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

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2023 Workiva-->
<!--r:99935ba2-fae6-4c7c-ac47-534a42897612,g:e32ca83a-84a1-4d53-8701-e9f6f8e49797-->
<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://groceryoutlet.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY" xlink:type="simple" xlink:href="go-20230401.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY"/>
  <link:definitionLink xlink:role="http://groceryoutlet.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY" xlink:type="extended" id="i05f0dc4473894366bad7d7d2e1cc16e7_CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_a6528669-d1d6-417b-b264-8d45838e4063" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9fdf807f-fdfc-4a29-880b-232291496d8b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_a6528669-d1d6-417b-b264-8d45838e4063" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9fdf807f-fdfc-4a29-880b-232291496d8b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_48493284-e907-411b-8ac5-b5ac4efc9e5c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9fdf807f-fdfc-4a29-880b-232291496d8b" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_48493284-e907-411b-8ac5-b5ac4efc9e5c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_6b6c50b5-2335-41e8-aaac-8eba014ce717" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9fdf807f-fdfc-4a29-880b-232291496d8b" xlink:to="loc_us-gaap_StockholdersEquity_6b6c50b5-2335-41e8-aaac-8eba014ce717" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_d5c30ab4-58af-47c4-853c-5d8919e7fd28" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9fdf807f-fdfc-4a29-880b-232291496d8b" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_d5c30ab4-58af-47c4-853c-5d8919e7fd28" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross_a8bc14f2-e059-465a-8779-155f76e00d25" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9fdf807f-fdfc-4a29-880b-232291496d8b" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross_a8bc14f2-e059-465a-8779-155f76e00d25" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_bc0af40e-27c4-4285-99bf-a46c9d6facf7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9fdf807f-fdfc-4a29-880b-232291496d8b" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_bc0af40e-27c4-4285-99bf-a46c9d6facf7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_06de59c4-742b-4726-84d3-43d1e8384182" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9fdf807f-fdfc-4a29-880b-232291496d8b" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_06de59c4-742b-4726-84d3-43d1e8384182" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_061805e3-cdab-45b8-a31c-01e88b932499" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9fdf807f-fdfc-4a29-880b-232291496d8b" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_061805e3-cdab-45b8-a31c-01e88b932499" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Dividends_0002d872-77d2-4c48-b36c-c25b3ebd852c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Dividends"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9fdf807f-fdfc-4a29-880b-232291496d8b" xlink:to="loc_us-gaap_Dividends_0002d872-77d2-4c48-b36c-c25b3ebd852c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_73636bd8-b0d4-4415-8cbe-b32a0185af98" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9fdf807f-fdfc-4a29-880b-232291496d8b" xlink:to="loc_us-gaap_NetIncomeLoss_73636bd8-b0d4-4415-8cbe-b32a0185af98" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_673b92ef-6e9d-455d-83ac-86e1297a1ab8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9fdf807f-fdfc-4a29-880b-232291496d8b" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_673b92ef-6e9d-455d-83ac-86e1297a1ab8" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_b789ea77-d6e3-4618-b71a-9eda04f97f93" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_6c94d7b9-0bdc-4572-b980-a41dd6f3246e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_12abf529-2d85-442c-81fe-93a88115876e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_a6528669-d1d6-417b-b264-8d45838e4063" xlink:to="loc_us-gaap_StatementTable_12abf529-2d85-442c-81fe-93a88115876e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_b9676f14-5e31-4532-80d8-231f629a8fff" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_12abf529-2d85-442c-81fe-93a88115876e" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_b9676f14-5e31-4532-80d8-231f629a8fff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_b9676f14-5e31-4532-80d8-231f629a8fff_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_b9676f14-5e31-4532-80d8-231f629a8fff" xlink:to="loc_us-gaap_EquityComponentDomain_b9676f14-5e31-4532-80d8-231f629a8fff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_1565f564-208b-470e-8540-6a2742f41733" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_b9676f14-5e31-4532-80d8-231f629a8fff" xlink:to="loc_us-gaap_EquityComponentDomain_1565f564-208b-470e-8540-6a2742f41733" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_5f765c00-31aa-4c75-83d4-60b7a93002f3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_1565f564-208b-470e-8540-6a2742f41733" xlink:to="loc_us-gaap_CommonStockMember_5f765c00-31aa-4c75-83d4-60b7a93002f3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_7dc76663-fa7e-40e2-9560-5dc3a6b03cc1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_1565f564-208b-470e-8540-6a2742f41733" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_7dc76663-fa7e-40e2-9560-5dc3a6b03cc1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_cf2c2122-e5e8-4f1e-9749-2c9274411baa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_1565f564-208b-470e-8540-6a2742f41733" xlink:to="loc_us-gaap_RetainedEarningsMember_cf2c2122-e5e8-4f1e-9749-2c9274411baa" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://groceryoutlet.com/role/OrganizationandSummaryofSignificantAccountingPoliciesNarrativeDetails" xlink:type="simple" xlink:href="go-20230401.xsd#OrganizationandSummaryofSignificantAccountingPoliciesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://groceryoutlet.com/role/OrganizationandSummaryofSignificantAccountingPoliciesNarrativeDetails" xlink:type="extended" id="i8b738465b32d4ebdbec06aab45da210a_OrganizationandSummaryofSignificantAccountingPoliciesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockLineItems_eb9e08ba-8fd9-477b-a3f0-ae085df14926" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsidiarySaleOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfStores_7d8ba837-46d9-47d1-8ffe-caaca6e55db7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NumberOfStores"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_eb9e08ba-8fd9-477b-a3f0-ae085df14926" xlink:to="loc_us-gaap_NumberOfStores_7d8ba837-46d9-47d1-8ffe-caaca6e55db7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_c4883650-b2fe-4d72-9138-79eebb299603" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NumberOfReportableSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_eb9e08ba-8fd9-477b-a3f0-ae085df14926" xlink:to="loc_us-gaap_NumberOfReportableSegments_c4883650-b2fe-4d72-9138-79eebb299603" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfOperatingSegments_c7d35edf-80b4-4b4c-a6a6-ac32ca3c6ac0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NumberOfOperatingSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_eb9e08ba-8fd9-477b-a3f0-ae085df14926" xlink:to="loc_us-gaap_NumberOfOperatingSegments_c7d35edf-80b4-4b4c-a6a6-ac32ca3c6ac0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_LesseeFinanceLeaseNumberOfLeases_d884272e-3395-4ba4-b571-f72e240748de" xlink:href="go-20230401.xsd#go_LesseeFinanceLeaseNumberOfLeases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_eb9e08ba-8fd9-477b-a3f0-ae085df14926" xlink:to="loc_go_LesseeFinanceLeaseNumberOfLeases_d884272e-3395-4ba4-b571-f72e240748de" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_GiftCardRedemptionPeriod_720eba26-3f72-4ca3-badc-e4d2d68e826e" xlink:href="go-20230401.xsd#go_GiftCardRedemptionPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_eb9e08ba-8fd9-477b-a3f0-ae085df14926" xlink:to="loc_go_GiftCardRedemptionPeriod_720eba26-3f72-4ca3-badc-e4d2d68e826e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_80503fb2-6a3d-4b04-bdd6-b1f8e2987207" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_eb9e08ba-8fd9-477b-a3f0-ae085df14926" xlink:to="loc_us-gaap_ContractWithCustomerLiability_80503fb2-6a3d-4b04-bdd6-b1f8e2987207" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_VariableInterestEntityNumberOfStores_d4dad814-873e-4e9d-ab16-31f9efc91b7b" xlink:href="go-20230401.xsd#go_VariableInterestEntityNumberOfStores"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_eb9e08ba-8fd9-477b-a3f0-ae085df14926" xlink:to="loc_go_VariableInterestEntityNumberOfStores_d4dad814-873e-4e9d-ab16-31f9efc91b7b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_6c4c1168-98b9-45a5-bc65-2576b50e7754" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_eb9e08ba-8fd9-477b-a3f0-ae085df14926" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_6c4c1168-98b9-45a5-bc65-2576b50e7754" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesCommissionsAndFees_005eeb78-0950-43d7-85cd-8dc3b834c401" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SalesCommissionsAndFees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_eb9e08ba-8fd9-477b-a3f0-ae085df14926" xlink:to="loc_us-gaap_SalesCommissionsAndFees_005eeb78-0950-43d7-85cd-8dc3b834c401" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesAndOtherLiabilities_eb447320-419b-483b-84d7-d3960e408a1f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccruedLiabilitiesAndOtherLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_eb9e08ba-8fd9-477b-a3f0-ae085df14926" xlink:to="loc_us-gaap_AccruedLiabilitiesAndOtherLiabilities_eb447320-419b-483b-84d7-d3960e408a1f" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_e5266a25-e315-44f1-9272-b6ef86c77832" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_eb9e08ba-8fd9-477b-a3f0-ae085df14926" xlink:to="loc_us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_e5266a25-e315-44f1-9272-b6ef86c77832" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable_55c4d9f9-1af3-457c-a75c-01d1ed8f20bb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_eb9e08ba-8fd9-477b-a3f0-ae085df14926" xlink:to="loc_us-gaap_SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable_55c4d9f9-1af3-457c-a75c-01d1ed8f20bb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_949cfd12-5a9f-4439-87bb-b76e7079af7e" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable_55c4d9f9-1af3-457c-a75c-01d1ed8f20bb" xlink:to="loc_srt_ConsolidatedEntitiesAxis_949cfd12-5a9f-4439-87bb-b76e7079af7e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_949cfd12-5a9f-4439-87bb-b76e7079af7e_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_949cfd12-5a9f-4439-87bb-b76e7079af7e" xlink:to="loc_srt_ConsolidatedEntitiesDomain_949cfd12-5a9f-4439-87bb-b76e7079af7e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_d48c13a5-c3eb-44aa-aac5-a2bdefea9557" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