<XBRL>
<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <link:roleRef roleURI="http://www.daktronics.com/role/BasisOfPresentationAndSummaryOfCriticalAccountingPolicies" xlink:href="dakt-20171028.xsd#BasisOfPresentationAndSummaryOfCriticalAccountingPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/BasisOfPresentationAndSummaryOfCriticalAccountingPoliciesPolicies" xlink:href="dakt-20171028.xsd#BasisOfPresentationAndSummaryOfCriticalAccountingPoliciesPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/BasisOfPresentationAndSummaryOfCriticalAccountingPoliciesPrinciplesOfConsolidationDetails" xlink:href="dakt-20171028.xsd#BasisOfPresentationAndSummaryOfCriticalAccountingPoliciesPrinciplesOfConsolidationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/BusinessCombination" xlink:href="dakt-20171028.xsd#BusinessCombination" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/BusinessCombinationDetails" xlink:href="dakt-20171028.xsd#BusinessCombinationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/BusinessCombinationTables" xlink:href="dakt-20171028.xsd#BusinessCombinationTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/CommitmentsAndContingencies" xlink:href="dakt-20171028.xsd#CommitmentsAndContingencies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/CommitmentsAndContingenciesGuaranteesAndWarrantiesDetails" xlink:href="dakt-20171028.xsd#CommitmentsAndContingenciesGuaranteesAndWarrantiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/CommitmentsAndContingenciesLeasesDetails" xlink:href="dakt-20171028.xsd#CommitmentsAndContingenciesLeasesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/CommitmentsAndContingenciesPurchaseCommitmentsDetails" xlink:href="dakt-20171028.xsd#CommitmentsAndContingenciesPurchaseCommitmentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/CommitmentsAndContingenciesTables" xlink:href="dakt-20171028.xsd#CommitmentsAndContingenciesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ConsolidatedBalanceSheets" xlink:href="dakt-20171028.xsd#ConsolidatedBalanceSheets" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:href="dakt-20171028.xsd#ConsolidatedBalanceSheetsParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ConsolidatedStatementOfComprehensiveIncome" xlink:href="dakt-20171028.xsd#ConsolidatedStatementOfComprehensiveIncome" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ConsolidatedStatementsOfCashFlows" xlink:href="dakt-20171028.xsd#ConsolidatedStatementsOfCashFlows" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ConsolidatedStatementsOfOperations" xlink:href="dakt-20171028.xsd#ConsolidatedStatementsOfOperations" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/DerivativeFinancialInstruments" xlink:href="dakt-20171028.xsd#DerivativeFinancialInstruments" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/DerivativeFinancialInstrumentsDetails" xlink:href="dakt-20171028.xsd#DerivativeFinancialInstrumentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/DerivativeFinancialInstrumentsTables" xlink:href="dakt-20171028.xsd#DerivativeFinancialInstrumentsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/DocumentAndEntityInformation" xlink:href="dakt-20171028.xsd#DocumentAndEntityInformation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/EarningsPerShareEps" xlink:href="dakt-20171028.xsd#EarningsPerShareEps" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/EarningsPerShareEpsAntidilutiveSharesExcludedDetails" xlink:href="dakt-20171028.xsd#EarningsPerShareEpsAntidilutiveSharesExcludedDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/EarningsPerShareEpsReconciliationOfIncomeDetails" xlink:href="dakt-20171028.xsd#EarningsPerShareEpsReconciliationOfIncomeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/EarningsPerShareEpsTables" xlink:href="dakt-20171028.xsd#EarningsPerShareEpsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/FairValueMeasurement" xlink:href="dakt-20171028.xsd#FairValueMeasurement" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/FairValueMeasurementDetails" xlink:href="dakt-20171028.xsd#FairValueMeasurementDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/FairValueMeasurementRollForwardOfLevel3ContingentConsiderationLiabilityDetails" xlink:href="dakt-20171028.xsd#FairValueMeasurementRollForwardOfLevel3ContingentConsiderationLiabilityDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/FairValueMeasurementTables" xlink:href="dakt-20171028.xsd#FairValueMeasurementTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/Goodwill" xlink:href="dakt-20171028.xsd#Goodwill" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/GoodwillDetails" xlink:href="dakt-20171028.xsd#GoodwillDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/GoodwillTables" xlink:href="dakt-20171028.xsd#GoodwillTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/IncomeTaxes" xlink:href="dakt-20171028.xsd#IncomeTaxes" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/IncomeTaxesDetails" xlink:href="dakt-20171028.xsd#IncomeTaxesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/Inventories" xlink:href="dakt-20171028.xsd#Inventories" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/InventoriesDetails" xlink:href="dakt-20171028.xsd#InventoriesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/InventoriesTables" xlink:href="dakt-20171028.xsd#InventoriesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/MarketableSecurities" xlink:href="dakt-20171028.xsd#MarketableSecurities" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/MarketableSecuritiesAvailableForSaleByMaturityDateDetails" xlink:href="dakt-20171028.xsd#MarketableSecuritiesAvailableForSaleByMaturityDateDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/MarketableSecuritiesAvailableForSaleSecuritiesDetails" xlink:href="dakt-20171028.xsd#MarketableSecuritiesAvailableForSaleSecuritiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/MarketableSecuritiesTables" xlink:href="dakt-20171028.xsd#MarketableSecuritiesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/Receivables" xlink:href="dakt-20171028.xsd#Receivables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ReceivablesDetails" xlink:href="dakt-20171028.xsd#ReceivablesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/SaleOfNonDigitalDivisionDetails" xlink:href="dakt-20171028.xsd#SaleOfNonDigitalDivisionDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