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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e47f8-79c1-73ea-b57e-3571d41fdb3c,g:473fbba6-f960-4e67-be64-91f9c52b03a3-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.fivebelow.com/role/ConsolidatedStatementofShareholdersEquity" xlink:type="simple" xlink:href="five-20260502.xsd#ConsolidatedStatementofShareholdersEquity"/>
  <link:definitionLink xlink:role="http://www.fivebelow.com/role/ConsolidatedStatementofShareholdersEquity" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e47f8-7a98-76b0-b9a9-810f978db197" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019e47f8-7a98-7bb6-bbd3-15c4fea9f057" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019e47f8-7a98-76b0-b9a9-810f978db197" xlink:to="loc_us-gaap_StatementTable_019e47f8-7a98-7bb6-bbd3-15c4fea9f057" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019e47f8-7a98-758b-ae26-94c3ed6eca98" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e47f8-7a98-7bb6-bbd3-15c4fea9f057" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019e47f8-7a98-758b-ae26-94c3ed6eca98" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e47f8-7a98-758b-ae26-94c3ed6eca98_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e47f8-7a98-758b-ae26-94c3ed6eca98" xlink:to="loc_us-gaap_EquityComponentDomain_019e47f8-7a98-758b-ae26-94c3ed6eca98_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e47f8-7a98-74f6-ae77-07e1bb9f0629" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e47f8-7a98-758b-ae26-94c3ed6eca98" xlink:to="loc_us-gaap_EquityComponentDomain_019e47f8-7a98-74f6-ae77-07e1bb9f0629" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019e47f8-7a98-708f-8c79-f07e9433aad9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e47f8-7a98-74f6-ae77-07e1bb9f0629" xlink:to="loc_us-gaap_CommonStockMember_019e47f8-7a98-708f-8c79-f07e9433aad9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_019e47f8-7a98-7f75-af33-97c3306af170" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e47f8-7a98-74f6-ae77-07e1bb9f0629" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_019e47f8-7a98-7f75-af33-97c3306af170" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_019e47f8-7a98-7359-876e-a3d0b7ac841b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e47f8-7a98-74f6-ae77-07e1bb9f0629" xlink:to="loc_us-gaap_RetainedEarningsMember_019e47f8-7a98-7359-876e-a3d0b7ac841b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_019e47f8-7a98-7490-af01-d7d356485c05" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e47f8-7a98-7bb6-bbd3-15c4fea9f057" xlink:to="loc_us-gaap_AwardTypeAxis_019e47f8-7a98-7490-af01-d7d356485c05" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e47f8-7a98-7490-af01-d7d356485c05_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_019e47f8-7a98-7490-af01-d7d356485c05" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e47f8-7a98-7490-af01-d7d356485c05_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e47f8-7a98-7dc1-9332-4c95ef45e9e1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_019e47f8-7a98-7490-af01-d7d356485c05" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e47f8-7a98-7dc1-9332-4c95ef45e9e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_UnrestrictedstockMember_019e47f8-7a98-78ff-b8cb-c5819ac791b7" xlink:href="five-20260502.xsd#five_UnrestrictedstockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e47f8-7a98-7dc1-9332-4c95ef45e9e1" xlink:to="loc_five_UnrestrictedstockMember_019e47f8-7a98-78ff-b8cb-c5819ac791b7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_019e47f8-7a98-782d-b843-57e616050436" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e47f8-7a98-76b0-b9a9-810f978db197" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_019e47f8-7a98-782d-b843-57e616050436" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e47f8-7a98-7695-9edd-a3ad02603667" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e47f8-7a98-76b0-b9a9-810f978db197" xlink:to="loc_us-gaap_StockholdersEquity_019e47f8-7a98-7695-9edd-a3ad02603667" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019e47f8-7a98-75f2-b62f-bbdca3e8d1b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e47f8-7a98-76b0-b9a9-810f978db197" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019e47f8-7a98-75f2-b62f-bbdca3e8d1b7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_019e47f8-7a98-789b-8e50-57ef2c1a6367" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e47f8-7a98-76b0-b9a9-810f978db197" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_019e47f8-7a98-789b-8e50-57ef2c1a6367" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_019e47f8-7a98-7f7d-8345-1999f7485ed5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e47f8-7a98-76b0-b9a9-810f978db197" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_019e47f8-7a98-7f7d-8345-1999f7485ed5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_019e47f8-7a98-7f39-ad01-2ad0ff8334f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e47f8-7a98-76b0-b9a9-810f978db197" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_019e47f8-7a98-7f39-ad01-2ad0ff8334f0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_CommonSharesWithheldForTaxes_019e47f8-7a98-79b8-a0b0-3406de72c579" xlink:href="five-20260502.xsd#five_CommonSharesWithheldForTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e47f8-7a98-76b0-b9a9-810f978db197" xlink:to="loc_five_CommonSharesWithheldForTaxes_019e47f8-7a98-79b8-a0b0-3406de72c579" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_CommonSharesWithheld_019e47f8-7a98-71f9-921e-ad0739b42a92" xlink:href="five-20260502.xsd#five_CommonSharesWithheld"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e47f8-7a98-76b0-b9a9-810f978db197" xlink:to="loc_five_CommonSharesWithheld_019e47f8-7a98-71f9-921e-ad0739b42a92" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e47f8-7a98-7320-8e51-a44d9d22710e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e47f8-7a98-76b0-b9a9-810f978db197" xlink:to="loc_us-gaap_NetIncomeLoss_019e47f8-7a98-7320-8e51-a44d9d22710e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_019e47f8-7a98-710b-8c0e-9eb5e40a7ff0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e47f8-7a98-79ac-a645-ff65ef658b97" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fivebelow.com/role/SummaryofSignificantAccountingPoliciesFairvalueoffinancialinstrumentsDetails" xlink:type