_949cfd12-5a9f-4439-87bb-b76e7079af7e" xlink:to="loc_srt_ConsolidatedEntitiesDomain_d48c13a5-c3eb-44aa-aac5-a2bdefea9557" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_d4d0d085-25b4-4e97-8c66-76d6bee4c0b5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_d48c13a5-c3eb-44aa-aac5-a2bdefea9557" xlink:to="loc_us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_d4d0d085-25b4-4e97-8c66-76d6bee4c0b5" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://groceryoutlet.com/role/OrganizationandSummaryofSignificantAccountingPoliciesScheduleofCarryingAmountandEstimatedFairValuesofFinancialLiabilitiesDetails" xlink:type="simple" xlink:href="go-20230401.xsd#OrganizationandSummaryofSignificantAccountingPoliciesScheduleofCarryingAmountandEstimatedFairValuesofFinancialLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://groceryoutlet.com/role/OrganizationandSummaryofSignificantAccountingPoliciesScheduleofCarryingAmountandEstimatedFairValuesofFinancialLiabilitiesDetails" xlink:type="extended" id="i3f4efc5defe34df9a0c5e48b5cb1eb5f_OrganizationandSummaryofSignificantAccountingPoliciesScheduleofCarryingAmountandEstimatedFairValuesofFinancialLiabilitiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_ac6512ca-bf2f-457c-b596-911bfe33ed2d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_5768775c-9ecf-4e54-a7d3-8b7a2f1a2269" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_ac6512ca-bf2f-457c-b596-911bfe33ed2d" xlink:to="loc_us-gaap_DebtInstrumentFairValue_5768775c-9ecf-4e54-a7d3-8b7a2f1a2269" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_1c3f35e2-1f79-477b-86dd-969889b0f072" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentUnamortizedDiscount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_ac6512ca-bf2f-457c-b596-911bfe33ed2d" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_1c3f35e2-1f79-477b-86dd-969889b0f072" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsGross_246a4191-0f8c-433f-a755-5ad7f348bda5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredFinanceCostsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_ac6512ca-bf2f-457c-b596-911bfe33ed2d" xlink:to="loc_us-gaap_DeferredFinanceCostsGross_246a4191-0f8c-433f-a755-5ad7f348bda5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_b40f85b2-18eb-491f-b2ce-40291da80e8e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_ac6512ca-bf2f-457c-b596-911bfe33ed2d" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_b40f85b2-18eb-491f-b2ce-40291da80e8e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_57a68c0c-d3fc-476e-a00e-9074ed5c0e00" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_b40f85b2-18eb-491f-b2ce-40291da80e8e" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_57a68c0c-d3fc-476e-a00e-9074ed5c0e00" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_57a68c0c-d3fc-476e-a00e-9074ed5c0e00_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_57a68c0c-d3fc-476e-a00e-9074ed5c0e00" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_57a68c0c-d3fc-476e-a00e-9074ed5c0e00_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_46127cac-ea1c-4b51-88ad-1f80d53ec138" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_57a68c0c-d3fc-476e-a00e-9074ed5c0e00" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_46127cac-ea1c-4b51-88ad-1f80d53ec138" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_c3af96b6-faa9-4c45-9025-2af7a794c958" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_46127cac-ea1c-4b51-88ad-1f80d53ec138" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_c3af96b6-faa9-4c45-9025-2af7a794c958" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_507b4061-59e4-4725-8b96-63f15db6728c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_b40f85b2-18eb-491f-b2ce-40291da80e8e" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_507b4061-59e4-4725-8b96-63f15db6728c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_507b4061-59e4-4725-8b96-63f15db6728c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_507b4061-59e4-4725-8b96-63f15db6728c" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_507b4061-59e4-4725-8b96-63f15db6728c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_725fdcad-e7a3-47fd-bb12-f5201a87ba5e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_507b4061-59e4-4725-8b96-63f15db6728c" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_725fdcad-e7a3-47fd-bb12-f5201a87ba5e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_0f57ebce-3bbc-4b43-8bec-c7a599f41379" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_725fdcad-e7a3-47fd-bb12-f5201a87ba5e" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_0f57ebce-3bbc-4b43-8bec-c7a599f41379" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_cda00f51-46c3-44e0-82a8-024c60274428" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_0f57ebce-3bbc-4b43-8bec-c7a599f41379" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_cda00f51-46c3-44e0-82a8-024c60274428" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_76e4d499-4204-4d9e-b645-c90acf365ac5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_0f57ebce-3bbc-4b43-8bec-c7a599f41379" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_76e4d499-4204-4d9e-b645-c90acf365ac5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_64a73af0-aef7-436f-818b-98d47751bae2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_b40f85b2-18eb-491f-b2ce-40291da80e8e" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_64a73af0-aef7-436f-818b-98d47751bae2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_64a73af0-aef7-436f-818b-98d47751bae2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_64a73af0-aef7-436f-818b-98d47751bae2" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_64a73af0-aef7-436f-818b-98d47751bae2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_5d1dbb9f-e2e8-468b-8e0a-56c1daa98840" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_64a73af0-aef7-436f-818b-98d47751bae2" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_5d1dbb9f-e2e8-468b-8e0a-56c1daa98840" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorLoansMember_22465211-979c-49f6-b42a-54b0f61d7d93" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SeniorLoansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_5d1dbb9f-e2e8-468b-8e0a-56c1daa98840" xlink:to="loc_us-gaap_SeniorLoansMember_22465211-979c-49f6-b42a-54b0f61d7d93" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_881da72f-74e0-4846-b35b-a2b117912865" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_b40f85b2-18eb-491f-b2ce-40291da80e8e" xlink:to="loc_us-gaap_CreditFacilityAxis_881da72f-74e0-4846-b35b-a2b117912865" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_881da72f-74e0-4846-b35b-a2b117912865_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_881da72f-74e0-4846-b35b-a2b117912865" xlink:to="loc_us-gaap_CreditFacilityDomain_881da72f-74e0-4846-b35b-a2b117912865_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_11b89005-8f65-4dd8-8cf2-58d99defe72c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_881da72f-74e0-4846-b35b-a2b117912865" xlink:to="loc_us-gaap_CreditFacilityDomain_11b89005-8f65-4dd8-8cf2-58d99defe72c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_f464ed45-e9dc-49ad-9174-c49543ba651e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_11b89005-8f65-4dd8-8cf2-58d99defe72c" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_f464ed45-e9dc-49ad-9174-c49543ba651e" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://groceryoutlet.com/role/OrganizationandSummaryofSignificantAccountingPoliciesScheduleofSalesRevenuebyProductDetails" xlink:type="simple" xlink:href="go-20230401.xsd#OrganizationandSummaryofSignificantAccountingPoliciesScheduleofSalesRevenuebyProductDetails"/>
  <link:definitionLink xlink:role="http://groceryoutlet.com/role/OrganizationandSummaryofSignificantAccountingPoliciesScheduleofSalesRevenuebyProductDetails" xlink:type="extended" id="ie6f67c541aae4767a58ef45b94b58f90_OrganizationandSummaryofSignificantAccountingPoliciesScheduleofSalesRevenuebyProductDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_f8cb4803-7e09-4495-939e-ebb859612657" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_71c90087-9198-43c6-a289-a127f4b8b447" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_f8cb4803-7e09-4495-939e-ebb859612657" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_71c90087-9198-43c6-a289-a127f4b8b447" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_6dacf35b-6020-435b-9185-9d7b0f28e712" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_f8cb4803-7e09-4495-939e-ebb859612657" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_6dacf35b-6020-435b-9185-9d7b0f28e712" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_7bb94a5d-5341-4a3d-82b0-84c057585ceb" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_6dacf35b-6020-435b-9185-9d7b0f28e712" xlink:to="loc_srt_ProductOrServiceAxis_7bb94a5d-5341-4a3d-82b0-84c057585ceb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_7bb94a5d-5341-4a3d-82b0-84c057585ceb_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_7bb94a5d-5341-4a3d-82b0-84c057585ceb" xlink:to="loc_srt_ProductsAndServicesDomain_7bb94a5d-5341-4a3d-82b0-84c057585ceb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_57628235-b1d8-4be8-a2bb-932208793319" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_7bb94a5d-5341-4a3d-82b0-84c057585ceb" xlink:to="loc_srt_ProductsAndServicesDomain_57628235-b1d8-4be8-a2bb-932208793319" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_PerishableMember_a5700c58-c009-4f30-bb0c-d0042f8d1bc0" xlink:href="go-20230401.xsd#go_PerishableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_57628235-b1d8-4be8-a2bb-932208793319" xlink:to="loc_go_PerishableMember_a5700c58-c009-4f30-bb0c-d0042f8d1bc0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_NonPerishableMember_d719094c-ac45-4fac-9006-091024968de2" xlink:href="go-20230401.xsd#go_NonPerishableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_57628235-b1d8-4be8-a2bb-932208793319" xlink:to="loc_go_NonPerishableMember_d719094c-ac45-4fac-9006-091024968de2" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://groceryoutlet.com/role/IndependentOperatorNotesandIndependentOperatorReceivablesNarrativeDetails" xlink:type="simple" xlink:href="go-20230401.xsd#IndependentOperatorNotesandIndependentOperatorReceivablesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://groceryoutlet.com/role/IndependentOperatorNotesandIndependentOperatorReceivablesNarrativeDetails" xlink:type="extended" id="i442ea3b643f5446fb2bfba027a45ba28_IndependentOperatorNotesandIndependentOperatorReceivablesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_1785b93c-4e4f-46be-85b0-e95e6a878581" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_IndependentOperatorNotesStatedInterestRate_f6b01cda-fd59-48bc-a8d2-72853a4dfd5a" xlink:href="go-20230401.xsd#go_IndependentOperatorNotesStatedInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_1785b93c-4e4f-46be-85b0-e95e6a878581" xlink:to="loc_go_IndependentOperatorNotesStatedInterestRate_f6b01cda-fd59-48bc-a8d2-72853a4dfd5a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestReceivable_93270aff-9331-4bc2-98de-eb15a15d59a2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_1785b93c-4e4f-46be-85b0-e95e6a878581" xlink:to="loc_us-gaap_InterestReceivable_93270aff-9331-4bc2-98de-eb15a15d59a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_5dca43a7-2d52-4a99-8bb2-11a5aff3c870" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_1785b93c-4e4f-46be-85b0-e95e6a878581" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_5dca43a7-2d52-4a99-8bb2-11a5aff3c870" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_e60908e4-ac61-439c-bd91-c93c001af4b1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_1785b93c-4e4f-46be-85b0-e95e6a878581" xlink:to="loc_us-gaap_NotesReceivableNet_e60908e4-ac61-439c-bd91-c93c001af4b1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_IndependentOperatorNotesOutstandingPercentage_d6caab05-17d8-4df3-97b9-5bc6eeaffe3b" xlink:href="go-20230401.xsd#go_IndependentOperatorNotesOutstandingPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_1785b93c-4e4f-46be-85b0-e95e6a878581" xlink:to="loc_go_IndependentOperatorNotesOutstandingPercentage_d6caab05-17d8-4df3-97b9-5bc6eeaffe3b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_FinancingReceivableTransferredToFromTCAP_5f474359-5a9c-4b39-acbc-731b33c420e6" xlink:href="go-20230401.xsd#go_FinancingReceivableTransferredToFromTCAP"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_1785b93c-4e4f-46be-85b0-e95e6a878581" xlink:to="loc_go_FinancingReceivableTransferredToFromTCAP_5f474359-5a9c-4b39-acbc-731b33c420e6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_IndependentOperatorNotesWeightedAverageInterestRate_cefd6628-7da2-48c1-b865-d144eed017fe" xlink:href="go-20230401.xsd#go_IndependentOperatorNotesWeightedAverageInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_1785b93c-4e4f-46be-85b0-e95e6a878581" xlink:to="loc_go_IndependentOperatorNotesWeightedAverageInterestRate_cefd6628-7da2-48c1-b865-d144eed017fe" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_7d881e34-89ec-4aea-86c1-fa13532f0d00" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_1785b93c-4e4f-46be-85b0-e95e6a878581" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_7d881e34-89ec-4aea-86c1-fa13532f0d00" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_2cedb797-3635-46e3-9eed-1f00e80f18ba" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_7d881e34-89ec-4aea-86c1-fa13532f0d00" xlink:to="loc_srt_RangeAxis_2cedb797-3635-46e3-9eed-1f00e80f18ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_2cedb797-3635-46e3-9eed-1f00e80f18ba_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_2cedb797-3635-46e3-9eed-1f00e80f18ba" xlink:to="loc_srt_RangeMember_2cedb797-3635-46e3-9eed-1f00e80f18ba_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_3b7792e0-2ba6-423d-9075-227d043f639a" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_2cedb797-3635-46e3-9eed-1f00e80f18ba" xlink:to="loc_srt_RangeMember_3b7792e0-2ba6-423d-9075-227d043f639a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_df466012-e8f9-4a61-838e-69dd3acc7083" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_3b7792e0-2ba6-423d-9075-227d043f639a" xlink:to="loc_srt_MinimumMember_df466012-e8f9-4a61-838e-69dd3acc7083" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_9120bce9-f3be-4709-9f67-f56bf5120f0e" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_3b7792e0-2ba6-423d-9075-227d043f639a" xlink:to="loc_srt_MaximumMember_9120bce9-f3be-4709-9f67-f56bf5120f0e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentAxis_448be04d-5bec-4a8a-802a-aac5ac021d2a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InternalCreditAssessmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_7d881e34-89ec-4aea-86c1-fa13532f0d00" xlink:to="loc_us-gaap_InternalCreditAssessmentAxis_448be04d-5bec-4a8a-802a-aac5ac021d2a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain_448be04d-5bec-4a8a-802a-aac5ac021d2a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InternalCreditAssessmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis_448be04d-5bec-4a8a-802a-aac5ac021d2a" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain_448be04d-5bec-4a8a-802a-aac5ac021d2a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain_9bb5257f-2892-4a2f-a9d3-3f4a5a62ce55" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InternalCreditAssessmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis_448be04d-5bec-4a8a-802a-aac5ac021d2a" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain_9bb5257f-2892-4a2f-a9d3-3f4a5a62ce55" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_TemporaryCommissionAdjustmentProgramMember_6d03bca1-2ba6-4f84-b171-e66803201b7b" xlink:href="go-20230401.xsd#go_TemporaryCommissionAdjustmentProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_9bb5257f-2892-4a2f-a9d3-3f4a5a62ce55" xlink:to="loc_go_TemporaryCommissionAdjustmentProgramMember_6d03bca1-2ba6-4f84-b171-e66803201b7b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_NonTemporaryCommissionAdjustmentProgramMember_432aa1f9-0b14-4080-b9c4-d380569e2d1b" xlink:href="go-20230401.xsd#go_NonTemporaryCommissionAdjustmentProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_9bb5257f-2892-4a2f-a9d3-3f4a5a62ce55" xlink:to="loc_go_NonTemporaryCommissionAdjustmentProgramMember_432aa1f9-0b14-4080-b9c4-d380569e2d1b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_NonTCAPMember_f249aa3b-f528-4772-a723-95cfcf4292dd" xlink:href="go-20230401.xsd#go_NonTCAPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_9bb5257f-2892-4a2f-a9d3-3f4a5a62ce55" xlink:to="loc_go_NonTCAPMember_f249aa3b-f528-4772-a723-95cfcf4292dd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_9b78ff9d-d381-43f5-9c6c-46276a5c6083" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablesPeriodPastDueAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_7d881e34-89ec-4aea-86c1-fa13532f0d00" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_9b78ff9d-d381-43f5-9c6c-46276a5c6083" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_9b78ff9d-d381-43f5-9c6c-46276a5c6083_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_9b78ff9d-d381-43f5-9c6c-46276a5c6083" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_9b78ff9d-d381-43f5-9c6c-46276a5c6083_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_825af82f-b36d-4aee-8cb0-3d51c9e77878" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivablesPeriodPastDueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueAxis_9b78ff9d-d381-43f5-9c6c-46276a5c6083" xlink:to="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_825af82f-b36d-4aee-8cb0-3d51c9e77878" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialAssetPastDueMember_633a475a-4cfc-4146-822e-cf4811f9517a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancialAssetPastDueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivablesPeriodPastDueDomain_825af82f-b36d-4aee-8cb0-3d51c9e77878" xlink:to="loc_us-gaap_FinancialAssetPastDueMember_633a475a-4cfc-4146-822e-cf4811f9517a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://groceryoutlet.com/role/IndependentOperatorNotesandIndependentOperatorReceivablesScheduleofIndependentOperatorNotesbyCreditQualityIndicatorsandYearofOriginationDetails" xlink:type="simple" xlink:href="go-20230401.xsd#IndependentOperatorNotesandIndependentOperatorReceivablesScheduleofIndependentOperatorNotesbyCreditQualityIndicatorsandYearofOriginationDetails"/>
  <link:definitionLink xlink:role="http://groceryoutlet.com/role/IndependentOperatorNotesandIndependentOperatorReceivablesScheduleofIndependentOperatorNotesbyCreditQualityIndicatorsandYearofOriginationDetails" xlink:type="extended" id="ie7d6d568a6c24add8c5ce22b7c4d2e01_IndependentOperatorNotesandIndependentOperatorReceivablesScheduleofIndependentOperatorNotesbyCreditQualityIndicatorsandYearofOriginationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_a49e32d7-1734-41ed-9972-0cfd22bf8eb6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableRecordedInvestmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_fa072186-b296-42e0-8298-dbcd9ae4f417" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_a49e32d7-1734-41ed-9972-0cfd22bf8eb6" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_fa072186-b296-42e0-8298-dbcd9ae4f417" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_f6b224db-91d6-4d7b-92bf-7b36d879d464" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_a49e32d7-1734-41ed-9972-0cfd22bf8eb6" xlink:to="loc_us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_f6b224db-91d6-4d7b-92bf-7b36d879d464" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_06b97fae-958c-477d-9faa-a1fb9c1577ed" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_a49e32d7-1734-41ed-9972-0cfd22bf8eb6" xlink:to="loc_us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_06b97fae-958c-477d-9faa-a1fb9c1577ed" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_3992d97d-bf91-4b9e-b96c-742d346f0402" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_a49e32d7-1734-41ed-9972-0cfd22bf8eb6" xlink:to="loc_us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_3992d97d-bf91-4b9e-b96c-742d346f0402" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_ef63a223-a0f4-4fb6-b704-3fbd48f846dc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_a49e32d7-1734-41ed-9972-0cfd22bf8eb6" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_ef63a223-a0f4-4fb6-b704-3fbd48f846dc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_6e223fe9-42ec-498b-a4c8-0daf5ddb2607" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_a49e32d7-1734-41ed-9972-0cfd22bf8eb6" xlink:to="loc_us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_6e223fe9-42ec-498b-a4c8-0daf5ddb2607" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_9632bf30-e9b9-4e8b-9e7c-6bbfdecd90e8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NotesReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_a49e32d7-1734-41ed-9972-0cfd22bf8eb6" xlink:to="loc_us-gaap_NotesReceivableGross_9632bf30-e9b9-4e8b-9e7c-6bbfdecd90e8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_811f9f8f-5887-44a5-aab6-045a062ff586" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_a49e32d7-1734-41ed-9972-0cfd22bf8eb6" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_811f9f8f-5887-44a5-aab6-045a062ff586" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentAxis_3d735448-b21c-43bf-a11c-4c28937b4969" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InternalCreditAssessmentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_811f9f8f-5887-44a5-aab6-045a062ff586" xlink:to="loc_us-gaap_InternalCreditAssessmentAxis_3d735448-b21c-43bf-a11c-4c28937b4969" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain_3d735448-b21c-43bf-a11c-4c28937b4969_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InternalCreditAssessmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis_3d735448-b21c-43bf-a11c-4c28937b4969" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain_3d735448-b21c-43bf-a11