xlink:to="loc_gpro_A2026WoodmanPurchaseAgreementMember_01a130e6-8e5e-789e-8b16-2b4626d46fb3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ConvertibleDebenturesMember_01a130e6-8e5e-7d0a-8747-ef9bca8f53cc" xlink:href="gpro-20260630.xsd#gpro_ConvertibleDebenturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a130e6-8e5e-77c5-8761-c42d95ebdce7" xlink:to="loc_gpro_ConvertibleDebenturesMember_01a130e6-8e5e-7d0a-8747-ef9bca8f53cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConversionOfStockSharesConverted1_01a130e6-8e5e-76cd-bf4e-806580d587b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConversionOfStockSharesConverted1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a130e6-8e5e-7ee1-9399-194aa7ce4aee" xlink:to="loc_us-gaap_ConversionOfStockSharesConverted1_01a130e6-8e5e-76cd-bf4e-806580d587b3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtConversionConvertedInstrumentAmount1_01a130e6-8e5e-7153-93b9-235100d6418c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtConversionConvertedInstrumentAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a130e6-8e5e-7ee1-9399-194aa7ce4aee" xlink:to="loc_us-gaap_DebtConversionConvertedInstrumentAmount1_01a130e6-8e5e-7153-93b9-235100d6418c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightOutstanding_01a130e6-8e5e-7a66-a8e0-8b0cfe88061d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a130e6-8e5e-7ee1-9399-194aa7ce4aee" xlink:to="loc_us-gaap_ClassOfWarrantOrRightOutstanding_01a130e6-8e5e-7a66-a8e0-8b0cfe88061d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentIssuedPrincipal_01a130e6-8e5e-7869-8edb-7671d99029b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentIssuedPrincipal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a130e6-8e5e-7ee1-9399-194aa7ce4aee" xlink:to="loc_us-gaap_DebtInstrumentIssuedPrincipal_01a130e6-8e5e-7869-8edb-7671d99029b4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_01a130e6-8e5e-7d3f-9e41-a8e43ae4562c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a130e6-8e5e-7ee1-9399-194aa7ce4aee" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_01a130e6-8e5e-7d3f-9e41-a8e43ae4562c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_01a130e6-8e5e-7b74-8c3a-b2371759445a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a130e6-8e5e-7ee1-9399-194aa7ce4aee" xlink:to="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_01a130e6-8e5e-7b74-8c3a-b2371759445a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDebtNetOfIssuanceCosts_01a130e6-8e5e-78eb-852f-9bd0a2b6796b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromDebtNetOfIssuanceCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a130e6-8e5e-7ee1-9399-194aa7ce4aee" xlink:to="loc_us-gaap_ProceedsFromDebtNetOfIssuanceCosts_01a130e6-8e5e-78eb-852f-9bd0a2b6796b" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.gopro.com/role/AccountingChangesandErrorCorrectionsDetails" xlink:type="simple" xlink:href="gpro-20260630.xsd#AccountingChangesandErrorCorrectionsDetails"/>
  <link:definitionLink xlink:role="http://www.gopro.com/role/AccountingChangesandErrorCorrectionsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_01a13988-5728-7a25-9560-a6e22e865806" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_01a13988-5728-7a25-9560-a6e22e865806" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis_01a13988-5728-7f6e-b93c-56e4746bb354" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_01a13988-5728-7a25-9560-a6e22e865806" xlink:to="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis_01a13988-5728-7f6e-b93c-56e4746bb354" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsForErrorCorrectionDomain_01a13988-5728-7f6e-b93c-56e4746bb354_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsForErrorCorrectionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis_01a13988-5728-7f6e-b93c-56e4746bb354" xlink:to="loc_us-gaap_AdjustmentsForErrorCorrectionDomain_01a13988-5728-7f6e-b93c-56e4746bb354_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsForErrorCorrectionDomain_01a13988-5728-78bb-9b08-90470e5ad955" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsForErrorCorrectionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmountAxis_01a13988-5728-7f6e-b93c-56e4746bb354" xlink:to="loc_us-gaap_AdjustmentsForErrorCorrectionDomain_01a13988-5728-78bb-9b08-90470e5ad955" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementAxis_01a13988-5728-74a7-983a-5f3bca578ea5" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RestatementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_01a13988-5728-7a25-9560-a6e22e865806" xlink:to="loc_srt_RestatementAxis_01a13988-5728-74a7-983a-5f3bca578ea5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_01a13988-5728-74a7-983a-5f3bca578ea5_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RestatementAxis_01a13988-5728-74a7-983a-5f3bca578ea5" xlink:to="loc_srt_RestatementDomain_01a13988-5728-74a7-983a-5f3bca578ea5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_01a13988-5728-7a43-8126-0a11cff869f5" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RestatementAxis_01a13988-5728-74a7-983a-5f3bca578ea5" xlink:to="loc_srt_RestatementDomain_01a13988-5728-7a43-8126-0a11cff869f5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RevisionOfPriorPeriodErrorCorrectionAdjustmentMember_01a13988-a879-747a-ba9f-632e2565064a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RevisionOfPriorPeriodErrorCorrectionAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_01a13988-5728-7a43-8126-0a11cff869f5" xlink:to="loc_srt_RevisionOfPriorPeriodErrorCorrectionAdjustmentMember_01a13988-a879-747a-ba9f-632e2565064a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioPreviouslyReportedMember_01a13988-dafb-78c2-87d8-c17f3a86ebec" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScenarioPreviouslyReportedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_01a13988-5728-7a43-8126-0a11cff869f5" xlink:to="loc_srt_ScenarioPreviouslyReportedMember_01a13988-dafb-78c2-87d8-c17f3a86ebec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_01a1420c-5ce3-788b-bc69-51f092fe7f23" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_01a13988-5728-7a25-9560-a6e22e865806" xlink:to="loc_us-gaap_CreditFacilityAxis_01a1420c-5ce3-788b-bc69-51f092fe7f23" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a1420c-5ce3-788b-bc69