="simple" xlink:href="five-20260502.xsd#SummaryofSignificantAccountingPoliciesFairvalueoffinancialinstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.fivebelow.com/role/SummaryofSignificantAccountingPoliciesFairvalueoffinancialinstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_five_SignificantAccountingPoliciesLineItems_019e47f8-7a98-759a-961a-c5708c363216" xlink:href="five-20260502.xsd#five_SignificantAccountingPoliciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_SignificantAccountingPoliciesTable_019e47f8-7a98-7999-89d7-2dacb178624b" xlink:href="five-20260502.xsd#five_SignificantAccountingPoliciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_five_SignificantAccountingPoliciesLineItems_019e47f8-7a98-759a-961a-c5708c363216" xlink:to="loc_five_SignificantAccountingPoliciesTable_019e47f8-7a98-7999-89d7-2dacb178624b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeAxis_019e47f8-7a98-74eb-ba13-1cf557e194c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_five_SignificantAccountingPoliciesTable_019e47f8-7a98-7999-89d7-2dacb178624b" xlink:to="loc_us-gaap_InvestmentTypeAxis_019e47f8-7a98-74eb-ba13-1cf557e194c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_019e47f8-7a98-74eb-ba13-1cf557e194c7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentTypeCategorizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InvestmentTypeAxis_019e47f8-7a98-74eb-ba13-1cf557e194c7" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_019e47f8-7a98-74eb-ba13-1cf557e194c7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_019e47f8-7a98-726a-89c4-f976f8eed14c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentTypeCategorizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InvestmentTypeAxis_019e47f8-7a98-74eb-ba13-1cf557e194c7" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_019e47f8-7a98-726a-89c4-f976f8eed14c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermInvestmentsMember_019e47f8-7a98-7ffc-afe9-a5c7290b0401" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermInvestmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_019e47f8-7a98-726a-89c4-f976f8eed14c" xlink:to="loc_us-gaap_ShortTermInvestmentsMember_019e47f8-7a98-7ffc-afe9-a5c7290b0401" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateBondSecuritiesMember_019e47f8-7a98-7f5c-94e5-81a647a3c8b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateBondSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermInvestmentsMember_019e47f8-7a98-7ffc-afe9-a5c7290b0401" xlink:to="loc_us-gaap_CorporateBondSecuritiesMember_019e47f8-7a98-7f5c-94e5-81a647a3c8b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e47f8-7a98-7522-9893-3c2840ccfcef" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_five_SignificantAccountingPoliciesTable_019e47f8-7a98-7999-89d7-2dacb178624b" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e47f8-7a98-7522-9893-3c2840ccfcef" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e47f8-7a98-7522-9893-3c2840ccfcef_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e47f8-7a98-7522-9893-3c2840ccfcef" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e47f8-7a98-7522-9893-3c2840ccfcef_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e47f8-7a98-7e31-83a8-a3627aa753d7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e47f8-7a98-7522-9893-3c2840ccfcef" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e47f8-7a98-7e31-83a8-a3627aa753d7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_019e47f8-7a98-7a7a-b7e8-3241848bfddc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e47f8-7a98-7e31-83a8-a3627aa753d7" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_019e47f8-7a98-7a7a-b7e8-3241848bfddc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019e47f8-7a98-7e21-8fc9-0f47996c7a17" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e47f8-7a98-7e31-83a8-a3627aa753d7" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019e47f8-7a98-7e21-8fc9-0f47996c7a17" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019e47f8-7a98-764e-a78b-66a5c6dadbd9" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_five_SignificantAccountingPoliciesTable_019e47f8-7a98-7999-89d7-2dacb178624b" xlink:to="loc_srt_RangeAxis_019e47f8-7a98-764e-a78b-66a5c6dadbd9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e47f8-7a98-764e-a78b-66a5c6dadbd9_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019e47f8-7a98-764e-a78b-66a5c6dadbd9" xlink:to="loc_srt_RangeMember_019e47f8-7a98-764e-a78b-66a5c6dadbd9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e47f8-7a98-7d51-a63a-4db5733fc0a5" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019e47f8-7a98-764e-a78b-66a5c6dadbd9" xlink:to="loc_srt_RangeMember_019e47f8-7a98-7d51-a63a-4db5733fc0a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019e47f8-7a98-7706-85ad-ac32af3e2733" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e47f8-7a98-7d51-a63a-4db5733fc0a5" xlink:to="loc_srt_MinimumMember_019e47f8-7a98-7706-85ad-ac32af3e2733" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019e47f8-7a98-779c-b4ef-59001fbad839" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e47f8-7a98-7d51-a63a-4db5733fc0a5" xlink:to="loc_srt_MaximumMember_019e47f8-7a98-779c-b4ef-59001fbad839" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_CashEquivalents_019e47f8-7a98-7e3d-994f-392949b8e39a" xlink:href="five-20260502.xsd#five_CashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_five_SignificantAccountingPoliciesLineItems_019e47f8-7a98-759a-961a-c5708c363216" xlink:to="loc_five_CashEquivalents_019e47f8-7a98-7e3d-994f-392949b8e39a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecurities_019e47f8-7a98-73c7-b20d-869bb09d2fb4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HeldToMaturitySecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_five_SignificantAccountingPoliciesLineItems_019e47f8-7a98-759a-961a-c5708c363216" xlink:to="loc_us-gaap_HeldToMaturitySecurities_019e47f8-7a98-73c7-b20d-869bb09d2fb4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain_019e47f8-7a98-7246-b29c-baa4b04bf7f3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_five_SignificantAccountingPoliciesLineItems_019e47f8-7a98-759a-961a-c5708c363216" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain_019e47f8-7a98-7246-b29c-baa4b04bf7f3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss_019e47f8-7a98-77bf-95e6-9071ff57d63b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_five_SignificantAccountingPoliciesLineItems_019e47f8-7a98-759a-961a-c5708c363216" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss_019e47f8-7a98-77bf-95e6-9071ff57d63b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesFairValue_019e47f8-7a98-7522-aaf7-5cde43851cfd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HeldToMaturitySecuritiesFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_five_SignificantAccountingPoliciesLineItems_019e47f8-7a98-759a-961a-c5708c363216" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesFairValue_019e47f8-7a98-7522-aaf7-5cde43851cfd" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fivebelow.com/role/RevenuefromContractsWithCustomersDetails" xlink:type="simple" xlink:href="five-20260502.xsd#RevenuefromContractsWithCustomersDetails"/>