c-4c28937b4969_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InternalCreditAssessmentDomain_e6c38e19-552a-4403-9151-509dc572df3b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InternalCreditAssessmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InternalCreditAssessmentAxis_3d735448-b21c-43bf-a11c-4c28937b4969" xlink:to="loc_us-gaap_InternalCreditAssessmentDomain_e6c38e19-552a-4403-9151-509dc572df3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_TemporaryCommissionAdjustmentProgramMember_cb30f707-208b-4795-bc50-be935aea9c85" xlink:href="go-20230401.xsd#go_TemporaryCommissionAdjustmentProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_e6c38e19-552a-4403-9151-509dc572df3b" xlink:to="loc_go_TemporaryCommissionAdjustmentProgramMember_cb30f707-208b-4795-bc50-be935aea9c85" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_NonTemporaryCommissionAdjustmentProgramMember_d7cb5825-ffcc-4294-827c-1d10d0be3b37" xlink:href="go-20230401.xsd#go_NonTemporaryCommissionAdjustmentProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_e6c38e19-552a-4403-9151-509dc572df3b" xlink:to="loc_go_NonTemporaryCommissionAdjustmentProgramMember_d7cb5825-ffcc-4294-827c-1d10d0be3b37" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_NewStoreMember_3a625035-6268-4e06-aebb-1af79bb081ad" xlink:href="go-20230401.xsd#go_NewStoreMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InternalCreditAssessmentDomain_e6c38e19-552a-4403-9151-509dc572df3b" xlink:to="loc_go_NewStoreMember_3a625035-6268-4e06-aebb-1af79bb081ad" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://groceryoutlet.com/role/LongtermDebtScheduleofLongtermDebtDetails" xlink:type="simple" xlink:href="go-20230401.xsd#LongtermDebtScheduleofLongtermDebtDetails"/>
  <link:definitionLink xlink:role="http://groceryoutlet.com/role/LongtermDebtScheduleofLongtermDebtDetails" xlink:type="extended" id="i8f1d17931f6f4598bf1ae5cdd304f10c_LongtermDebtScheduleofLongtermDebtDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_22206c6f-414a-437d-9d4a-16f74dc552c0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_c4372cc7-3927-4392-b12a-ad08770014cf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_22206c6f-414a-437d-9d4a-16f74dc552c0" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_c4372cc7-3927-4392-b12a-ad08770014cf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_0ba87db9-1609-4e66-8c0d-54534650aaef" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_22206c6f-414a-437d-9d4a-16f74dc552c0" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_0ba87db9-1609-4e66-8c0d-54534650aaef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_ae5fb037-3e0c-49cb-8c28-e08acdc69f10" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_22206c6f-414a-437d-9d4a-16f74dc552c0" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_ae5fb037-3e0c-49cb-8c28-e08acdc69f10" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_ddee12ab-ba05-4153-a7eb-8f1d4c43c843" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_22206c6f-414a-437d-9d4a-16f74dc552c0" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_ddee12ab-ba05-4153-a7eb-8f1d4c43c843" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_3d2cf51e-b1cf-4c11-a218-a5d79f6fb2f1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_22206c6f-414a-437d-9d4a-16f74dc552c0" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_3d2cf51e-b1cf-4c11-a218-a5d79f6fb2f1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_d00b549f-e405-423a-8bd6-f32aab3fd8ac" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_22206c6f-414a-437d-9d4a-16f74dc552c0" xlink:to="loc_us-gaap_DebtInstrumentTable_d00b549f-e405-423a-8bd6-f32aab3fd8ac" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_5866d6da-dd1a-4e79-8772-535376e40948" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_d00b549f-e405-423a-8bd6-f32aab3fd8ac" xlink:to="loc_us-gaap_DebtInstrumentAxis_5866d6da-dd1a-4e79-8772-535376e40948" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_5866d6da-dd1a-4e79-8772-535376e40948_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_5866d6da-dd1a-4e79-8772-535376e40948" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_5866d6da-dd1a-4e79-8772-535376e40948_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_68553bf6-6121-4037-93a5-d4b0bf40b8a6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_5866d6da-dd1a-4e79-8772-535376e40948" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_68553bf6-6121-4037-93a5-d4b0bf40b8a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_SeniorTermLoanDue2025Member_e6889719-0355-423f-84bd-f1ebc4af4749" xlink:href="go-20230401.xsd#go_SeniorTermLoanDue2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_68553bf6-6121-4037-93a5-d4b0bf40b8a6" xlink:to="loc_go_SeniorTermLoanDue2025Member_e6889719-0355-423f-84bd-f1ebc4af4749" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_SeniorTermLoanDue2028Member_353d46e8-9255-4bbf-aaef-6aad8757c827" xlink:href="go-20230401.xsd#go_SeniorTermLoanDue2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_68553bf6-6121-4037-93a5-d4b0bf40b8a6" xlink:to="loc_go_SeniorTermLoanDue2028Member_353d46e8-9255-4bbf-aaef-6aad8757c827" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_d194dc76-bd1f-401b-885d-fefbdad643ac" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_d00b549f-e405-423a-8bd6-f32aab3fd8ac" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_d194dc76-bd1f-401b-885d-fefbdad643ac" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_d194dc76-bd1f-401b-885d-fefbdad643ac_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_d194dc76-bd1f-401b-885d-fefbdad643ac" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_d194dc76-bd1f-401b-885d-fefbdad643ac_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_9977b014-b957-46da-b534-f9a521ca6ff5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_d194dc76-bd1f-401b-885d-fefbdad643ac" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_9977b014-b957-46da-b534-f9a521ca6ff5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_bf60763d-1d5d-433a-bd68-fd589d7872f8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_9977b014-b957-46da-b534-f9a521ca6ff5" xlink:to="loc_us-gaap_SeniorNotesMember_bf60763d-1d5d-433a-bd68-fd589d7872f8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_d21734b4-0bb3-49db-9deb-cb3ecbf046b9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_9977b014-b957-46da-b534-f9a521ca6ff5" xlink:to="loc_us-gaap_LineOfCreditMember_d21734b4-0bb3-49db-9deb-cb3ecbf046b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_903ae9df-020d-400d-be1a-c12dfc333f67" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_d00b549f-e405-423a-8bd6-f32aab3fd8ac" xlink:to="loc_us-gaap_CreditFacilityAxis_903ae9df-020d-400d-be1a-c12dfc333f67" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_903ae9df-020d-400d-be1a-c12dfc333f67_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_903ae9df-020d-400d-be1a-c12dfc333f67" xlink:to="loc_us-gaap_CreditFacilityDomain_903ae9df-020d-400d-be1a-c12dfc333f67_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_0b20e375-369f-446b-b593-c3f26d860366" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_903ae9df-020d-400d-be1a-c12dfc333f67" xlink:to="loc_us-gaap_CreditFacilityDomain_0b20e375-369f-446b-b593-c3f26d860366" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_eeed88f8-6819-47de-8d69-200d5171769c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_0b20e375-369f-446b-b593-c3f26d860366" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_eeed88f8-6819-47de-8d69-200d5171769c" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://groceryoutlet.com/role/LongtermDebtNarrativeDetails" xlink:type="simple" xlink:href="go-20230401.xsd#LongtermDebtNarrativeDetails"/>
  <link:definitionLink xlink:role="http://groceryoutlet.com/role/LongtermDebtNarrativeDetails" xlink:type="extended" id="i04cff2bab061445e9e13cab3561ccdde_LongtermDebtNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_3b55bd93-e7ad-43bf-888d-e06752c2c0c7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_3b55bd93-e7ad-43bf-888d-e06752c2c0c7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_7a83bde4-6214-4d96-a60e-67ac4ecac076" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_7a83bde4-6214-4d96-a60e-67ac4ecac076" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_414ef750-b2d1-4df2-b029-9f229780f111" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_us-gaap_LineOfCredit_414ef750-b2d1-4df2-b029-9f229780f111" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_DebtModificationCosts_a89061ae-3bb6-44c6-ad9f-d7f8391e7fdc" xlink:href="go-20230401.xsd#go_DebtModificationCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_go_DebtModificationCosts_a89061ae-3bb6-44c6-ad9f-d7f8391e7fdc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_WriteOffOfDebtIssuanceCostsAndDebtDiscounts_d256af2d-9926-4561-8129-63ee39f80628" xlink:href="go-20230401.xsd#go_WriteOffOfDebtIssuanceCostsAndDebtDiscounts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_go_WriteOffOfDebtIssuanceCostsAndDebtDiscounts_d256af2d-9926-4561-8129-63ee39f80628" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsGross_bff0eaea-faaa-434a-92ba-93ffd57cb623" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredFinanceCostsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_us-gaap_DeferredFinanceCostsGross_bff0eaea-faaa-434a-92ba-93ffd57cb623" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_9d895efc-335e-43f2-88dc-1fb11aaba756" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_9d895efc-335e-43f2-88dc-1fb11aaba756" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_DebtCovenantMaximumPrincipalAmountForIncrementalFacilities_292c7eca-9536-459f-a007-926ce2866c47" xlink:href="go-20230401.xsd#go_DebtCovenantMaximumPrincipalAmountForIncrementalFacilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_go_DebtCovenantMaximumPrincipalAmountForIncrementalFacilities_292c7eca-9536-459f-a007-926ce2866c47" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_DebtCovenantMaximumPercentOfConsolidatedEBITDAForIncrementalFacilities_71b1daaa-b046-4f0a-94a6-ce22a6162a0f" xlink:href="go-20230401.xsd#go_DebtCovenantMaximumPercentOfConsolidatedEBITDAForIncrementalFacilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_go_DebtCovenantMaximumPercentOfConsolidatedEBITDAForIncrementalFacilities_71b1daaa-b046-4f0a-94a6-ce22a6162a0f" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_DebtInstrumentLeverageRatio_24a9887a-0d77-47e4-a1d9-21ad74f6a404" xlink:href="go-20230401.xsd#go_DebtInstrumentLeverageRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_go_DebtInstrumentLeverageRatio_24a9887a-0d77-47e4-a1d9-21ad74f6a404" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_d34a8217-b29e-443c-bc20-48d87676fa83" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_d34a8217-b29e-443c-bc20-48d87676fa83" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_e04c3d2f-52b8-45a5-857f-b2d5770d073f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_e04c3d2f-52b8-45a5-857f-b2d5770d073f" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_5fff8a63-3240-4b18-bd94-af2b5a0956af" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LettersOfCreditOutstandingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_5fff8a63-3240-4b18-bd94-af2b5a0956af" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_3106a94e-c1f0-43fb-b0c1-f84be2a50597" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_3106a94e-c1f0-43fb-b0c1-f84be2a50597" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_c551ff11-ce00-4fc1-8ee7-db19b05b8088" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_c551ff11-ce00-4fc1-8ee7-db19b05b8088" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfSeniorDebt_70a427e0-9938-47ee-9b43-013b6f24ded8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RepaymentsOfSeniorDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_us-gaap_RepaymentsOfSeniorDebt_70a427e0-9938-47ee-9b43-013b6f24ded8" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_DebtInstrumentInterestCoverageRatio_6afdda72-982e-4ff2-874e-3a680b00afed" xlink:href="go-20230401.xsd#go_DebtInstrumentInterestCoverageRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_go_DebtInstrumentInterestCoverageRatio_6afdda72-982e-4ff2-874e-3a680b00afed" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_bc684c58-9af1-4f9e-a5eb-63234975c1b4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_de5cf991-343c-4519-b83b-2000d91e54b1" xlink:to="loc_us-gaap_DebtInstrumentTable_bc684c58-9af1-4f9e-a5eb-63234975c1b4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_a7c588cb-520f-4f49-a4d5-0db3483cf753" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_bc684c58-9af1-4f9e-a5eb-63234975c1b4" xlink:to="loc_us-gaap_CreditFacilityAxis_a7c588cb-520f-4f49-a4d5-0db3483cf753" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_a7c588cb-520f-4f49-a4d5-0db3483cf753_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_a7c588cb-520f-4f49-a4d5-0db3483cf753" xlink:to="loc_us-gaap_CreditFacilityDomain_a7c588cb-520f-4f49-a4d5-0db3483cf753_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_0e0c0cec-0513-42a5-b108-10e3235b4602" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_a7c588cb-520f-4f49-a4d5-0db3483cf753" xlink:to="loc_us-gaap_CreditFacilityDomain_0e0c0cec-0513-42a5-b108-10e3235b4602" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_TermLoanFacilityMember_a692e2c1-912c-41b0-8df6-7ea31ebbf58b" xlink:href="go-20230401.xsd#go_TermLoanFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_0e0c0cec-0513-42a5-b108-10e3235b4602" xlink:to="loc_go_TermLoanFacilityMember_a692e2c1-912c-41b0-8df6-7ea31ebbf58b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_76100d65-7b12-4d3a-8ca4-ee06eff099d2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_0e0c0cec-0513-42a5-b108-10e3235b4602" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_76100d65-7b12-4d3a-8ca4-ee06eff099d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_3db2bff4-7447-4bb3-9da1-3f1fbe6c1e4b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LetterOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_0e0c0cec-0513-42a5-b108-10e3235b4602" xlink:to="loc_us-gaap_LetterOfCreditMember_3db2bff4-7447-4bb3-9da1-3f1fbe6c1e4b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BridgeLoanMember_48425a2b-dcde-43a5-a34a-1b4c6f91a9fe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BridgeLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_0e0c0cec-0513-42a5-b108-10e3235b4602" xlink:to="loc_us-gaap_BridgeLoanMember_48425a2b-dcde-43a5-a34a-1b4c6f91a9fe" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StandbyLettersOfCreditMember_0187aa09-f22c-4b29-9d17-846a79229aba" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StandbyLettersOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_0e0c0cec-0513-42a5-b108-10e3235b4602" xlink:to="loc_us-gaap_StandbyLettersOfCreditMember_0187aa09-f22c-4b29-9d17-846a79229aba" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_978da25e-15d6-4adb-851a-ac0fb696189c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_bc684c58-9af1-4f9e-a5eb-63234975c1b4" xlink:to="loc_us-gaap_DebtInstrumentAxis_978da25e-15d6-4adb-851a-ac0fb696189c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_978da25e-15d6-4adb-851a-ac0fb696189c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_978da25e-15d6-4adb-851a-ac0fb696189c" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_978da25e-15d6-4adb-851a-ac0fb696189c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_495fb899-b2e9-4c17-bd6d-4ad2ab129b7c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_978da25e-15d6-4adb-851a-ac0fb696189c" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_495fb899-b2e9-4c17-bd6d-4ad2ab129b7c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_CreditAgreementMember_81b4db18-f842-4a8e-8b00-7d09d6fc7cad" xlink:href="go-20230401.xsd#go_CreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_495fb899-b2e9-4c17-bd6d-4ad2ab129b7c" xlink:to="loc_go_CreditAgreementMember_81b4db18-f842-4a8e-8b00-7d09d6fc7cad" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_SeniorTermLoanDue2028Member_4b55872e-1218-4712-9566-53d981b25d57" xlink:href="go-20230401.xsd#go_SeniorTermLoanDue2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_495fb899-b2e9-4c17-bd6d-4ad2ab129b7c" xlink:to="loc_go_SeniorTermLoanDue2028Member_4b55872e-1218-4712-9566-53d981b25d57" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_FirstLienCreditAgreementMember_22d12cef-277c-4cde-93ca-3eb1062296e1" xlink:href="go-20230401.xsd#go_FirstLienCreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_495fb899-b2e9-4c17-bd6d-4ad2ab129b7c" xlink:to="loc_go_FirstLienCreditAgreementMember_22d12cef-277c-4cde-93ca-3eb1062296e1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_2c6b7754-1549-47cf-ad5a-3fad460c9cfe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_bc684c58-9af1-4f9e-a5eb-63234975c1b4" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_2c6b7754-1549-47cf-ad5a-3fad460c9cfe" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_2c6b7754-1549-47cf-ad5a-3fad460c9cfe_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_2c6b7754-1549-47cf-ad5a-3fad460c9cfe" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_2c6b7754-1549-47cf-ad5a-3fad460c9cfe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_1c42a0ee-fa3a-410e-9770-df064e9e2e74" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_2c6b7754-1549-47cf-ad5a-3fad460c9cfe" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_1c42a0ee-fa3a-410e-9770-df064e9e2e74" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_e0297e7d-2439-4ebb-94eb-b924dfc9da7e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_1c42a0ee-fa3a-410e-9770-df064e9e2e74" xlink:to="loc_us-gaap_SeniorNotesMember_e0297e7d-2439-4ebb-94eb-b924dfc9da7e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_6756a688-d9e4-4d22-9d8e-666d170d4deb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_bc684c58-9af1-4f9e-a5eb-63234975c1b4" xlink:to="loc_us-gaap_VariableRateAxis_6756a688-d9e4-4d22-9d8e-666d170d4deb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_6756a688-d9e4-4d22-9d8e-666d170d4deb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_6756a688-d9e4-4d22-9d8e-666d170d4deb" xlink:to="loc_us-gaap_VariableRateDomain_6756a688-d9e4-4d22-9d8e-666d170d4deb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_d44c606d-ba9e-4b27-8bcc-5876942ed548" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_6756a688-d9e4-4d22-9d8e-666d170d4deb" xlink:to="loc_us-gaap_VariableRateDomain_d44c606d-ba9e-4b27-8bcc-5876942ed548" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalFundsEffectiveSwapRateMember_d466336b-63b5-461b-9f5f-34f2905ccf61" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FederalFundsEffectiveSwapRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_d44c606d-ba9e-4b27-8bcc-5876942ed548" xlink:to="loc_us-gaap_FederalFundsEffectiveSwapRateMember_d466336b-63b5-461b-9f5f-34f2905ccf61" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_SpecifiedTermSecuredOvernightFinancingRateSOFROvernightIndexSwapRateMember_936366a1-4752-4d84-81f4-fb3ddf777b0d" xlink:href="go-20230401.xsd#go_SpecifiedTermSecuredOvernightFinancingRateSOFROvernightIndexSwapRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_d44c606d-ba9e-4b27-8bcc-5876942ed548" xlink:to="loc_go_SpecifiedTermSecuredOvernightFinancingRateSOFROvernightIndexSwapRateMember_936366a1-4752-4d84-81f4-fb3ddf777b0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_OneThreeOrSixMonthInterestPeriodAdjustedTermSOFRMember_ce2ce12a-221b-437e-9232-554afe463412" xlink:href="go-20230401.xsd#go_OneThreeOrSixMonthInterestPeriodAdjustedTermSOFRMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_d44c606d-ba9e-4b27-8bcc-5876942ed548" xlink:to="loc_go_OneThreeOrSixMonthInterestPeriodAdjustedTermSOFRMember_ce2ce12a-221b-437e-9232-554afe463412" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_OneMonthInterestPeriodAdjustedTermSOFRMember_6f36f191-e6fa-440c-857f-fbe6cbcc3484" xlink:href="go-20230401.xsd#go_OneMonthInterestPeriodAdjustedTermSOFRMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_d44c606d-ba9e-4b27-8bcc-5876942ed548" xlink:to="loc_go_OneMonthInterestPeriodAdjustedTermSOFRMember_6f36f191-e6fa-440c-857f-fbe6cbcc3484" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EurodollarMember_8bfdda20-1efd-48e6-a06c-eff3e47c02c2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EurodollarMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_d44c606d-ba9e-4b27-8bcc-5876942ed548" xlink:to="loc_us-gaap_EurodollarMember_8bfdda20-1efd-48e6-a06c-eff3e47c02c2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BaseRateMember_ae7e62d4-6c98-45c6-9be1-cb4190919138" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BaseRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_d44c606d-ba9e-4b27-8bcc-5876942ed548" xlink:to="loc_us-gaap_BaseRateMember_ae7e62d4-6c98-45c6-9be1-cb4190919138" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_15afcae0-6db5-494e-bd28-f14271a490be" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_bc684c58-9af1-4f9e-a5eb-63234975c1b4" xlink:to="loc_srt_RangeAxis_15afcae0-6db5-494e-bd28-f14271a490be" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_15afcae0-6db5-494e-bd28-f14271a490be_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_15afcae0-6db5-494e-bd28-f14271a490be" xlink:to="loc_srt_RangeMember_15afcae0-6db5-494e-bd28-f14271a490be_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_b977fbf8-50a2-4be5-8d3d-8a10a32e2019" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_15afcae0-6db5-494e-bd28-f14271a490be" xlink:to="loc_srt_RangeMember_b977fbf8-50a2-4be5-8d3d-8a10a32e2019" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_0f520182-62d8-4c62-9fdf-e9c2e3aeca6f" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_b977fbf8-50a2-4be5-8d3d-8a10a32e2019" xlink:to="loc_srt_MinimumMember_0f520182-62d8-4c62-9fdf-e9c2e3aeca6f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_d2f6ed60-fc90-4413-96a9-3ca2149e97c9" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_b977fbf8-50a2-4be5-8d3d-8a10a32e2019" xlink:to="loc_srt_MaximumMember_d2f6ed60-fc90-4413-96a9-3ca2149e97c9" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://groceryoutlet.com/role/StockholdersEquityDetails" xlink:type="simple" xlink:href="go-20230401.xsd#StockholdersEquityDetails"/>
