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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019dff0e-0e82-7537-bd3b-b27cbe2fe858,g:1f06faf7-53bf-46bf-862b-de94d9e5b50c-->
<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.huronconsultinggroup.com/role/Cover" xlink:type="simple" xlink:href="hurn-20260508.xsd#Cover"/>
  <link:definitionLink xlink:role="http://www.huronconsultinggroup.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_019e17f9-0dfa-7f82-821d-ed55b0a3a355" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_DocumentInformationTable_019e17f9-0dfa-7f82-821d-ed55b0a3a355" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationDocumentAxis_019e17f9-0dfa-7479-8166-9d5a0b5398f1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentInformationDocumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_019e17f9-0dfa-7f82-821d-ed55b0a3a355" xlink:to="loc_dei_DocumentInformationDocumentAxis_019e17f9-0dfa-7479-8166-9d5a0b5398f1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentDomain_019e17f9-0dfa-7479-8166-9d5a0b5398f1_default" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_DocumentInformationDocumentAxis_019e17f9-0dfa-7479-8166-9d5a0b5398f1" xlink:to="loc_dei_DocumentDomain_019e17f9-0dfa-7479-8166-9d5a0b5398f1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentDomain_019e17f9-0dfa-706d-a13d-a8fded80b223" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_DocumentInformationDocumentAxis_019e17f9-0dfa-7479-8166-9d5a0b5398f1" xlink:to="loc_dei_DocumentDomain_019e17f9-0dfa-706d-a13d-a8fded80b223" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019e17f9-0dfa-71da-966f-ebe183d7597b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_DocumentType_019e17f9-0dfa-71da-966f-ebe183d7597b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019e17f9-0dfa-7fe4-b867-250c302d0409" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_DocumentPeriodEndDate_019e17f9-0dfa-7fe4-b867-250c302d0409" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019e17f9-0dfa-7aed-9554-d2f1d3dceb41" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_EntityRegistrantName_019e17f9-0dfa-7aed-9554-d2f1d3dceb41" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019e17f9-0dfa-73da-8b0c-8451fd8d3768" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_EntityAddressAddressLine1_019e17f9-0dfa-73da-8b0c-8451fd8d3768" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019e17f9-0dfa-7acb-a989-8890ff4a2e6b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_EntityAddressCityOrTown_019e17f9-0dfa-7acb-a989-8890ff4a2e6b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019e17f9-0dfa-7d14-9ee6-c04d8b19f095" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_EntityAddressStateOrProvince_019e17f9-0dfa-7d14-9ee6-c04d8b19f095" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019e17f9-0dfa-7efb-b498-6a43cb262dea" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_EntityAddressPostalZipCode_019e17f9-0dfa-7efb-b498-6a43cb262dea" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019e17f9-0dfa-7d17-ad73-766579e2a472" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_CityAreaCode_019e17f9-0dfa-7d17-ad73-766579e2a472" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019e17f9-0dfa-7e41-8c83-023df6f2beaf" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_LocalPhoneNumber_019e17f9-0dfa-7e41-8c83-023df6f2beaf" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019e17f9-6481-7b97-b9a5-f05c6dff6014" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019e17f9-6481-7b97-b9a5-f05c6dff6014" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019e17f9-6481-7e59-a4ea-b79092e5d8a9" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_EntityFileNumber_019e17f9-6481-7e59-a4ea-b79092e5d8a9" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019e17f9-6481-7ee5-a679-a009e656ecbc" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_EntityTaxIdentificationNumber_019e17f9-6481-7ee5-a679-a009e656ecbc" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019e17f9-7d10-7fa0-9121-f2b6d33d044a" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_WrittenCommunications"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_WrittenCommunications_019e17f9-7d10-7fa0-9121-f2b6d33d044a" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019e17f9-7d10-7fb7-b7fe-ba1f8f8dc02f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SolicitingMaterial"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_SolicitingMaterial_019e17f9-7d10-7fb7-b7fe-ba1f8f8dc02f" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019e17f9-7d10-724f-a312-de74d17a9037" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_PreCommencementTenderOffer_019e17f9-7d10-724f-a312-de74d17a9037" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019e17f9-7d10-7d1e-887d-11e9f21582d0" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019e17f9-7d10-7d1e-887d-11e9f21582d0" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019e17f9-953c-74c9-9a58-0ab7178bf88b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_Security12bTitle_019e17f9-953c-74c9-9a58-0ab7178bf88b" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019e17f9-953c-7119-8b66-c2402dcb885c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_TradingSymbol_019e17f9-953c-7119-8b66-c2402dcb885c" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019e17f9-953c-7e96-9e28-7b777bcc58eb" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_SecurityExchangeName_019e17f9-953c-7e96-9e28-7b777bcc58eb" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019e17f9-a7e9-7137-ab2e-a4d725b0c79b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_EntityEmergingGrowthCompany_019e17f9-a7e9-7137-ab2e-a4d725b0c79b" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019e17f9-f9ab-79ed-a91c-bd872c2d20f3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_AmendmentFlag_019e17f9-f9ab-79ed-a91c-bd872c2d20f3" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019e17fa-0dde-7712-8bcc-d8cc72c63aac" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019e17f9-0dfa-7eb5-9769-8d88de1e821c" xlink:to="loc_dei_EntityCentralIndexKey_019e17fa-0dde-7712-8bcc-d8cc72c63aac" xlink:type="arc" order="21"/>
  </link:definitionLink>
</link:linkbase>