  <link:definitionLink xlink:role="http://www.fivebelow.com/role/RevenuefromContractsWithCustomersDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_019e47f8-7a98-7d6a-be1b-b6cd51beb04a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_019e47f8-7a98-7ee5-953c-a9ce66904149" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e47f8-7a98-7d6a-be1b-b6cd51beb04a" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_019e47f8-7a98-7ee5-953c-a9ce66904149" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019e47f8-7a98-7e34-b9b2-6c5f32e83bba" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019e47f8-7a98-7ee5-953c-a9ce66904149" xlink:to="loc_srt_ProductOrServiceAxis_019e47f8-7a98-7e34-b9b2-6c5f32e83bba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e47f8-7a98-7e34-b9b2-6c5f32e83bba_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019e47f8-7a98-7e34-b9b2-6c5f32e83bba" xlink:to="loc_srt_ProductsAndServicesDomain_019e47f8-7a98-7e34-b9b2-6c5f32e83bba_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e47f8-7a98-7259-8531-75e8872ec0cf" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019e47f8-7a98-7e34-b9b2-6c5f32e83bba" xlink:to="loc_srt_ProductsAndServicesDomain_019e47f8-7a98-7259-8531-75e8872ec0cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_LeisureMember_019e47f8-7a98-752f-8d20-b249190059eb" xlink:href="five-20260502.xsd#five_LeisureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e47f8-7a98-7259-8531-75e8872ec0cf" xlink:to="loc_five_LeisureMember_019e47f8-7a98-752f-8d20-b249190059eb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_FashionAndHomeMember_019e47f8-7a98-7e40-bc1e-d2349ba9f224" xlink:href="five-20260502.xsd#five_FashionAndHomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e47f8-7a98-7259-8531-75e8872ec0cf" xlink:to="loc_five_FashionAndHomeMember_019e47f8-7a98-7e40-bc1e-d2349ba9f224" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_PartyAndSnackMember_019e47f8-7a98-72da-afe2-1bf2dc7989ab" xlink:href="five-20260502.xsd#five_PartyAndSnackMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e47f8-7a98-7259-8531-75e8872ec0cf" xlink:to="loc_five_PartyAndSnackMember_019e47f8-7a98-72da-afe2-1bf2dc7989ab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e47f8-7a98-7174-a446-5abc3625b9be" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e47f8-7a98-7d6a-be1b-b6cd51beb04a" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e47f8-7a98-7174-a446-5abc3625b9be" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_NetSalesAsPercentageOfNetSales_019e47f8-7a98-73e9-b97f-05eb40c8dd0c" xlink:href="five-20260502.xsd#five_NetSalesAsPercentageOfNetSales"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019e47f8-7a98-7d6a-be1b-b6cd51beb04a" xlink:to="loc_five_NetSalesAsPercentageOfNetSales_019e47f8-7a98-73e9-b97f-05eb40c8dd0c" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fivebelow.com/role/IncomePerCommonShareNarrativeDetails" xlink:type="simple" xlink:href="five-20260502.xsd#IncomePerCommonShareNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fivebelow.com/role/IncomePerCommonShareNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e47f8-7a98-7eba-a04f-42ca8a63df1b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_019e47f8-7a98-77d0-9d82-a388ccee8f0f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e47f8-7a98-7eba-a04f-42ca8a63df1b" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_019e47f8-7a98-77d0-9d82-a388ccee8f0f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_019e47f8-7a98-7bd0-be22-356252ac0447" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_019e47f8-7a98-77d0-9d82-a388ccee8f0f" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_019e47f8-7a98-7bd0-be22-356252ac0447" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019e47f8-7a98-7bd0-be22-356252ac0447_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_019e47f8-7a98-7bd0-be22-356252ac0447" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019e47f8-7a98-7bd0-be22-356252ac0447_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019e47f8-7a98-7ba0-ac01-334e19af1884" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_019e47f8-7a98-7bd0-be22-356252ac0447" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019e47f8-7a98-7ba0-ac01-334e19af1884" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_019e47f8-7a98-775e-ac59-477de8ad9c16" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_019e47f8-7a98-7ba0-ac01-334e19af1884" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_019e47f8-7a98-775e-ac59-477de8ad9c16" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_019e47f8-7a98-7940-be0b-7cc20096dbbc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_019e47f8-7a98-7eba-a04f-42ca8a63df1b" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_019e47f8-7a98-7940-be0b-7cc20096dbbc" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fivebelow.com/role/LineofCreditDetails" xlink:type="simple" xlink:href="five-20260502.xsd#LineofCreditDetails"/>