  <link:definitionLink xlink:role="http://groceryoutlet.com/role/StockholdersEquityDetails" xlink:type="extended" id="i695272c015204cac9f7d758a93d82fc9_StockholdersEquityDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockLineItems_98f20214-5158-4997-a9d5-7def61a7470b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsidiarySaleOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_c1c13d02-28ef-4758-aabc-f1b6eefb90ed" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_98f20214-5158-4997-a9d5-7def61a7470b" xlink:to="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_c1c13d02-28ef-4758-aabc-f1b6eefb90ed" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares_ab0c134a-066a-4d3e-a363-984af1f92090" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockRepurchasedDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_98f20214-5158-4997-a9d5-7def61a7470b" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares_ab0c134a-066a-4d3e-a363-984af1f92090" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue_e7220250-8ed1-42d2-a997-115c042efb95" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockRepurchasedDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_98f20214-5158-4997-a9d5-7def61a7470b" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_e7220250-8ed1-42d2-a997-115c042efb95" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockAcquiredAverageCostPerShare_6fa25cfc-915d-4409-a5cc-0986fc5d06f3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TreasuryStockAcquiredAverageCostPerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_98f20214-5158-4997-a9d5-7def61a7470b" xlink:to="loc_us-gaap_TreasuryStockAcquiredAverageCostPerShare_6fa25cfc-915d-4409-a5cc-0986fc5d06f3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_7c254502-e6a6-45a3-b7fe-7a03b11dedb9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_98f20214-5158-4997-a9d5-7def61a7470b" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_7c254502-e6a6-45a3-b7fe-7a03b11dedb9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable_c569e4ed-fdb2-4836-8950-6be06a4a01d4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_98f20214-5158-4997-a9d5-7def61a7470b" xlink:to="loc_us-gaap_SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable_c569e4ed-fdb2-4836-8950-6be06a4a01d4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_f161c562-6f4e-488e-a8d8-d01e32dce89f" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable_c569e4ed-fdb2-4836-8950-6be06a4a01d4" xlink:to="loc_srt_RangeAxis_f161c562-6f4e-488e-a8d8-d01e32dce89f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_f161c562-6f4e-488e-a8d8-d01e32dce89f_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_f161c562-6f4e-488e-a8d8-d01e32dce89f" xlink:to="loc_srt_RangeMember_f161c562-6f4e-488e-a8d8-d01e32dce89f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_83cfb708-b3f1-40e4-8ac8-fa9f32111d63" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_f161c562-6f4e-488e-a8d8-d01e32dce89f" xlink:to="loc_srt_RangeMember_83cfb708-b3f1-40e4-8ac8-fa9f32111d63" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_68cdcabc-9ebe-47a4-a0b2-66f7d858ab3e" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_83cfb708-b3f1-40e4-8ac8-fa9f32111d63" xlink:to="loc_srt_MaximumMember_68cdcabc-9ebe-47a4-a0b2-66f7d858ab3e" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://groceryoutlet.com/role/SharebasedAwardsScheduleofStockOptionActivityDetails" xlink:type="simple" xlink:href="go-20230401.xsd#SharebasedAwardsScheduleofStockOptionActivityDetails"/>
  <link:definitionLink xlink:role="http://groceryoutlet.com/role/SharebasedAwardsScheduleofStockOptionActivityDetails" xlink:type="extended" id="i128e7e09b3024db5b82f9b85e0892247_SharebasedAwardsScheduleofStockOptionActivityDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_95a4a90e-be3d-460c-a159-20aac15850fb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_346812e0-b8f6-4b4c-ab17-8133ba012c72" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_95a4a90e-be3d-460c-a159-20aac15850fb" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_346812e0-b8f6-4b4c-ab17-8133ba012c72" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares_051251f8-3b95-40e0-b8ef-9f1e9876f99e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_346812e0-b8f6-4b4c-ab17-8133ba012c72" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares_051251f8-3b95-40e0-b8ef-9f1e9876f99e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_4d03396c-7b9e-4f59-9f1c-b80b872ed462" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_346812e0-b8f6-4b4c-ab17-8133ba012c72" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_4d03396c-7b9e-4f59-9f1c-b80b872ed462" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares_c238cc76-725b-4665-b381-d39c5920a89e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_346812e0-b8f6-4b4c-ab17-8133ba012c72" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares_c238cc76-725b-4665-b381-d39c5920a89e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares_b87122fa-c11b-4e37-bb99-859626404c07" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber_78f8b4b0-3944-4b92-95b8-b1ebfd4db9b7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_95a4a90e-be3d-460c-a159-20aac15850fb" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber_78f8b4b0-3944-4b92-95b8-b1ebfd4db9b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_0ce0d69f-3d47-455b-8a1e-4b233375981f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_95a4a90e-be3d-460c-a159-20aac15850fb" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_0ce0d69f-3d47-455b-8a1e-4b233375981f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue_04f0c052-567b-4219-b2e2-589172a42712" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_0ce0d69f-3d47-455b-8a1e-4b233375981f" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue_04f0c052-567b-4219-b2e2-589172a42712" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_5cfbe8aa-8d1a-4a24-9d65-06123351a37d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_0ce0d69f-3d47-455b-8a1e-4b233375981f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_5cfbe8aa-8d1a-4a24-9d65-06123351a37d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue_2d223d6c-c4ae-4a1c-a646-b36b62e3ee58" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_0ce0d69f-3d47-455b-8a1e-4b233375981f" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue_2d223d6c-c4ae-4a1c-a646-b36b62e3ee58" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue_46228dfe-1ff0-44af-8832-347bea055dcd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice_bdf92c18-fafb-4709-bcd9-be69196b9807" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_95a4a90e-be3d-460c-a159-20aac15850fb" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice_bdf92c18-fafb-4709-bcd9-be69196b9807" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_021c3277-acaf-4091-b69f-143eb534ee79" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_95a4a90e-be3d-460c-a159-20aac15850fb" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_021c3277-acaf-4091-b69f-143eb534ee79" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_8b3941dd-b298-4117-b7a3-3de6e113d319" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_021c3277-acaf-4091-b69f-143eb534ee79" xlink:to="loc_us-gaap_AwardTypeAxis_8b3941dd-b298-4117-b7a3-3de6e113d319" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8b3941dd-b298-4117-b7a3-3de6e113d319_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_8b3941dd-b298-4117-b7a3-3de6e113d319" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8b3941dd-b298-4117-b7a3-3de6e113d319_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_183335ea-f357-4854-be5b-91eb9556d19b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_8b3941dd-b298-4117-b7a3-3de6e113d319" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_183335ea-f357-4854-be5b-91eb9556d19b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_ShareBasedPaymentArrangementTimeBasedOptionMember_c4279635-4633-4bcb-b74e-d78ce8f7adcd" xlink:href="go-20230401.xsd#go_ShareBasedPaymentArrangementTimeBasedOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_183335ea-f357-4854-be5b-91eb9556d19b" xlink:to="loc_go_ShareBasedPaymentArrangementTimeBasedOptionMember_c4279635-4633-4bcb-b74e-d78ce8f7adcd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_ShareBasedPaymentArrangementPerformanceBasedOptionMember_66388384-9d70-4094-96c1-e5cb0fe3f535" xlink:href="go-20230401.xsd#go_ShareBasedPaymentArrangementPerformanceBasedOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_183335ea-f357-4854-be5b-91eb9556d19b" xlink:to="loc_go_ShareBasedPaymentArrangementPerformanceBasedOptionMember_66388384-9d70-4094-96c1-e5cb0fe3f535" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://groceryoutlet.com/role/SharebasedAwardsScheduleofRSUandPSUActivityDetails" xlink:type="simple" xlink:href="go-20230401.xsd#SharebasedAwardsScheduleofRSUandPSUActivityDetails"/>
  <link:definitionLink xlink:role="http://groceryoutlet.com/role/SharebasedAwardsScheduleofRSUandPSUActivityDetails" xlink:type="extended" id="ica20b4fc225d4e98aef10b9660a7df3d_SharebasedAwardsScheduleofRSUandPSUActivityDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7935c2b7-b1e5-471e-b906-5f4146ecc743" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_840f2c36-ad1e-4b87-b638-2c7d74168828" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7935c2b7-b1e5-471e-b906-5f4146ecc743" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_840f2c36-ad1e-4b87-b638-2c7d74168828" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_9fbdb984-633b-4757-9941-74f5fd85ad0c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_840f2c36-ad1e-4b87-b638-2c7d74168828" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_9fbdb984-633b-4757-9941-74f5fd85ad0c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_0d1c7b0d-9d17-4092-8e65-b9f6a1d2c1cc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_840f2c36-ad1e-4b87-b638-2c7d74168828" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_0d1c7b0d-9d17-4092-8e65-b9f6a1d2c1cc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustment_fceafaba-d6ba-448a-b2e1-0c73441a4786" xlink:href="go-20230401.xsd#go_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_840f2c36-ad1e-4b87-b638-2c7d74168828" xlink:to="loc_go_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustment_fceafaba-d6ba-448a-b2e1-0c73441a4786" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_74436561-66b1-4dc8-865c-869d12581ad8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_840f2c36-ad1e-4b87-b638-2c7d74168828" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_74436561-66b1-4dc8-865c-869d12581ad8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_ec52cd82-4fea-489a-8090-1ad9051dccf0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_840