-51f092fe7f23_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_01a1420c-5ce3-788b-bc69-51f092fe7f23" xlink:to="loc_us-gaap_CreditFacilityDomain_01a1420c-5ce3-788b-bc69-51f092fe7f23_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a1420c-5ce3-7a6a-8366-78d0d24eab34" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_01a1420c-5ce3-788b-bc69-51f092fe7f23" xlink:to="loc_us-gaap_CreditFacilityDomain_01a1420c-5ce3-7a6a-8366-78d0d24eab34" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_ConvertibleDebenturesMember_01a1420c-7cad-7799-a1ba-c2deb5eb730d" xlink:href="gpro-20260630.xsd#gpro_ConvertibleDebenturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a1420c-5ce3-7a6a-8366-78d0d24eab34" xlink:to="loc_gpro_ConvertibleDebenturesMember_01a1420c-7cad-7799-a1ba-c2deb5eb730d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_01a13988-5728-70b6-8af2-4d1141bf268e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_01a13988-5728-70b6-8af2-4d1141bf268e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermBorrowings_01a13988-f7cb-7257-b01f-685de8c442f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_ShortTermBorrowings_01a13988-f7cb-7257-b01f-685de8c442f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_01a13989-a026-779c-b8e7-2d0bfd6dd775" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_LiabilitiesCurrent_01a13989-a026-779c-b8e7-2d0bfd6dd775" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_01a1398a-3b25-7535-9478-ed2e19bfb55c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_01a1398a-3b25-7535-9478-ed2e19bfb55c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_01a1398a-c8fc-765e-aa6d-d9d7d0c03c96" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_Liabilities_01a1398a-c8fc-765e-aa6d-d9d7d0c03c96" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStocksIncludingAdditionalPaidInCapital_01a1398b-6520-7e8f-9158-3652c5ba1221" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStocksIncludingAdditionalPaidInCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_CommonStocksIncludingAdditionalPaidInCapital_01a1398b-6520-7e8f-9158-3652c5ba1221" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01a1398b-f60c-7ef9-85b7-4ac2ad953e3e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01a1398b-f60c-7ef9-85b7-4ac2ad953e3e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a1398c-7b30-7828-a5a0-e4819ca9a668" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_StockholdersEquity_01a1398c-7b30-7828-a5a0-e4819ca9a668" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRevenueExpenseNet_01a1398d-20e1-7258-b253-a7284fd46170" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRevenueExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_InterestRevenueExpenseNet_01a1398d-20e1-7258-b253-a7284fd46170" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_01a1398d-b147-74a4-9021-59b4920c8e30" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_01a1398d-b147-74a4-9021-59b4920c8e30" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_01a1398e-4be1-7187-b951-7328757624ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_01a1398e-4be1-7187-b951-7328757624ae" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a1398e-d3fe-78e3-8841-89857a47948a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a1398e-d3fe-78e3-8841-89857a47948a" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a1398f-614b-770e-9b42-9f139521e51d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_NetIncomeLoss_01a1398f-614b-770e-9b42-9f139521e51d" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_01a1398f-ee66-7a5f-a37e-016ee1c01a19" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_EarningsPerShareDiluted_01a1398f-ee66-7a5f-a37e-016ee1c01a19" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfDebtDiscountPremium_01a13994-9135-76d3-b62d-43f5ac152512" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfDebtDiscountPremium"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_AmortizationOfDebtDiscountPremium_01a13994-9135-76d3-b62d-43f5ac152512" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01a13995-2635-7e0d-9f28-d17c44ae077e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01a13995-2635-7e0d-9f28-d17c44ae077e" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_DerivativeExpense_01a13995-b1eb-7d59-b188-de45d035d77a" xlink:href="gpro-20260630.xsd#gpro_DerivativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_gpro_DerivativeExpense_01a13995-b1eb-7d59-b188-de45d035d77a" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_01a13996-43bc-77e5-bb92-f5a12cbae756" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_01a13996-43bc-77e5-bb92-f5a12cbae756" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_01a13996-d8ad-7e4e-9538-1756b17959ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherOperatingActivitiesCashFlowStatement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_01a13996-d8ad-7e4e-9538-1756b17959ca" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a13997-7398-7aaf-9603-2ed77bfaec44" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a13997-7398-7aaf-9603-2ed77bfaec44" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_01a14207-be4a-7f08-bd4e-a075ec003f7f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_01a14207-be4a-7f08-bd4e-a075ec003f7f" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_01a1420c-5ce3-746b-9739-09e89f8ba33c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_01a13988-5728-7317-b972-fae6b9b90a92" xlink:to="loc_us-gaap_DerivativeLiabilities_01a1420c-5ce3-746b-9739-09e89f8ba33c" xlink:type="arc" order="21"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/ecd/role/IndividualsOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#IndividualsOnly"/>
  <link:definitionLink xlink:role="http://xbrl.sec.gov/ecd/role/IndividualsOnly" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AllIndividualsMember" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd#ecd_AllIndividualsMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_gpro_DeanJahnkeMember_01a130e6-8c4c-704b-8fb7-dea455567a49" xlink:href="gpro-20260630.xsd#gpro_DeanJahnkeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ecd_AllIndividualsMember" xlink:to="loc_gpro_DeanJahnkeMember_01a130e6-8c4c-704b-8fb7-dea455567a49" xlink:type="arc" order="2"/>
  </link:definitionLink>
</link:linkbase>