  <link:definitionLink xlink:role="http://www.fivebelow.com/role/LineofCreditDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019e47f8-7a98-7e87-a0f3-fecd6378b0fd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019e47f8-7a98-7149-8cf3-6ec2ea3bb5bf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e47f8-7a98-7e87-a0f3-fecd6378b0fd" xlink:to="loc_us-gaap_DebtInstrumentTable_019e47f8-7a98-7149-8cf3-6ec2ea3bb5bf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_019e47f8-7a98-7038-926c-78485a361de1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e47f8-7a98-7149-8cf3-6ec2ea3bb5bf" xlink:to="loc_us-gaap_VariableRateAxis_019e47f8-7a98-7038-926c-78485a361de1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_019e47f8-7a98-7038-926c-78485a361de1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_019e47f8-7a98-7038-926c-78485a361de1" xlink:to="loc_us-gaap_VariableRateDomain_019e47f8-7a98-7038-926c-78485a361de1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_019e47f8-7a98-7c01-b436-75e36580826f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_019e47f8-7a98-7038-926c-78485a361de1" xlink:to="loc_us-gaap_VariableRateDomain_019e47f8-7a98-7c01-b436-75e36580826f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredOvernightFinancingRateSofrMember_019e47f8-7a98-7f2f-b869-5559c1645711" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SecuredOvernightFinancingRateSofrMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_019e47f8-7a98-7c01-b436-75e36580826f" xlink:to="loc_us-gaap_SecuredOvernightFinancingRateSofrMember_019e47f8-7a98-7f2f-b869-5559c1645711" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BaseRateMember_019e47f8-7a98-70ab-afe0-71cb6ca77140" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BaseRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_019e47f8-7a98-7c01-b436-75e36580826f" xlink:to="loc_us-gaap_BaseRateMember_019e47f8-7a98-70ab-afe0-71cb6ca77140" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e47f8-7a98-7be8-b351-a154a8ec0c81" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e47f8-7a98-7149-8cf3-6ec2ea3bb5bf" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e47f8-7a98-7be8-b351-a154a8ec0c81" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e47f8-7a98-7be8-b351-a154a8ec0c81_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e47f8-7a98-7be8-b351-a154a8ec0c81" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e47f8-7a98-7be8-b351-a154a8ec0c81_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e47f8-7a98-7c92-9b7a-5292b47ab7fa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e47f8-7a98-7be8-b351-a154a8ec0c81" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e47f8-7a98-7c92-9b7a-5292b47ab7fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019e47f8-7a98-73be-9340-7390513d2bae" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e47f8-7a98-7c92-9b7a-5292b47ab7fa" xlink:to="loc_us-gaap_LineOfCreditMember_019e47f8-7a98-73be-9340-7390513d2bae" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019e47f8-7a98-7d7b-872d-7fd4f2831222" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e47f8-7a98-7149-8cf3-6ec2ea3bb5bf" xlink:to="loc_us-gaap_CreditFacilityAxis_019e47f8-7a98-7d7b-872d-7fd4f2831222" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e47f8-7a98-7d7b-872d-7fd4f2831222_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_019e47f8-7a98-7d7b-872d-7fd4f2831222" xlink:to="loc_us-gaap_CreditFacilityDomain_019e47f8-7a98-7d7b-872d-7fd4f2831222_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e47f8-7a98-772e-a56f-7b6cb33d5696" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_019e47f8-7a98-7d7b-872d-7fd4f2831222" xlink:to="loc_us-gaap_CreditFacilityDomain_019e47f8-7a98-772e-a56f-7b6cb33d5696" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_AmendedRevolvingCreditFacilityMember_019e47f8-7a98-7010-9871-25093e9f2493" xlink:href="five-20260502.xsd#five_AmendedRevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e47f8-7a98-772e-a56f-7b6cb33d5696" xlink:to="loc_five_AmendedRevolvingCreditFacilityMember_019e47f8-7a98-7010-9871-25093e9f2493" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019e47f8-7a98-7148-9f35-d9dd57a238b6" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e47f8-7a98-7149-8cf3-6ec2ea3bb5bf" xlink:to="loc_srt_RangeAxis_019e47f8-7a98-7148-9f35-d9dd57a238b6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e47f8-7a98-7148-9f35-d9dd57a238b6_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019e47f8-7a98-7148-9f35-d9dd57a238b6" xlink:to="loc_srt_RangeMember_019e47f8-7a98-7148-9f35-d9dd57a238b6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e47f8-7a98-7962-a61f-aed1b7fd854c" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019e47f8-7a98-7148-9f35-d9dd57a238b6" xlink:to="loc_srt_RangeMember_019e47f8-7a98-7962-a61f-aed1b7fd854c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019e47f8-7a98-7e76-968f-97f04e767143" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e47f8-7a98-7962-a61f-aed1b7fd854c" xlink:to="loc_srt_MinimumMember_019e47f8-7a98-7e76-968f-97f04e767143" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019e47f8-7a98-7f1a-8ba9-038a70acbbc1" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e47f8-7a98-7962-a61f-aed1b7fd854c" xlink:to="loc_srt_MaximumMember_019e47f8-7a98-7f1a-8ba9-038a70acbbc1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e47f8-7a98-7bfc-b313-0e21c7b4e4c8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e47f8-7a98-7e87-a0f3-fecd6378b0fd" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e47f8-7a98-7bfc-b313-0e21c7b4e4c8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019e47f8-7a98-765e-b439-09a5e4f485d1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e47f8-7a98-7e87-a0f3-fecd6378b0fd" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019e47f8-7a98-765e-b439-09a5e4f485d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_019e47f8-7a98-7724-86f5-25be3fb187a3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e47f8-7a98-7e87-a0f3-fecd6378b0fd" xlink:to="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_019e47f8-7a98-7724-86f5-25be3fb187a3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_LineOfCreditFacilityAccordionFeatureIncreaseLimit_019e47f8-7a98-7c3b-8166-a61e0fdd714f" xlink:href="five-20260502.xsd#five_LineOfCreditFacilityAccordionFeatureIncreaseLimit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e47f8-7a98-7e87-a0f3-fecd6378b0fd" xlink:to="loc_five_LineOfCreditFacilityAccordionFeatureIncreaseLimit_019e47f8-7a98-7c3b-8166-a61e0fdd714f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_LineOfCreditFacilityMaximumAllowedToBeBorrowedBasedOnAvailableCashBalance_019e47f8-7a98-744d-9043-9d58a43c7cf9" xlink:href="five-20260502.xsd#five_LineOfCreditFacilityMaximumAllowedToBeBorrowedBasedOnAvailableCashBalance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e47f8-7a98-7e87-a0f3-fecd6378b0fd" xlink:to="loc