f2c36-ad1e-4b87-b638-2c7d74168828" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_ec52cd82-4fea-489a-8090-1ad9051dccf0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_4714fc7a-6c0e-4f92-ab77-21f848caea08" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_52763ff7-287f-4680-aa18-c8dfe303c252" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7935c2b7-b1e5-471e-b906-5f4146ecc743" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_52763ff7-287f-4680-aa18-c8dfe303c252" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_66d4e2ff-a40f-4af5-bda7-cbf457f591ff" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_52763ff7-287f-4680-aa18-c8dfe303c252" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_66d4e2ff-a40f-4af5-bda7-cbf457f591ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_f60ba037-7813-4817-b1db-8dd8c7547a51" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_52763ff7-287f-4680-aa18-c8dfe303c252" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_f60ba037-7813-4817-b1db-8dd8c7547a51" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentsWeightedAverageGrantDateFairValue_1adf4bfb-e29f-4dc6-99a0-eae04d7f49db" xlink:href="go-20230401.xsd#go_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentsWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_52763ff7-287f-4680-aa18-c8dfe303c252" xlink:to="loc_go_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentsWeightedAverageGrantDateFairValue_1adf4bfb-e29f-4dc6-99a0-eae04d7f49db" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_6c39e9ad-cf0f-4ac9-8254-c2c7640aed16" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_52763ff7-287f-4680-aa18-c8dfe303c252" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_6c39e9ad-cf0f-4ac9-8254-c2c7640aed16" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_5a510c20-a055-43a7-8812-eccbbc8c1964" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_52763ff7-287f-4680-aa18-c8dfe303c252" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_5a510c20-a055-43a7-8812-eccbbc8c1964" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_bad2be79-b467-4b6e-938e-fd49d46839d3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceTargetLevelPercentage_f1812f13-7ff2-4052-b394-edcf3da87eb5" xlink:href="go-20230401.xsd#go_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceTargetLevelPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7935c2b7-b1e5-471e-b906-5f4146ecc743" xlink:to="loc_go_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceTargetLevelPercentage_f1812f13-7ff2-4052-b394-edcf3da87eb5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_b8a49e4a-bed5-4f05-a9e4-ea7cf04404cf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7935c2b7-b1e5-471e-b906-5f4146ecc743" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_b8a49e4a-bed5-4f05-a9e4-ea7cf04404cf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_b414facc-1004-4d72-84d1-9123dd2407ef" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_b8a49e4a-bed5-4f05-a9e4-ea7cf04404cf" xlink:to="loc_us-gaap_AwardTypeAxis_b414facc-1004-4d72-84d1-9123dd2407ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_b414facc-1004-4d72-84d1-9123dd2407ef_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_b414facc-1004-4d72-84d1-9123dd2407ef" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_b414facc-1004-4d72-84d1-9123dd2407ef_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_fc75ecd4-8d49-4280-a021-7a786a3fce0a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_b414facc-1004-4d72-84d1-9123dd2407ef" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_fc75ecd4-8d49-4280-a021-7a786a3fce0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_c4bda5e0-b467-42b3-8ada-a129c6079cc3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_fc75ecd4-8d49-4280-a021-7a786a3fce0a" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_c4bda5e0-b467-42b3-8ada-a129c6079cc3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_53015301-a452-4368-b421-99e19d40ec75" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_fc75ecd4-8d49-4280-a021-7a786a3fce0a" xlink:to="loc_us-gaap_PerformanceSharesMember_53015301-a452-4368-b421-99e19d40ec75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_e79866f8-5423-4927-b440-c863ffcd7aa8" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_b8a49e4a-bed5-4f05-a9e4-ea7cf04404cf" xlink:to="loc_srt_StatementScenarioAxis_e79866f8-5423-4927-b440-c863ffcd7aa8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_e79866f8-5423-4927-b440-c863ffcd7aa8_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_e79866f8-5423-4927-b440-c863ffcd7aa8" xlink:to="loc_srt_ScenarioUnspecifiedDomain_e79866f8-5423-4927-b440-c863ffcd7aa8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_fcbf601b-461a-47ea-87d3-8fcbd79ca941" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_e79866f8-5423-4927-b440-c863ffcd7aa8" xlink:to="loc_srt_ScenarioUnspecifiedDomain_fcbf601b-461a-47ea-87d3-8fcbd79ca941" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProFormaMember_11aa8be1-7a3b-4ebf-b4af-20a3fd447272" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProFormaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_fcbf601b-461a-47ea-87d3-8fcbd79ca941" xlink:to="loc_srt_ProFormaMember_11aa8be1-7a3b-4ebf-b4af-20a3fd447272" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_1120c01e-82c0-48a0-868d-d38139b74006" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_b8a49e4a-bed5-4f05-a9e4-ea7cf04404cf" xlink:to="loc_srt_RangeAxis_1120c01e-82c0-48a0-868d-d38139b74006" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_1120c01e-82c0-48a0-868d-d38139b74006_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_1120c01e-82c0-48a0-868d-d38139b74006" xlink:to="loc_srt_RangeMember_1120c01e-82c0-48a0-868d-d38139b74006_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_8c267240-0a78-4a4f-8d3f-da0886db1a9f" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_1120c01e-82c0-48a0-868d-d38139b74006" xlink:to="loc_srt_RangeMember_8c267240-0a78-4a4f-8d3f-da0886db1a9f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_f7c383f0-cedd-4d88-92b6-0f60f1952307" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_8c267240-0a78-4a4f-8d3f-da0886db1a9f" xlink:to="loc_srt_MaximumMember_f7c383f0-cedd-4d88-92b6-0f60f1952307" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://groceryoutlet.com/role/SharebasedAwardsScheduleofShareBasedCompensationExpenseDetails" xlink:type="simple" xlink:href="go-20230401.xsd#SharebasedAwardsScheduleofShareBasedCompensationExpenseDetails"/>
  <link:definitionLink xlink:role="http://groceryoutlet.com/role/SharebasedAwardsScheduleofShareBasedCompensationExpenseDetails" xlink:type="extended" id="i9fec956200514522b0a071d2b5e5cf14_SharebasedAwardsScheduleofShareBasedCompensationExpenseDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_060e5119-39d7-4af6-a22a-88a616ccfb06" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_b09926e4-2446-4d6e-a359-510b06bb1e58" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_060e5119-39d7-4af6-a22a-88a616ccfb06" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_b09926e4-2446-4d6e-a359-510b06bb1e58" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_59335545-c4c5-4b0d-99d6-1b59d94e37e4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsOfDividendsCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_060e5119-39d7-4af6-a22a-88a616ccfb06" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_59335545-c4c5-4b0d-99d6-1b59d94e37e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_78e7373d-96c2-48e3-b90d-207aa6e47889" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_060e5119-39d7-4af6-a22a-88a616ccfb06" xlink:to="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_78e7373d-96c2-48e3-b90d-207aa6e47889" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_67e74f5e-28a5-456e-89b0-d2a69055dcb4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_78e7373d-96c2-48e3-b90d-207aa6e47889" xlink:to="loc_us-gaap_AwardTypeAxis_67e74f5e-28a5-456e-89b0-d2a69055dcb4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_67e74f5e-28a5-456e-89b0-d2a69055dcb4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_67e74f5e-28a5-456e-89b0-d2a69055dcb4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_67e74f5e-28a5-456e-89b0-d2a69055dcb4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_ed98c518-0f13-4f95-892b-755eba0fc833" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_67e74f5e-28a5-456e-89b0-d2a69055dcb4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_ed98c518-0f13-4f95-892b-755eba0fc833" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_ShareBasedPaymentArrangementTimeBasedOptionMember_c01bc473-dca7-429b-b6b6-4baa6641530d" xlink:href="go-20230401.xsd#go_ShareBasedPaymentArrangementTimeBasedOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_ed98c518-0f13-4f95-892b-755eba0fc833" xlink:to="loc_go_ShareBasedPaymentArrangementTimeBasedOptionMember_c01bc473-dca7-429b-b6b6-4baa6641530d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_acd713ad-6c4e-4190-bbc4-82e65df55a87" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_ed98c518-0f13-4f95-892b-755eba0fc833" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_acd713ad-6c4e-4190-bbc4-82e65df55a87" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_bf5a4d52-0a11-4e29-936c-64804f3fefd7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_ed98c518-0f13-4f95-892b-755eba0fc833" xlink:to="loc_us-gaap_PerformanceSharesMember_bf5a4d52-0a11-4e29-936c-64804f3fefd7" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://groceryoutlet.com/role/RelatedPartyTransactionsDetails" xlink:type="simple" xlink:href="go-20230401.xsd#RelatedPartyTransactionsDetails"/>