/SaleOfNonDigitalDivisionNotes" xlink:href="dakt-20171028.xsd#SaleOfNonDigitalDivisionNotes" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/SaleOfNonDigitalDivisionTables" xlink:href="dakt-20171028.xsd#SaleOfNonDigitalDivisionTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/SegmentDisclosure" xlink:href="dakt-20171028.xsd#SegmentDisclosure" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/SegmentDisclosureNetIncomeBySegmentDetails" xlink:href="dakt-20171028.xsd#SegmentDisclosureNetIncomeBySegmentDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/SegmentDisclosureNetSalesAndLongLivedAssetsByGeographicAreaDetails" xlink:href="dakt-20171028.xsd#SegmentDisclosureNetSalesAndLongLivedAssetsByGeographicAreaDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/SegmentDisclosureTables" xlink:href="dakt-20171028.xsd#SegmentDisclosureTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ShareRepurchaseProgramDetails" xlink:href="dakt-20171028.xsd#ShareRepurchaseProgramDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ShareRepurchaseProgramNotes" xlink:href="dakt-20171028.xsd#ShareRepurchaseProgramNotes" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ShareRepurchaseProgramTables" xlink:href="dakt-20171028.xsd#ShareRepurchaseProgramTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/SubsequentEvents" xlink:href="dakt-20171028.xsd#SubsequentEvents" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/SubsequentEventsDetails" xlink:href="dakt-20171028.xsd#SubsequentEventsDetails" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" xlink:type="simple" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/BasisOfPresentationAndSummaryOfCriticalAccountingPolicies" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/BasisOfPresentationAndSummaryOfCriticalAccountingPoliciesPolicies" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/BasisOfPresentationAndSummaryOfCriticalAccountingPoliciesPrinciplesOfConsolidationDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/BusinessCombination" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/BusinessCombinationDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_15D723E2EEFD5C73D90A7BAA584BAFFE" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_BB22464C5E6827BAAA3C7BAA584BB947" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_15D723E2EEFD5C73D90A7BAA584BAFFE" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_BB22464C5E6827BAAA3C7BAA584BB947" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_1DD7FACF416E8446164B7BAA584B15FE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_BB22464C5E6827BAAA3C7BAA584BB947" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_1DD7FACF416E8446164B7BAA584B15FE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_73435D249EA04EBECCEA7BAA584B0118_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_1DD7FACF416E8446164B7BAA584B15FE" xlink:to="loc_us-gaap_SegmentDomain_73435D249EA04EBECCEA7BAA584B0118_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_73435D249EA04EBECCEA7BAA584B0118" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_1DD7FACF416E8446164B7BAA584B15FE" xlink:to="loc_us-gaap_SegmentDomain_73435D249EA04EBECCEA7BAA584B0118" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_A090589F52FFEF33FB3A7BAA584BA695" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_BB22464C5E6827BAAA3C7BAA584BB947" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_A090589F52FFEF33FB3A7BAA584BA695" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_EBB5508287222C2B7B817BAA584B6A8B_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_A090589F52FFEF33FB3A7BAA584BA695" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_EBB5508287222C2B7B817BAA584B6A8B_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_EBB5508287222C2B7B817BAA584B6A8B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_A090589F52FFEF33FB3A7BAA584BA695" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_EBB5508287222C2B7B817BAA584B6A8B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_43505FEF13C1C12801667BAA584BC7AC" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_BB22464C5E6827BAAA3C7BAA584BB947" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_43505FEF13C1C12801667BAA584BC7AC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_0843BD27EE7CC4611EDB7BAA584B276B_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_43505FEF13C1C12801667BAA584BC7AC" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_0843BD27EE7CC4611EDB7BAA584B276B_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_0843BD27EE7CC4611EDB7BAA584B276B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_43505FEF13C1C12801667BAA584BC7AC" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_0843BD27EE7CC4611EDB7BAA584B276B" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.daktronics.com/role/BusinessCombinationTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/CommitmentsAndContingencies" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/CommitmentsAndContingenciesGuaranteesAndWarrantiesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GuaranteeObligationsLineItems" xlink:label="loc_us-gaap_GuaranteeObligationsLineItems_0EC1B3BB4E42DFB158C00E57ADD0A065" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfGuaranteeObligationsTable" xlink:label="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_A81A4A1453DB829747C00E57ADD0D1FE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_0EC1B3BB4E42DFB158C00E57ADD0A065" xlink:to="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_A81A4A1453DB829747C00E57ADD0D1FE" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProductOrServiceAxis" xlink:label="loc_us-gaap_ProductOrServiceAxis_33D067C82F5C176A758F0E57ADD01EE7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_A81A4A1453DB829747C00E57ADD0D1FE" xlink:to="loc_us-gaap_ProductOrServiceAxis_33D067C82F5C176A758F0E57ADD01EE7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProductsAndServicesDomain" xlink:label="loc_us-gaap_ProductsAndServicesDomain_79C6CD0F695E9BDDB0290E57ADD0ACBD_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ProductOrServiceAxis_33D067C82F5C176A758F0E57ADD01EE7" xlink:to="loc_us-gaap_ProductsAndServicesDomain_79C6CD0F695E9BDDB0290E57ADD0ACBD_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProductsAndServicesDomain" xlink:label="loc_us-gaap_ProductsAndServicesDomain_