_five_LineOfCreditFacilityMaximumAllowedToBeBorrowedBasedOnAvailableCashBalance_019e47f8-7a98-744d-9043-9d58a43c7cf9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_MinimumAvailabilityOfAggregateCommitmentsAndLoanCapRequiredPercent_019e47f8-7a98-7a7d-89fe-99e7274eab5b" xlink:href="five-20260502.xsd#five_MinimumAvailabilityOfAggregateCommitmentsAndLoanCapRequiredPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e47f8-7a98-7e87-a0f3-fecd6378b0fd" xlink:to="loc_five_MinimumAvailabilityOfAggregateCommitmentsAndLoanCapRequiredPercent_019e47f8-7a98-7a7d-89fe-99e7274eab5b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_MinimumAvailabilityOfLoanCapAfterStepdownDateRequiredPercent_019e47f8-7a98-7485-862d-ff70801979f8" xlink:href="five-20260502.xsd#five_MinimumAvailabilityOfLoanCapAfterStepdownDateRequiredPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e47f8-7a98-7e87-a0f3-fecd6378b0fd" xlink:to="loc_five_MinimumAvailabilityOfLoanCapAfterStepdownDateRequiredPercent_019e47f8-7a98-7485-862d-ff70801979f8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_MinimumAvailabilityOfAggregateCommitmentsAndLoanCapRequiredInEventOfDefaultOrAvailabilityPercent_019e47f8-7a98-70ef-a9fe-cdf6c64cd25d" xlink:href="five-20260502.xsd#five_MinimumAvailabilityOfAggregateCommitmentsAndLoanCapRequiredInEventOfDefaultOrAvailabilityPercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e47f8-7a98-7e87-a0f3-fecd6378b0fd" xlink:to="loc_five_MinimumAvailabilityOfAggregateCommitmentsAndLoanCapRequiredInEventOfDefaultOrAvailabilityPercent_019e47f8-7a98-70ef-a9fe-cdf6c64cd25d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_PeriodRequiredForAvailabilityOfLoanCapRequirement_019e47f8-7a98-7968-854a-08c993d0413e" xlink:href="five-20260502.xsd#five_PeriodRequiredForAvailabilityOfLoanCapRequirement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e47f8-7a98-7e87-a0f3-fecd6378b0fd" xlink:to="loc_five_PeriodRequiredForAvailabilityOfLoanCapRequirement_019e47f8-7a98-7968-854a-08c993d0413e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_019e47f8-7a98-754c-b0f7-83aa8bedba20" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LettersOfCreditOutstandingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e47f8-7a98-7e87-a0f3-fecd6378b0fd" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_019e47f8-7a98-754c-b0f7-83aa8bedba20" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_019e47f8-7a98-73fd-bf00-be41c69e3c54" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e47f8-7a98-7e87-a0f3-fecd6378b0fd" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_019e47f8-7a98-73fd-bf00-be41c69e3c54" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fivebelow.com/role/ShareBasedCompensation2002EquityincentiveplanDetails" xlink:type="simple" xlink:href="five-20260502.xsd#ShareBasedCompensation2002EquityincentiveplanDetails"/>
  <link:definitionLink xlink:role="http://www.fivebelow.com/role/ShareBasedCompensation2002EquityincentiveplanDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-79a1-84d2-a711171a23b2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019e47f8-7a98-727e-a598-c0180827a17b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-79a1-84d2-a711171a23b2" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019e47f8-7a98-727e-a598-c0180827a17b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_019e47f8-7a98-7818-9196-d5db33df1a83" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019e47f8-7a98-727e-a598-c0180827a17b" xlink:to="loc_us-gaap_PlanNameAxis_019e47f8-7a98-7818-9196-d5db33df1a83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_019e47f8-7a98-7818-9196-d5db33df1a83_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_019e47f8-7a98-7818-9196-d5db33df1a83" xlink:to="loc_us-gaap_PlanNameDomain_019e47f8-7a98-7818-9196-d5db33df1a83_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_019e47f8-7a98-73ee-aecd-34300b9a8e46" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_019e47f8-7a98-7818-9196-d5db33df1a83" xlink:to="loc_us-gaap_PlanNameDomain_019e47f8-7a98-73ee-aecd-34300b9a8e46" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_TwoThousandTwentyTwoEquityIncentivePlanMember_019e47f8-7a98-75a7-8af8-efd5fb4eaf48" xlink:href="five-20260502.xsd#five_TwoThousandTwentyTwoEquityIncentivePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_019e47f8-7a98-73ee-aecd-34300b9a8e46" xlink:to="loc_five_TwoThousandTwentyTwoEquityIncentivePlanMember_019e47f8-7a98-75a7-8af8-efd5fb4eaf48" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_019e47f8-7a98-7db5-92bb-7e5a2c5612ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-79a1-84d2-a711171a23b2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_019e47f8-7a98-7db5-92bb-7e5a2c5612ce" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndNonOptionEquityInstrumentsOutstandingNumber_019e47f8-7a98-7049-9523-f689328c6166" xlink:href="five-20260502.xsd#five_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndNonOptionEquityInstrumentsOutstandingNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-79a1-84d2-a711171a23b2" xlink:to="loc_five_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndNonOptionEquityInstrumentsOutstandingNumber_019e47f8-7a98-7049-9523-f689328c6166" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fivebelow.com/role/ShareBasedCompensationRestrictedstockunitsandperformancebasedrestrictedstockunitsDetails" xlink:type="simple" xlink:href="five-20260502.xsd#ShareBasedCompensationRestrictedstockunitsandperformancebasedrestrictedstockunitsDetails"/>