  <link:definitionLink xlink:role="http://groceryoutlet.com/role/RelatedPartyTransactionsDetails" xlink:type="extended" id="i85225e43d6d84080a4eb41360fe83f5b_RelatedPartyTransactionsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_3d937861-3afb-4b9a-8909-423e7b61aa6f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfStores_933255ac-e515-4f27-8154-55e728a1c7cd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NumberOfStores"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_3d937861-3afb-4b9a-8909-423e7b61aa6f" xlink:to="loc_us-gaap_NumberOfStores_933255ac-e515-4f27-8154-55e728a1c7cd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_NumberOfWarehouses_0b742bab-62f6-45b8-a29a-ca3b592c34cd" xlink:href="go-20230401.xsd#go_NumberOfWarehouses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_3d937861-3afb-4b9a-8909-423e7b61aa6f" xlink:to="loc_go_NumberOfWarehouses_0b742bab-62f6-45b8-a29a-ca3b592c34cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_ef3e814f-5387-4e68-9948-ae98e1004b7a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_3d937861-3afb-4b9a-8909-423e7b61aa6f" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_ef3e814f-5387-4e68-9948-ae98e1004b7a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_377190cd-9f5a-49b4-ba42-ac6289c17327" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_3d937861-3afb-4b9a-8909-423e7b61aa6f" xlink:to="loc_us-gaap_OperatingLeaseLiability_377190cd-9f5a-49b4-ba42-ac6289c17327" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasePayments_2d484c2b-bef4-4b8f-8f14-bccd6f8dd2ab" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeasePayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_3d937861-3afb-4b9a-8909-423e7b61aa6f" xlink:to="loc_us-gaap_OperatingLeasePayments_2d484c2b-bef4-4b8f-8f14-bccd6f8dd2ab" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_AccountsAndFinancingReceivableBeforeAllowanceForCreditLoss_ebaa27e1-957a-4c7c-9ee7-3d9ffd48c483" xlink:href="go-20230401.xsd#go_AccountsAndFinancingReceivableBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_3d937861-3afb-4b9a-8909-423e7b61aa6f" xlink:to="loc_go_AccountsAndFinancingReceivableBeforeAllowanceForCreditLoss_ebaa27e1-957a-4c7c-9ee7-3d9ffd48c483" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_2db4f4a5-9dff-4554-8733-e4dfab708e11" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_3d937861-3afb-4b9a-8909-423e7b61aa6f" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_2db4f4a5-9dff-4554-8733-e4dfab708e11" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_cb3ef5dc-0bd2-4a97-9619-f874a727166a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_2db4f4a5-9dff-4554-8733-e4dfab708e11" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_cb3ef5dc-0bd2-4a97-9619-f874a727166a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_cb3ef5dc-0bd2-4a97-9619-f874a727166a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_cb3ef5dc-0bd2-4a97-9619-f874a727166a" xlink:to="loc_us-gaap_RelatedPartyDomain_cb3ef5dc-0bd2-4a97-9619-f874a727166a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_77fe3e39-a579-4e3f-a9e5-042eaae570af" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_cb3ef5dc-0bd2-4a97-9619-f874a727166a" xlink:to="loc_us-gaap_RelatedPartyDomain_77fe3e39-a579-4e3f-a9e5-042eaae570af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AffiliatedEntityMember_aee06ac7-f5d0-4e80-99e3-dc16ed07e4a3" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_AffiliatedEntityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_77fe3e39-a579-4e3f-a9e5-042eaae570af" xlink:to="loc_srt_AffiliatedEntityMember_aee06ac7-f5d0-4e80-99e3-dc16ed07e4a3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_7a5e1dd8-af37-4b12-9f73-765edc56e170" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_2db4f4a5-9dff-4554-8733-e4dfab708e11" xlink:to="loc_srt_CounterpartyNameAxis_7a5e1dd8-af37-4b12-9f73-765edc56e170" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_7a5e1dd8-af37-4b12-9f73-765edc56e170_default" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_7a5e1dd8-af37-4b12-9f73-765edc56e170" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_7a5e1dd8-af37-4b12-9f73-765edc56e170_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_2ef05c44-a747-4f1d-9760-be08766c5aa8" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_7a5e1dd8-af37-4b12-9f73-765edc56e170" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_2ef05c44-a747-4f1d-9760-be08766c5aa8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_RelatedPartiesMember_41e62d05-e1aa-4984-a28d-8a32429c2786" xlink:href="go-20230401.xsd#go_RelatedPartiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_2ef05c44-a747-4f1d-9760-be08766c5aa8" xlink:to="loc_go_RelatedPartiesMember_41e62d05-e1aa-4984-a28d-8a32429c2786" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://groceryoutlet.com/role/EarningsPerShareScheduleofEarningsPerShareBasicandDilutedDetails" xlink:type="simple" xlink:href="go-20230401.xsd#EarningsPerShareScheduleofEarningsPerShareBasicandDilutedDetails"/>
  <link:definitionLink xlink:role="http://groceryoutlet.com/role/EarningsPerShareScheduleofEarningsPerShareBasicandDilutedDetails" xlink:type="extended" id="i583f7e07827e46a2bf6ff461cc667158_EarningsPerShareScheduleofEarningsPerShareBasicandDilutedDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d756948d-f089-489e-8207-078f923c96b1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAbstract_af086f26-c675-4c47-b450-3fffff83073a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLossAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d756948d-f089-489e-8207-078f923c96b1" xlink:to="loc_us-gaap_NetIncomeLossAbstract_af086f26-c675-4c47-b450-3fffff83073a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_5abcb11c-a01e-4e9c-bde5-a5bd570c10cb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetIncomeLossAbstract_af086f26-c675-4c47-b450-3fffff83073a" xlink:to="loc_us-gaap_NetIncomeLoss_5abcb11c-a01e-4e9c-bde5-a5bd570c10cb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_6f916683-62d6-4807-975e-0a8d872c749a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetIncomeLossAbstract_af086f26-c675-4c47-b450-3fffff83073a" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_6f916683-62d6-4807-975e-0a8d872c749a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_dfa0581f-67df-44c2-bfc9-501529b4246c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d756948d-f089-489e-8207-078f923c96b1" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_dfa0581f-67df-44c2-bfc9-501529b4246c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_ee3cdd3a-5d01-4f2b-8a9f-6b49d24940bf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_dfa0581f-67df-44c2-bfc9-501529b4246c" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_ee3cdd3a-5d01-4f2b-8a9f-6b49d24940bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_71fc7b83-6b7f-4546-8c1a-4d831980e9d8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_dfa0581f-67df-44c2-bfc9-501529b4246c" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_71fc7b83-6b7f-4546-8c1a-4d831980e9d8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_ab21c3d6-9c37-4797-8b2f-223e7e205932" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_dfa0581f-67df-44c2-bfc9-501529b4246c" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_ab21c3d6-9c37-4797-8b2f-223e7e205932" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareReconciliationAbstract_1c16490e-fdd6-4505-b87b-a9f4284902b7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareReconciliationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d756948d-f089-489e-8207-078f923c96b1" xlink:to="loc_us-gaap_EarningsPerShareReconciliationAbstract_1c16490e-fdd6-4505-b87b-a9f4284902b7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_529aa1d4-9290-40cf-be55-1992b3ea1807" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareReconciliationAbstract_1c16490e-fdd6-4505-b87b-a9f4284902b7" xlink:to="loc_us-gaap_EarningsPerShareBasic_529aa1d4-9290-40cf-be55-1992b3ea1807" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_3e24a034-9858-4bf2-9676-2a9b0a93d6ed" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareReconciliationAbstract_1c16490e-fdd6-4505-b87b-a9f4284902b7" xlink:to="loc_us-gaap_EarningsPerShareDiluted_3e24a034-9858-4bf2-9676-2a9b0a93d6ed" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_5b094b07-b4a4-4815-b88a-46d45b1b6a9d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d756948d-f089-489e-8207-078f923c96b1" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_5b094b07-b4a4-4815-b88a-46d45b1b6a9d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_4f9a6222-de3e-4f8c-9364-395871d8acfc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_5b094b07-b4a4-4815-b88a-46d45b1b6a9d" xlink:to="loc_us-gaap_AwardTypeAxis_4f9a6222-de3e-4f8c-9364-395871d8acfc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_4f9a6222-de3e-4f8c-9364-395871d8acfc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_4f9a6222-de3e-4f8c-9364-395871d8acfc" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_4f9a6222-de3e-4f8c-9364-395871d8acfc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_02a10944-693e-4aa8-b7b9-b90007baee42" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_4f9a6222-de3e-4f8c-9364-395871d8acfc" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_02a10944-693e-4aa8-b7b9-b90007baee42" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_a0383da1-9b86-459e-9345-a78b8bcb0b2d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeStockOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_02a10944-693e-4aa8-b7b9-b90007baee42" xlink:to="loc_us-gaap_EmployeeStockOptionMember_a0383da1-9b86-459e-9345-a78b8bcb0b2d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_go_RSUsAndPSUsMember_ff9009fd-3e21-4437-97a1-7478c6f0407d" xlink:href="go-20230401.xsd#go_RSUsAndPSUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_02a10944-693e-4aa8-b7b9-b90007baee42" xlink:to="loc_go_RSUsAndPSUsMember_ff9009fd-3e21-4437-97a1-7478c6f0407d" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://groceryoutlet.com/role/EarningsPerShareScheduleofAntidilutiveSecuritiesExcludedfromComputationofEarningsPerShareDetails" xlink:type="simple" xlink:href="go-20230401.xsd#EarningsPerShareScheduleofAntidilutiveSecuritiesExcludedfromComputationofEarningsPerShareDetails"/>
  <link:definitionLink xlink:role="http://groceryoutlet.com/role/EarningsPerShareScheduleofAntidilutiveSecuritiesExcludedfromComputationofEarningsPerShareDetails" xlink:type="extended" id="if19d6bfd18b944d1a70e2ac177cfeeeb_EarningsPerShareScheduleofAntidilutiveSecuritiesExcludedfromComputationofEarningsPerShareDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_98e33c84-054a-41fa-82a8-da139c4f281b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_36d0f53f-dd1f-4b48-bf94-d9d4d0727db4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_98e33c84-054a-41fa-82a8-da139c4f281b" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_36d0f53f-dd1f-4b48-bf94-d9d4d0727db4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_2f1bb512-e49f-4134-a58d-ef6719391303" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_98e33c84-054a-41fa-82a8-da139c4f281b" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_2f1bb512-e49f-4134-a58d-ef6719391303" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_c72fccbe-8eaa-4da9-9f91-966815d01db5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_2f1bb512-e49f-4134-a58d-ef6719391303" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_c72fccbe-8eaa-4da9-9f91-966815d01db5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_c72fccbe-8eaa-4da9-9f91-966815d01db5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_c72fccbe-8eaa-4da9-9f91-966815d01db5" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_c72fccbe-8eaa-4da9-9f91-966815d01db5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_0cbe58aa-589a-4ca5-ad58-508df660ea4b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_c72fccbe-8eaa-4da9-9f91-966815d01db5" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_0cbe58aa-589a-4ca5-ad58-508df660ea4b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_e464514b-4b0e-4008-9413-0bc41e983c06" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_0cbe58aa-589a-4ca5-ad58-508df660ea4b" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_e464514b-4b0e-4008-9413-0bc41e983c06" xlink:type="arc" order="0"/>
  </link:definitionLink>
</link:linkbase>