  <link:definitionLink xlink:role="http://www.fivebelow.com/role/ShareBasedCompensationRestrictedstockunitsandperformancebasedrestrictedstockunitsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-78c4-bd37-87e1ab20c196" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019e47f8-7a98-7bea-87d0-78e896cf4240" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-78c4-bd37-87e1ab20c196" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019e47f8-7a98-7bea-87d0-78e896cf4240" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019e47f8-7a98-71ed-b354-f2bc10778c24" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019e47f8-7a98-7bea-87d0-78e896cf4240" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019e47f8-7a98-71ed-b354-f2bc10778c24" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e47f8-7a98-71ed-b354-f2bc10778c24_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e47f8-7a98-71ed-b354-f2bc10778c24" xlink:to="loc_us-gaap_EquityComponentDomain_019e47f8-7a98-71ed-b354-f2bc10778c24_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e47f8-7a98-74db-8941-27a94c454240" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e47f8-7a98-71ed-b354-f2bc10778c24" xlink:to="loc_us-gaap_EquityComponentDomain_019e47f8-7a98-74db-8941-27a94c454240" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_019e47f8-7a98-782b-85b5-e4d10db7ad30" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e47f8-7a98-74db-8941-27a94c454240" xlink:to="loc_us-gaap_TreasuryStockCommonMember_019e47f8-7a98-782b-85b5-e4d10db7ad30" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_019e47f8-7a98-70e8-a5cc-332fa1f6d746" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e47f8-7a98-74db-8941-27a94c454240" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_019e47f8-7a98-70e8-a5cc-332fa1f6d746" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_019e47f8-7a98-78d9-92d6-2336a1f02fe7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019e47f8-7a98-7bea-87d0-78e896cf4240" xlink:to="loc_us-gaap_AwardTypeAxis_019e47f8-7a98-78d9-92d6-2336a1f02fe7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e47f8-7a98-78d9-92d6-2336a1f02fe7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_019e47f8-7a98-78d9-92d6-2336a1f02fe7" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e47f8-7a98-78d9-92d6-2336a1f02fe7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e47f8-7a98-756e-887c-0bf600fba8f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_019e47f8-7a98-78d9-92d6-2336a1f02fe7" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e47f8-7a98-756e-887c-0bf600fba8f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_PerformanceBasedRestrictedStockUnitsBasedOnMarketConditionMember_019e47f8-7a98-7742-9226-343b6fc2031d" xlink:href="five-20260502.xsd#five_PerformanceBasedRestrictedStockUnitsBasedOnMarketConditionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e47f8-7a98-756e-887c-0bf600fba8f0" xlink:to="loc_five_PerformanceBasedRestrictedStockUnitsBasedOnMarketConditionMember_019e47f8-7a98-7742-9226-343b6fc2031d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_019e47f8-7a98-765d-aca7-44544a7929c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e47f8-7a98-756e-887c-0bf600fba8f0" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_019e47f8-7a98-765d-aca7-44544a7929c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_PerformanceRestrictedStockUnitsMember_019e47f8-7a98-7768-aa75-112b4206c4b0" xlink:href="five-20260502.xsd#five_PerformanceRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e47f8-7a98-756e-887c-0bf600fba8f0" xlink:to="loc_five_PerformanceRestrictedStockUnitsMember_019e47f8-7a98-7768-aa75-112b4206c4b0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_RestrictedStockUnitsAndPerformanceBasedRestrictedStockUnitsMember_019e47f8-7a98-7e0f-a7f7-3043ec3e6e13" xlink:href="five-20260502.xsd#five_RestrictedStockUnitsAndPerformanceBasedRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e47f8-7a98-756e-887c-0bf600fba8f0" xlink:to="loc_five_RestrictedStockUnitsAndPerformanceBasedRestrictedStockUnitsMember_019e47f8-7a98-7e0f-a7f7-3043ec3e6e13" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_019e47f8-7a98-73ba-b321-3b86a7295660" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e47f8-7a98-756e-887c-0bf600fba8f0" xlink:to="loc_us-gaap_PerformanceSharesMember_019e47f8-7a98-73ba-b321-3b86a7295660" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019e47f8-7a98-782a-828f-89f88c02525e" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019e47f8-7a98-7bea-87d0-78e896cf4240" xlink:to="loc_srt_RangeAxis_019e47f8-7a98-782a-828f-89f88c02525e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e47f8-7a98-782a-828f-89f88c02525e_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019e47f8-7a98-782a-828f-89f88c02525e" xlink:to="loc_srt_RangeMember_019e47f8-7a98-782a-828f-89f88c02525e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e47f8-7a98-7232-bef3-c78cc537b1c9" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019e47f8-7a98-782a-828f-89f88c02525e" xlink:to="loc_srt_RangeMember_019e47f8-7a98-7232-bef3-c78cc537b1c9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019e47f8-7a98-7d82-bbf5-3893736dcabd" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e47f8-7a98-7232-bef3-c78cc537b1c9" xlink:to="loc_srt_MinimumMember_019e47f8-7a98-7d82-bbf5-3893736dcabd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019e47f8-7a98-7eed-bfb2-fb46f582489e" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e47f8-7a98-7232-bef3-c78cc537b1c9" xlink:to="loc_srt_MaximumMember_019e47f8-7a98-7eed-bfb2-fb46f582489e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_019e47f8-7a98-786f-b5a1-40dc424d4c18" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-78c4-bd37-87e1ab20c196" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_019e47f8-7a98-786f-b5a1-40dc424d4c18" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_019e47f8-7a98-7499-80a3-32140bf73a0c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-78c4-bd37-87e1ab20c196" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_019e47f8-7a98-7499-80a3-32140bf73a0c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_019e47f8-7a98-7a03-9068-f0b29506aa2f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_019e47f8-7a98-7499-80a3-32140bf73a0c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_019e47f8-7a98-7a03-9068-f0b29506aa2f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_019e47f8-7a98-7b94-b73c-bf58f5a34c74" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_019e47f8-7a98-7499-80a3-32140bf73a0c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_019e47f8-7a98-7b94-b73c-bf58f5a34c74" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_019e47f8-7a98-7574-9d30-3afe9202cf27" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_019e47f8-7a98-7499-80a3-32140bf73a0c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_019e47f8-7a98-7574-9d30-3afe9202cf27" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_019e47f8-7a98-7a38-bb38-816c473802d5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_019e47f8-7a98-7499-80a3-32140bf73a0c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_019e47f8-7a98-7a38-bb38-816c473802d5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_019e47f8-7a98-7579-bf97-a3cb18edf8d1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_019e47f8-7a98-79bd-960d-e1fb73785a40" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-78c4-bd37-87e1ab20c196" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_019e47f8-7a98-79bd-960d-e1fb73785a40" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue_019e47f8-7a98-72d4-b4d7-40e161481bfd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_019e47f8-7a98-79bd-960d-e1fb73785a40" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue_019e47f8-7a98-72d4-b4d7-40e161481bfd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_019e47f8-7a98-7475-acaf-3b06125c2d4c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_019e47f8-7a98-79bd-960d-e1fb73785a40" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_019e47f8-7a98-7475-acaf-3b06125c2d4c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_019e47f8-7a98-7ede-b422-2d5da1bcbaae" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_019e47f8-7a98-79bd-960d-e1fb73785a40" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_019e47f8-7a98-7ede-b422-2d5da1bcbaae" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_019e47f8-7a98-7cdd-9113-8d7051be3417" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_019e47f8-7a98-79bd-960d-e1fb73785a40" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_019e47f8-7a98-7cdd-9113-8d7051be3417" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue_019e47f8-7a98-7069-9e01-5442361dacc2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_019e47f8-7a98-7150-8203-50d5220cf1e9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-78c4-bd37-87e1ab20c196" xlink:to="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_019e47f8-7a98-7150-8203-50d5220cf1e9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_019e47f8-7a98-755b-9674-168063a422fa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-78c4-bd37-87e1ab20c196" xlink:to="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_019e47f8-7a98-755b-9674-168063a422fa" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_019e47f8-7a98-7ea9-a239-85ba692a8dbc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-78c4-bd37-87e1ab20c196" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_019e47f8-7a98-7ea9-a239-85ba692a8dbc" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_019e47f8-7a98-745e-b1d3-fbe0a74a18f9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-78c4-bd37-87e1ab20c196" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_019e47f8-7a98-745e-b1d3-fbe0a74a18f9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_019e47f8-7a98-7863-91ef-ed53880bf0d1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-78c4-bd37-87e1ab20c196" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_019e47f8-7a98-7863-91ef-ed53880bf0d1" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fivebelow.com/role/ShareBasedCompensationSharerepurchaseprogramDetails" xlink:type="simple" xlink:href="five-20260502.xsd#ShareBasedCompensationSharerepurchaseprogramDetails"/>
  <link:definitionLink xlink:role="http://www.fivebelow.com/role/ShareBasedCompensationSharerepurchaseprogramDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-7697-bcea-1ae09167455d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019e47f8-7a98-790d-901f-f9c03cfc5712" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-7697-bcea-1ae09167455d" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019e47f8-7a98-790d-901f-f9c03cfc5712" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_019e47f8-7a98-7879-8e5e-c3993bbff3b6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019e47f8-7a98-790d-901f-f9c03cfc5712" xlink:to="loc_us-gaap_PlanNameAxis_019e47f8-7a98-7879-8e5e-c3993bbff3b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_019e47f8-7a98-7879-8e5e-c3993bbff3b6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_019e47f8-7a98-7879-8e5e-c3993bbff3b6" xlink:to="loc_us-gaap_PlanNameDomain_019e47f8-7a98-7879-8e5e-c3993bbff3b6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_019e47f8-7a98-7d2d-adf8-499b6feac0a9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_019e47f8-7a98-7879-8e5e-c3993bbff3b6" xlink:to="loc_us-gaap_PlanNameDomain_019e47f8-7a98-7d2d-adf8-499b6feac0a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_TwoThousandTwentyTwoEquityIncentivePlanMember_019e47f8-7a98-7c80-a8a5-b7e9db5c4579" xlink:href="five-20260502.xsd#five_TwoThousandTwentyTwoEquityIncentivePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_019e47f8-7a98-7d2d-adf8-499b6feac0a9" xlink:to="loc_five_TwoThousandTwentyTwoEquityIncentivePlanMember_019e47f8-7a98-7c80-a8a5-b7e9db5c4579" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StockRepurchaseProgramAuthorizedAmount1_019e47f8-7a98-7c1f-a07e-d801264cb3da" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-7697-bcea-1ae09167455d" xlink:to="loc_srt_StockRepurchaseProgramAuthorizedAmount1_019e47f8-7a98-7c1f-a07e-d801264cb3da" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_019e47f8-7a98-7f4f-8c17-58362b9edd13" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-7697-bcea-1ae09167455d" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_019e47f8-7a98-7f4f-8c17-58362b9edd13" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_019e47f8-7a98-70b4-980b-acdfca24dd64" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-7697-bcea-1ae09167455d" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_019e47f8-7a98-70b4-980b-acdfca24dd64" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockAcquiredAverageCostPerShare_019e47f8-7a98-71f5-b59f-9075be6f2ace" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockAcquiredAverageCostPerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019e47f8-7a98-7697-bcea-1ae09167455d" xlink:to="loc_us-gaap_TreasuryStockAcquiredAverageCostPerShare_019e47f8-7a98-71f5-b59f-9075be6f2ace" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fivebelow.com/role/IncomeTaxesNarrativeDetails" xlink:type="simple" xlink:href="five-20260502.xsd#IncomeTaxesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.fivebelow.com/role/IncomeTaxesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_five_IncomeTaxLineItems_019e47f8-7a98-7bd3-8eeb-8362c295216e" xlink:href="five-20260502.xsd#five_IncomeTaxLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_IncomeTaxTable_019e47f8-7a98-7696-9b7d-273f9ebc31df" xlink:href="five-20260502.xsd#five_IncomeTaxTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_five_IncomeTaxLineItems_019e47f8-7a98-7bd3-8eeb-8362c295216e" xlink:to="loc_five_IncomeTaxTable_019e47f8-7a98-7696-9b7d-273f9ebc31df" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019e47f8-7a98-7ec1-9ab9-8ed889ce80c7" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_five_IncomeTaxTable_019e47f8-7a98-7696-9b7d-273f9ebc31df" xlink:to="loc_srt_RangeAxis_019e47f8-7a98-7ec1-9ab9-8ed889ce80c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e47f8-7a98-7ec1-9ab9-8ed889ce80c7_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019e47f8-7a98-7ec1-9ab9-8ed889ce80c7" xlink:to="loc_srt_RangeMember_019e47f8-7a98-7ec1-9ab9-8ed889ce80c7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e47f8-7a98-759c-b7c9-c6c86880c0b1" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019e47f8-7a98-7ec1-9ab9-8ed889ce80c7" xlink:to="loc_srt_RangeMember_019e47f8-7a98-759c-b7c9-c6c86880c0b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019e47f8-7a98-7bd5-b87c-6ecabb365d4f" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e47f8-7a98-759c-b7c9-c6c86880c0b1" xlink:to="loc_srt_MinimumMember_019e47f8-7a98-7bd5-b87c-6ecabb365d4f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019e47f8-7a98-7286-be63-4735bc165204" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e47f8-7a98-759c-b7c9-c6c86880c0b1" xlink:to="loc_srt_MaximumMember_019e47f8-7a98-7286-be63-4735bc165204" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_AccrualForUncertainTaxInterestOrPenalties_019e47f8-7a98-762a-a7ce-45d96483866e" xlink:href="five-20260502.xsd#five_AccrualForUncertainTaxInterestOrPenalties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_five_IncomeTaxLineItems_019e47f8-7a98-7bd3-8eeb-8362c295216e" xlink:to="loc_five_AccrualForUncertainTaxInterestOrPenalties_019e47f8-7a98-762a-a7ce-45d96483866e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_StateIncomeTaxesStatuteOfLimitationsPeriod_019e47f8-7a98-7c01-8522-fc88b4e09b89" xlink:href="five-20260502.xsd#five_StateIncomeTaxesStatuteOfLimitationsPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_five_IncomeTaxLineItems_019e47f8-7a98-7bd3-8eeb-8362c295216e" xlink:to="loc_five_StateIncomeTaxesStatuteOfLimitationsPeriod_019e47f8-7a98-7c01-8522-fc88b4e09b89" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.fivebelow.com/role/SegmentReportingScheduleofsegmentprofitandlossDetails" xlink:type="simple" xlink:href="five-20260502.xsd#SegmentReportingScheduleofsegmentprofitandlossDetails"/>
  <link:definitionLink xlink:role="http://www.fivebelow.com/role/SegmentReportingScheduleofsegmentprofitandlossDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019e47f8-7a98-7ee9-a7fd-0d84e038672a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e47f8-7a98-71b7-bd4e-99edacd9e3ea" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e47f8-7a98-7ee9-a7fd-0d84e038672a" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e47f8-7a98-71b7-bd4e-99edacd9e3ea" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e47f8-7a98-7c68-907c-89d70477aba0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e47f8-7a98-71b7-bd4e-99edacd9e3ea" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e47f8-7a98-7c68-907c-89d70477aba0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e47f8-7a98-7c68-907c-89d70477aba0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e47f8-7a98-7c68-907c-89d70477aba0" xlink:to="loc_us-gaap_SegmentDomain_019e47f8-7a98-7c68-907c-89d70477aba0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e47f8-7a98-721e-8148-83014fccf1c5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e47f8-7a98-7c68-907c-89d70477aba0" xlink:to="loc_us-gaap_SegmentDomain_019e47f8-7a98-721e-8148-83014fccf1c5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_five_ReportableSegmentMember_019e47f8-7a98-79e5-99a7-2579c8f398a4" xlink:href="five-20260502.xsd#five_ReportableSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e47f8-7a98-721e-8148-83014fccf1c5" xlink:to="loc_five_ReportableSegmentMember_019e47f8-7a98-79e5-99a7-2579c8f398a4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e47f8-7a98-7963-9d95-fd4768265a66" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e47f8-7a98-7ee9-a7fd-0d84e038672a" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e47f8-7a98-7963-9d95-fd4768265a66" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_019e47f8-7a98-70a3-8fc4-6f393330cbe5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e47f8-7a98-7ee9-a7fd-0d84e038672a" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_019e47f8-7a98-70a3-8fc4-6f393330cbe5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdvertisingExpense_019e47f8-7a98-78f3-80cc-2a85f36a2ecf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdvertisingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e47f8-7a98-7ee9-a7fd-0d84e038672a" xlink:to="loc_us-gaap_AdvertisingExpense_019e47f8-7a98-78f3-80cc-2a85f36a2ecf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019e47f8-7a98-7c60-aa12-fe5dfca671d3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e47f8-7a98-7ee9-a7fd-0d84e038672a" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019e47f8-7a98-7c60-aa12-fe5dfca671d3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_019e47f8-7a98-7203-8f76-08f3896f966f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e47f8-7a98-7ee9-a7fd-0d84e038672a" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_019e47f8-7a98-7203-8f76-08f3896f966f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_019e47f8-7a98-7a6d-937e-3ddb74019558" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e47f8-7a98-7ee9-a7fd-0d84e038672a" xlink:to="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_019e47f8-7a98-7a6d-937e-3ddb74019558" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019e47f8-7a98-79ad-94a5-3ddbe592cbb6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e47f8-7a98-7ee9-a7fd-0d84e038672a" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019e47f8-7a98-79ad-94a5-3ddbe592cbb6" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e47f8-7a98-7422-bf12-bc5f6372c4f2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e47f8-7a98-7ee9-a7fd-0d84e038672a" xlink:to="loc_us-gaap_NetIncomeLoss_019e47f8-7a98-7422-bf12-bc5f6372c4f2" xlink:type="arc" order="7"/>
  </link:definitionLink>
</link:linkbase>