79C6CD0F695E9BDDB0290E57ADD0ACBD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ProductOrServiceAxis_33D067C82F5C176A758F0E57ADD01EE7" xlink:to="loc_us-gaap_ProductsAndServicesDomain_79C6CD0F695E9BDDB0290E57ADD0ACBD" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_OutofHomeProductApplicationMember" xlink:label="loc_dakt_OutofHomeProductApplicationMember_A328C84CC432CC587E130E57ADD07CFE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductsAndServicesDomain_79C6CD0F695E9BDDB0290E57ADD0ACBD" xlink:to="loc_dakt_OutofHomeProductApplicationMember_A328C84CC432CC587E130E57ADD07CFE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GuaranteeObligationsByNatureAxis" xlink:label="loc_us-gaap_GuaranteeObligationsByNatureAxis_650FC73C32AD00478DED0E57ADD0D781" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_A81A4A1453DB829747C00E57ADD0D1FE" xlink:to="loc_us-gaap_GuaranteeObligationsByNatureAxis_650FC73C32AD00478DED0E57ADD0D781" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_596B2AFDD91B5C0548EE0E57ADD02E53_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_650FC73C32AD00478DED0E57ADD0D781" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_596B2AFDD91B5C0548EE0E57ADD02E53_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_596B2AFDD91B5C0548EE0E57ADD02E53" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_650FC73C32AD00478DED0E57ADD0D781" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_596B2AFDD91B5C0548EE0E57ADD02E53" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PerformanceGuaranteeMember" xlink:label="loc_us-gaap_PerformanceGuaranteeMember_FD72A1DC153336550C630E57ADD09143" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_596B2AFDD91B5C0548EE0E57ADD02E53" xlink:to="loc_us-gaap_PerformanceGuaranteeMember_FD72A1DC153336550C630E57ADD09143" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_48329DD05AB9B828F33E0E57ADD0B6AA" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_A81A4A1453DB829747C00E57ADD0D1FE" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_48329DD05AB9B828F33E0E57ADD0B6AA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="loc_us-gaap_LossContingencyNatureDomain_374A806E1DB41BDB490F0E57ADD09968_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_48329DD05AB9B828F33E0E57ADD0B6AA" xlink:to="loc_us-gaap_LossContingencyNatureDomain_374A806E1DB41BDB490F0E57ADD09968_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="loc_us-gaap_LossContingencyNatureDomain_374A806E1DB41BDB490F0E57ADD09968" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_48329DD05AB9B828F33E0E57ADD0B6AA" xlink:to="loc_us-gaap_LossContingencyNatureDomain_374A806E1DB41BDB490F0E57ADD09968" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FinancialStandbyLetterOfCreditMember" xlink:label="loc_us-gaap_FinancialStandbyLetterOfCreditMember_C16A1FAF9D9DEF39C7B40E57ADD0B7EF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_374A806E1DB41BDB490F0E57ADD09968" xlink:to="loc_us-gaap_FinancialStandbyLetterOfCreditMember_C16A1FAF9D9DEF39C7B40E57ADD0B7EF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SuretyBondMember" xlink:label="loc_us-gaap_SuretyBondMember_E78F9EE8F7E7830E5A7B0E57ADD0DEDD" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_374A806E1DB41BDB490F0E57ADD09968" xlink:to="loc_us-gaap_SuretyBondMember_E78F9EE8F7E7830E5A7B0E57ADD0DEDD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_CBD3CF7B22A708FC95A80E57ADD03CAA" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_A81A4A1453DB829747C00E57ADD0D1FE" xlink:to="loc_us-gaap_RangeAxis_CBD3CF7B22A708FC95A80E57ADD03CAA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_5AB7CC9392D93C30DE870E57ADD0CCA6_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis_CBD3CF7B22A708FC95A80E57ADD03CAA" xlink:to="loc_us-gaap_RangeMember_5AB7CC9392D93C30DE870E57ADD0CCA6_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_5AB7CC9392D93C30DE870E57ADD0CCA6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis_CBD3CF7B22A708FC95A80E57ADD03CAA" xlink:to="loc_us-gaap_RangeMember_5AB7CC9392D93C30DE870E57ADD0CCA6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_757EF87E2258285085050E57ADD07D8E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_5AB7CC9392D93C30DE870E57ADD0CCA6" xlink:to="loc_us-gaap_MinimumMember_757EF87E2258285085050E57ADD07D8E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_AB0EE2908AD7617871370E57ADD05900" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_5AB7CC9392D93C30DE870E57ADD0CCA6" xlink:to="loc_us-gaap_MaximumMember_AB0EE2908AD7617871370E57ADD05900" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GuaranteesAbstract" xlink:label="loc_us-gaap_GuaranteesAbstract_D812E6BBF7638AD8C3140E57ADD051B7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_0EC1B3BB4E42DFB158C00E57ADD0A065" xlink:to="loc_us-gaap_GuaranteesAbstract_D812E6BBF7638AD8C3140E57ADD051B7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LossContingencyAccrualAtCarryingValue" xlink:label="loc_us-gaap_LossContingencyAccrualAtCarryingValue_F32E139F6CB586DE0C0A0E57ADD09788" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteesAbstract_D812E6BBF7638AD8C3140E57ADD051B7" xlink:to="loc_us-gaap_LossContingencyAccrualAtCarryingValue_F32E139F6CB586DE0C0A0E57ADD09788" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProductWarrantiesDisclosuresAbstract" xlink:label="loc_us-gaap_ProductWarrantiesDisclosuresAbstract_B9D88B75282B9D231A680E57ADD09146" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_0EC1B3BB4E42DFB158C00E57ADD0A065" xlink:to="loc_us-gaap_ProductWarrantiesDisclosuresAbstract_B9D88B75282B9D231A680E57ADD09146" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_ProductWarrantyAccrualStandardPartsWarrantyCoverageTerm" xlink:label="loc_dakt_ProductWarrantyAccrualStandardPartsWarrantyCoverageTerm_450FC1404A416F845FD30E57ADD0E470" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductWarrantiesDisclosuresAbstract_B9D88B75282B9D231A680E57ADD09146" xlink:to="loc_dakt_ProductWarrantyAccrualStandardPartsWarrantyCoverageTerm_450FC1404A416F845FD30E57ADD0E470" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_ProductWarrantyAccrualInstallationWarrantyCoverageTerm" xlink:label="loc_dakt_ProductWarrantyAccrualInstallationWarrantyCoverageTerm_AA53D4325D91C44F0F340E57ADD0B9DC" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductWarrantiesDisclosuresAbstract_B9D88B75282B9D231A680E57ADD09146" xlink:to="loc_dakt_ProductWarrantyAccrualInstallationWarrantyCoverageTerm_AA53D4325D91C44F0F340E57ADD0B9DC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease" xlink:label="loc_us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease_40C9F00F92D4FAD014C50E57ADD0601D" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductWarrantiesDisclosuresAbstract_B9D88B75282B9D231A680E57ADD09146" xlink:to="loc_us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease_40C9F00F92D4FAD014C50E57ADD0601D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProductWarrantyAccrual" xlink:label="loc_us-gaap_ProductWarrantyAccrual_C573274BE2E79994618C0E57ADD05147" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductWarrantiesDisclosuresAbstract_B9D88B75282B9D231A680E57ADD09146" xlink:to="loc_us-gaap_ProductWarrantyAccrual_C573274BE2E79994618C0E57ADD05147" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MovementInStandardProductWarrantyAccrualRollForward" xlink:label="loc_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_F481B922C78B8B7A66320E57ADD0CC0D" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductWarrantiesDisclosuresAbstract_B9D88B75282B9D231A680E57ADD09146" xlink:to="loc_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_F481B922C78B8B7A66320E57ADD0CC0D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProductWarrantyAccrualWarrantiesIssued" xlink:label="loc_us-gaap_ProductWarrantyAccrualWarrantiesIssued_32694941682788EF46B10E57ADD01815" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_F481B922C78B8B7A66320E57ADD0CC0D" xlink:to="loc_us-gaap_ProductWarrantyAccrualWarrantiesIssued_32694941682788EF46B10E57ADD01815" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProductWarrantyAccrualPayments" xlink:label="loc_us-gaap_ProductWarrantyAccrualPayments_4391F640CD4E00BAC3AE0E57ADD09E52" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_F481B922C78B8B7A66320E57ADD0CC0D" xlink:to="loc_us-gaap_ProductWarrantyAccrualPayments_4391F640CD4E00BAC3AE0E57ADD09E52" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.daktronics.com/role/CommitmentsAndContingenciesLeasesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasedAssetsLineItems" xlink:label="loc_us-gaap_OperatingLeasedAssetsLineItems_4A568F6726B0B83D2AB07BAA57D36A7A" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfOperatingLeasedAssetsTable" xlink:label="loc_us-gaap_ScheduleOfOperatingLeasedAssetsTable_5B9A48C99FA1535C264F7BAA57D33D87" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OperatingLeasedAssetsLineItems_4A568F6726B0B83D2AB07BAA57D36A7A" xlink:to="loc_us-gaap_ScheduleOfOperatingLeasedAssetsTable_5B9A48C99FA1535C264F7BAA57D33D87" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_LeasesPurchasePriceOptionAxis" xlink:label="loc_dakt_LeasesPurchasePriceOptionAxis_A2E88D98574011EB02CC7BAA57D30654" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfOperatingLeasedAssetsTable_5B9A48C99FA1535C264F7BAA57D33D87" xlink:to="loc_dakt_LeasesPurchasePriceOptionAxis_A2E88D98574011EB02CC7BAA57D30654" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_LeasesPurchasePriceOptionDomain" xlink:label="loc_dakt_LeasesPurchasePriceOptionDomain_2DA9968CE5F06F035DBF7BAA57D37A4D_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dakt_LeasesPurchasePriceOptionAxis_A2E88D98574011EB02CC7BAA57D30654" xlink:to="loc_dakt_LeasesPurchasePriceOptionDomain_2DA9968CE5F06F035DBF7BAA57D37A4D_default" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_LeasesPurchasePriceOptionDomain" xlink:label="loc_dakt_LeasesPurchasePriceOptionDomain_2DA9968CE5F06F035DBF7BAA57D37A4D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dakt_LeasesPurchasePriceOptionAxis_A2E88D98574011EB02CC7BAA57D30654" xlink:to="loc_dakt_LeasesPurchasePriceOptionDomain_2DA9968CE5F06F035DBF7BAA57D37A4D" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_March312017toMarch312022Member" xlink:label="loc_dakt_March312017toMarch312022Member_E2B0FCD2E6517443B8827BAA57D39958" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dakt_LeasesPurchasePriceOptionDomain_2DA9968CE5F06F035DBF7BAA57D37A4D" xlink:to="loc_dakt_March312017toMarch312022Member_E2B0FCD2E6517443B8827BAA57D39958" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_April12022toMarch312023Member" xlink:label="loc_dakt_April12022toMarch312023Member_1FDC0FEB719B5E3443D37BAA57D3700F" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dakt_LeasesPurchasePriceOptionDomain_2DA9968CE5F06F035DBF7BAA57D37A4D" xlink:to="loc_dakt_April12022toMarch312023Member_1FDC0FEB719B5E3443D37BAA57D3700F" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_April12023toMarch312024Member" xlink:label="loc_dakt_April12023toMarch312024Member_86C6BA3684AADE1D15757BAA57D3A9C2" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dakt_LeasesPurchasePriceOptionDomain_2DA9968CE5F06F035DBF7BAA57D37A4D" xlink:to="loc_dakt_April12023toMarch312024Member_86C6BA3684AADE1D15757BAA57D3A9C2" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_OperatingLeasesPurchaseOptionPrice" xlink:label="loc_dakt_OperatingLeasesPurchaseOptionPrice_56CBBC7833FE8B2CA76A7BAA57D3D677" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasedAssetsLineItems_4A568F6726B0B83D2AB07BAA57D36A7A" xlink:to="loc_dakt_OperatingLeasesPurchaseOptionPrice_56CBBC7833FE8B2CA76A7BAA57D3D677" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasesRentExpenseNet" xlink:label="loc_us-gaap_OperatingLeasesRentExpenseNet_C7E69994FF443E531B9E7BAA57D34887" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasedAssetsLineItems_4A568F6726B0B83D2AB07BAA57D36A7A" xlink:to="loc_us-gaap_OperatingLeasesRentExpenseNet_C7E69994FF443E531B9E7BAA57D34887" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_57D8B96A7492515AA8167BAA57D346F6" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasedAssetsLineItems_4A568F6726B0B83D2AB07BAA57D36A7A" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_57D8B96A7492515AA8167BAA57D346F6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsRemainderOfFiscalYear" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsRemainderOfFiscalYear_BEFEE14B40223C69A1047BAA57D35DE9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_57D8B96A7492515AA8167BAA57D346F6" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsRemainderOfFiscalYear_BEFEE14B40223C69A1047BAA57D35DE9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_E63272D03A82344112637BAA57D34019" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_57D8B96A7492515AA8167BAA57D346F6" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_E63272D03A82344112637BAA57D34019" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_6D7AE1DC21C93BB10B9B7BAA57D35D7C" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_57D8B96A7492515AA8167BAA57D346F6" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_6D7AE1DC21C93BB10B9B7BAA57D35D7C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_2B976C8159D237CB75157BAA57D34D20" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_57D8B96A7492515AA8167BAA57D346F6" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_2B976C8159D237CB75157BAA57D34D20" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_6E3B2A1F743A871F51317BAA57D3EBD1" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_57D8B96A7492515AA8167BAA57D346F6" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_6E3B2A1F743A871F51317BAA57D3EBD1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_69E2F58DCEBD488328007BAA57D3AE8F" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_57D8B96A7492515AA8167BAA57D346F6" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_69E2F58DCEBD488328007BAA57D3AE8F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_3CFF272E4D989731A31A7BAA57D3A72C" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_57D8B96A7492515AA8167BAA57D346F6" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_3CFF272E4D989731A31A7BAA57D3A72C" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.daktronics.com/role/CommitmentsAndContingenciesPurchaseCommitmentsDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/CommitmentsAndContingenciesTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/ConsolidatedBalanceSheets" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/ConsolidatedStatementOfComprehensiveIncome" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/ConsolidatedStatementsOfCashFlows" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_99F3BA42B81336F6BC92C6A9E1EE9C1A" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_620E785032F613509552C6A9E1EDE6D1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_99F3BA42B81336F6BC92C6A9E1EE9C1A" xlink:to="loc_us-gaap_StatementTable_620E785032F613509552C6A9E1EDE6D1" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_A7309B6AF4BE277E07DFC6A9E1EDDCDB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_620E785032F613509552C6A9E1EDE6D1" xlink:to="loc_us-gaap_StatementScenarioAxis_A7309B6AF4BE277E07DFC6A9E1EDDCDB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_254E9677F81D9C9E53CCC6A9E1EDA646_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementScenarioAxis_A7309B6AF4BE277E07DFC6A9E1EDDCDB" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_254E9677F81D9C9E53CCC6A9E1EDA646_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_254E9677F81D9C9E53CCC6A9E1EDA646" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementScenarioAxis_A7309B6AF4BE277E07DFC6A9E1EDDCDB" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_254E9677F81D9C9E53CCC6A9E1EDA646" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.daktronics.com/role/ConsolidatedStatementsOfOperations" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/DerivativeFinancialInstruments" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/DerivativeFinancialInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeLineItems" xlink:label="loc_us-gaap_DerivativeLineItems_485472ADABBCE637A984E4AA5EA6E0C3" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeTable" xlink:label="loc_us-gaap_DerivativeTable_86BD601CCFD3F9270D8EE4AA5E9E785D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_485472ADABBCE637A984E4AA5EA6E0C3" xlink:to="loc_us-gaap_DerivativeTable_86BD601CCFD3F9270D8EE4AA5E9E785D" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PositionAxis" xlink:label="loc_us-gaap_PositionAxis_5F03D95D4443945628FCE4B1BB18DBE9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_86BD601CCFD3F9270D8EE4AA5E9E785D" xlink:to="loc_us-gaap_PositionAxis_5F03D95D4443945628FCE4B1BB18DBE9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PositionDomain" xlink:label="loc_us-gaap_PositionDomain_1CBD295A582D75CD9827E4B1BB28C51D_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PositionAxis_5F03D95D4443945628FCE4B1BB18DBE9" xlink:to="loc_us-gaap_PositionDomain_1CBD295A582D75CD9827E4B1BB28C51D_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PositionDomain" xlink:label="loc_us-gaap_PositionDomain_1CBD295A582D75CD9827E4B1BB28C51D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PositionAxis_5F03D95D4443945628FCE4B1BB18DBE9" xlink:to="loc_us-gaap_PositionDomain_1CBD295A582D75CD9827E4B1BB28C51D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShortMember" xlink:label="loc_us-gaap_ShortMember_A01AB26A5BCB27B49365E4B20E43A86C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PositionDomain_1CBD295A582D75CD9827E4B1BB28C51D" xlink:to="loc_us-gaap_ShortMember_A01AB26A5BCB27B49365E4B20E43A86C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_B05292EA05EF57FFA8C8E4AA5E9F9E43" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_86BD601CCFD3F9270D8EE4AA5E9E785D" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_B05292EA05EF57FFA8C8E4AA5E9F9E43" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_04DA846A4E759FD40C09E4AA5E9F1E98_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_B05292EA05EF57FFA8C8E4AA5E9F9E43" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_04DA846A4E759FD40C09E4AA5E9F1E98_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_CCBEC75DECEEA58DA4F2E4AA5E9F0867" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_B05292EA05EF57FFA8C8E4AA5E9F9E43" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_CCBEC75DECEEA58DA4F2E4AA5E9F0867" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_04DA846A4E759FD40C09E4AA5E9F1E98" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_CCBEC75DECEEA58DA4F2E4AA5E9F0867" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_04DA846A4E759FD40C09E4AA5E9F1E98" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_1CE46DC0230C75ABBD98E4AA5E9FEC4E" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_CCBEC75DECEEA58DA4F2E4AA5E9F0867" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_1CE46DC0230C75ABBD98E4AA5E9FEC4E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_A7668523F0C577F47BD1E4AA5E9F514E" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_86BD601CCFD3F9270D8EE4AA5E9E785D" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_A7668523F0C577F47BD1E4AA5E9F514E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_BC746AA1AA1D7BF5DF81E4AA5E9F9743_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_A7668523F0C577F47BD1E4AA5E9F514E" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_BC746AA1AA1D7BF5DF81E4AA5E9F9743_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_BC746AA1AA1D7BF5DF81E4AA5E9F9743" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_A7668523F0C577F47BD1E4AA5E9F514E" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_BC746AA1AA1D7BF5DF81E4AA5E9F9743" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_UsdToAudMember" xlink:label="loc_dakt_UsdToAudMember_E95DCAC19307C9087993E4AA5E9F4D8E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_BC746AA1AA1D7BF5DF81E4AA5E9F9743" xlink:to="loc_dakt_UsdToAudMember_E95DCAC19307C9087993E4AA5E9F4D8E" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_UsdToCadMember" xlink:label="loc_dakt_UsdToCadMember_75599D22756C02B7F967E4AA5E9FAE1B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_BC746AA1AA1D7BF5DF81E4AA5E9F9743" xlink:to="loc_dakt_UsdToCadMember_75599D22756C02B7F967E4AA5E9FAE1B" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_UsdToGbpMemberMember" xlink:label="loc_dakt_UsdToGbpMemberMember_AA527584D8ADD17BD700E4AA5E9FE49C" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_BC746AA1AA1D7BF5DF81E4AA5E9F9743" xlink:to="loc_dakt_UsdToGbpMemberMember_AA527584D8ADD17BD700E4AA5E9FE49C" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_UsdToSgdMember" xlink:label="loc_dakt_UsdToSgdMember_993C8CC3F88836C60B76E4AA5EA090A1" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_BC746AA1AA1D7BF5DF81E4AA5E9F9743" xlink:to="loc_dakt_UsdToSgdMember_993C8CC3F88836C60B76E4AA5EA090A1" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_UsdToEurMember" xlink:label="loc_dakt_UsdToEurMember_4409DB34E1F6BC867F56E4AA5EA0B0F5" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_BC746AA1AA1D7BF5DF81E4AA5E9F9743" xlink:to="loc_dakt_UsdToEurMember_4409DB34E1F6BC867F56E4AA5EA0B0F5" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_USDtoCHFMemberMember" xlink:label="loc_dakt_USDtoCHFMemberMember_7F12FEEEA91265D960D8E4AA5EA045C3" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_BC746AA1AA1D7BF5DF81E4AA5E9F9743" xlink:to="loc_dakt_USDtoCHFMemberMember_7F12FEEEA91265D960D8E4AA5EA045C3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_78F1169091001EE2F3E7E4AA5EA02818" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_86BD601CCFD3F9270D8EE4AA5E9E785D" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_78F1169091001EE2F3E7E4AA5EA02818" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_6282B9592A8A5258615EE4AA5EA09A68_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_78F1169091001EE2F3E7E4AA5EA02818" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_6282B9592A8A5258615EE4AA5EA09A68_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_6282B9592A8A5258615EE4AA5EA09A68" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_78F1169091001EE2F3E7E4AA5EA02818" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_6282B9592A8A5258615EE4AA5EA09A68" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_EAB01DDE73B9455A5DBBE4AA5EA58AE1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_6282B9592A8A5258615EE4AA5EA09A68" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_EAB01DDE73B9455A5DBBE4AA5EA58AE1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_AFC4E53D8F62682882D2E4AA5EA51D6D" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_86BD601CCFD3F9270D8EE4AA5E9E785D" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_AFC4E53D8F62682882D2E4AA5EA51D6D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0887E6BEC8FD3AF28232E4AA5EA547D5_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_AFC4E53D8F62682882D2E4AA5EA51D6D" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0887E6BEC8FD3AF28232E4AA5EA547D5_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0887E6BEC8FD3AF28232E4AA5EA547D5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_AFC4E53D8F62682882D2E4AA5EA51D6D" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0887E6BEC8FD3AF28232E4AA5EA547D5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_5CEC98414F6D29EE64F9E4AA5EA6E612" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0887E6BEC8FD3AF28232E4AA5EA547D5" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_5CEC98414F6D29EE64F9E4AA5EA6E612" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_DerivativeNotionalAmount" xlink:label="loc_invest_DerivativeNotionalAmount_87348A502CE2DDE8AEB9E4AA5EA616A6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_485472ADABBCE637A984E4AA5EA6E0C3" xlink:to="loc_invest_DerivativeNotionalAmount_87348A502CE2DDE8AEB9E4AA5EA616A6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForeignCurrencyContractAssetFairValueDisclosure" xlink:label="loc_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_E5AE7C6D6058B7215036E4AA5EA6B53C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_485472ADABBCE637A984E4AA5EA6E0C3" xlink:to="loc_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_E5AE7C6D6058B7215036E4AA5EA6B53C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure" xlink:label="loc_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_C18C4919153D60179362E4AA5EA6A9B0" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_485472ADABBCE637A984E4AA5EA6E0C3" xlink:to="loc_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_C18C4919153D60179362E4AA5EA6A9B0" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.daktronics.com/role/DerivativeFinancialInstrumentsTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/DocumentAndEntityInformation" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityInformationLineItems" xlink:label="loc_dei_EntityInformationLineItems_3EC86EEC173A473B566B7BAA57F16032" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntitiesTable" xlink:label="loc_dei_EntitiesTable_1DEB7E25FCAC70097A8D7BAA57F12789" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_EntityInformationLineItems_3EC86EEC173A473B566B7BAA57F16032" xlink:to="loc_dei_EntitiesTable_1DEB7E25FCAC70097A8D7BAA57F12789" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_F7C86BCC8308FCE4041E7BAA57F1C783" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_EntitiesTable_1DEB7E25FCAC70097A8D7BAA57F12789" xlink:to="loc_dei_LegalEntityAxis_F7C86BCC8308FCE4041E7BAA57F1C783" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_65A5711132AD52D78D807BAA57F10810_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_F7C86BCC8308FCE4041E7BAA57F1C783" xlink:to="loc_dei_EntityDomain_65A5711132AD52D78D807BAA57F10810_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_65A5711132AD52D78D807BAA57F10810" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_F7C86BCC8308FCE4041E7BAA57F1C783" xlink:to="loc_dei_EntityDomain_65A5711132AD52D78D807BAA57F10810" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_D3BEF7C012A7955590C17BAA57F15BDC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_3EC86EEC173A473B566B7BAA57F16032" xlink:to="loc_dei_EntityRegistrantName_D3BEF7C012A7955590C17BAA57F15BDC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="loc_dei_EntityCentralIndexKey_D770F83F28A9E2485E1B7BAA57F17706" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_3EC86EEC173A473B566B7BAA57F16032" xlink:to="loc_dei_EntityCentralIndexKey_D770F83F28A9E2485E1B7BAA57F17706" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_dei_CurrentFiscalYearEndDate_BD6995DFF341546C2B7F7BAA57F15DD2" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_3EC86EEC173A473B566B7BAA57F16032" xlink:to="loc_dei_CurrentFiscalYearEndDate_BD6995DFF341546C2B7F7BAA57F15DD2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="loc_dei_EntityWellKnownSeasonedIssuer_343800E13C52C64F34067BAA57F1A03A" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_3EC86EEC173A473B566B7BAA57F16032" xlink:to="loc_dei_EntityWellKnownSeasonedIssuer_343800E13C52C64F34067BAA57F1A03A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityVoluntaryFilers" xlink:label="loc_dei_EntityVoluntaryFilers_02B7A1D9F5784723CF317BAA57F1BFF2" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_3EC86EEC173A473B566B7BAA57F16032" xlink:to="loc_dei_EntityVoluntaryFilers_02B7A1D9F5784723CF317BAA57F1BFF2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:label="loc_dei_EntityCurrentReportingStatus_7617AEAA4B88333A31807BAA57F13845" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_3EC86EEC173A473B566B7BAA57F16032" xlink:to="loc_dei_EntityCurrentReportingStatus_7617AEAA4B88333A31807BAA57F13845" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityFilerCategory" xlink:label="loc_dei_EntityFilerCategory_7EA551765C5BF4DCED8A7BAA57F15F09" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_3EC86EEC173A473B566B7BAA57F16032" xlink:to="loc_dei_EntityFilerCategory_7EA551765C5BF4DCED8A7BAA57F15F09" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_049C8953E432790921FE7BAA57F1FC2E" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_3EC86EEC173A473B566B7BAA57F16032" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_049C8953E432790921FE7BAA57F1FC2E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="loc_dei_DocumentFiscalYearFocus_FD5172633AD2896958807BAA57F11BB9" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_3EC86EEC173A473B566B7BAA57F16032" xlink:to="loc_dei_DocumentFiscalYearFocus_FD5172633AD2896958807BAA57F11BB9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="loc_dei_DocumentFiscalPeriodFocus_051C1E66C5B5C58270097BAA57F15C7E" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_3EC86EEC173A473B566B7BAA57F16032" xlink:to="loc_dei_DocumentFiscalPeriodFocus_051C1E66C5B5C58270097BAA57F15C7E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentType" xlink:label="loc_dei_DocumentType_2735B6EC6EED2EA2ED507BAA57F1F097" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_3EC86EEC173A473B566B7BAA57F16032" xlink:to="loc_dei_DocumentType_2735B6EC6EED2EA2ED507BAA57F1F097" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_AmendmentFlag" xlink:label="loc_dei_AmendmentFlag_70794739A0A1E4B829787BAA57F18029" xlink:type="locator" />
    <link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_3EC86EEC173A473B566B7BAA57F16032" xlink:to="loc_dei_AmendmentFlag_70794739A0A1E4B829787BAA57F18029" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_dei_DocumentPeriodEndDate_73D0564E973F75ED96DE7BAA57F179AE" xlink:type="locator" />
    <link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_3EC86EEC173A473B566B7BAA57F16032" xlink:to="loc_dei_DocumentPeriodEndDate_73D0564E973F75ED96DE7BAA57F179AE" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.daktronics.com/role/EarningsPerShareEps" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/EarningsPerShareEpsAntidilutiveSharesExcludedDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_17686922592D63D67AD5C6BCD4DCAD14" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_20B9D15890210A48A8CCC6BCD4DC8073" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_17686922592D63D67AD5C6BCD4DCAD14" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_20B9D15890210A48A8CCC6BCD4DC8073" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_0B2C3F874CCE4AA928DBC6BCD4DC35F9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_20B9D15890210A48A8CCC6BCD4DC8073" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_0B2C3F874CCE4AA928DBC6BCD4DC35F9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_12A35FF19A61397E000AC6BCD4DCC2B4_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_0B2C3F874CCE4AA928DBC6BCD4DC35F9" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_12A35FF19A61397E000AC6BCD4DCC2B4_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_12A35FF19A61397E000AC6BCD4DCC2B4" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_0B2C3F874CCE4AA928DBC6BCD4DC35F9" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_12A35FF19A61397E000AC6BCD4DCC2B4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember_57560DC9343E262AA0FCC6BCD4DCCD09" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_12A35FF19A61397E000AC6BCD4DCC2B4" xlink:to="loc_us-gaap_EmployeeStockOptionMember_57560DC9343E262AA0FCC6BCD4DCCD09" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_8F319661D8B0240592E2C6BCD4DC2334" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_17686922592D63D67AD5C6BCD4DCAD14" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_8F319661D8B0240592E2C6BCD4DC2334" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareWeightedAverageExercisePrice" xlink:label="loc_dakt_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareWeightedAverageExercisePrice_A4DC7058C3C1D2438836C6BCD4DC8511" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_17686922592D63D67AD5C6BCD4DCAD14" xlink:to="loc_dakt_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareWeightedAverageExercisePrice_A4DC7058C3C1D2438836C6BCD4DC8511" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.daktronics.com/role/EarningsPerShareEpsReconciliationOfIncomeDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/EarningsPerShareEpsTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/FairValueMeasurement" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/FairValueMeasurementDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_F5821232280F0AA7482F7BAA582DD224" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_43937862B8884B65F92B7BAA582DF701" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_F5821232280F0AA7482F7BAA582DD224" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_43937862B8884B65F92B7BAA582DF701" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_231DFC9EC58F39D369CD7BAA582D692E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_43937862B8884B65F92B7BAA582DF701" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_231DFC9EC58F39D369CD7BAA582D692E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_7CEA88938A7E85F7EEB87BAA582D027E_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_231DFC9EC58F39D369CD7BAA582D692E" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_7CEA88938A7E85F7EEB87BAA582D027E_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_13A8C0153649B7DC48807BAA582D800F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_231DFC9EC58F39D369CD7BAA582D692E" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_13A8C0153649B7DC48807BAA582D800F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_7CEA88938A7E85F7EEB87BAA582D027E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_13A8C0153649B7DC48807BAA582D800F" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_7CEA88938A7E85F7EEB87BAA582D027E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_24CF5BF875BBD88E4C607BAA582D6718" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_13A8C0153649B7DC48807BAA582D800F" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_24CF5BF875BBD88E4C607BAA582D6718" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_FD414966C9ACD5AFB1697BAA582D03F9" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_13A8C0153649B7DC48807BAA582D800F" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_FD414966C9ACD5AFB1697BAA582D03F9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_6D32FBBC0DF818A8DDEB7BAA582DB7BE" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_43937862B8884B65F92B7BAA582DF701" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_6D32FBBC0DF818A8DDEB7BAA582DB7BE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_01FB05B56DAD921AB0A37BAA582DFDF5_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_6D32FBBC0DF818A8DDEB7BAA582DB7BE" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_01FB05B56DAD921AB0A37BAA582DFDF5_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_01FB05B56DAD921AB0A37BAA582DFDF5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_6D32FBBC0DF818A8DDEB7BAA582DB7BE" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_01FB05B56DAD921AB0A37BAA582DFDF5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_E44EEBF601D0FBDAEEB67BAA582D55D9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_01FB05B56DAD921AB0A37BAA582DFDF5" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_E44EEBF601D0FBDAEEB67BAA582D55D9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_F5B95E100DAD08BFDDAD7BAA582DF965" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_43937862B8884B65F92B7BAA582DF701" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_F5B95E100DAD08BFDDAD7BAA582DF965" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_129AB0D705D3BDDAE8F47BAA582DC823_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_F5B95E100DAD08BFDDAD7BAA582DF965" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_129AB0D705D3BDDAE8F47BAA582DC823_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_129AB0D705D3BDDAE8F47BAA582DC823" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_F5B95E100DAD08BFDDAD7BAA582DF965" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_129AB0D705D3BDDAE8F47BAA582DC823" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_3FB12DFE41F92F55E1717BAA582D14AD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_129AB0D705D3BDDAE8F47BAA582DC823" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_3FB12DFE41F92F55E1717BAA582D14AD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_4E081DD0D99DD5377A377BAA582D179D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_129AB0D705D3BDDAE8F47BAA582DC823" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_4E081DD0D99DD5377A377BAA582D179D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_3E7C3F57D15CDED03B167BAA582D5AE5" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_129AB0D705D3BDDAE8F47BAA582DC823" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_3E7C3F57D15CDED03B167BAA582D5AE5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis" xlink:label="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_759AB872DD5770EFC94C7BAA582DB216" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_43937862B8884B65F92B7BAA582DF701" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_759AB872DD5770EFC94C7BAA582DB216" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain" xlink:label="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_39BA4A413C7E0A377B357BAA582D0183_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_759AB872DD5770EFC94C7BAA582DB216" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_39BA4A413C7E0A377B357BAA582D0183_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain" xlink:label="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_39BA4A413C7E0A377B357BAA582D0183" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_759AB872DD5770EFC94C7BAA582DB216" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_39BA4A413C7E0A377B357BAA582D0183" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CertificatesOfDepositMember" xlink:label="loc_us-gaap_CertificatesOfDepositMember_CCA41F81084DA489BEBF7BAA582D054F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_39BA4A413C7E0A377B357BAA582D0183" xlink:to="loc_us-gaap_CertificatesOfDepositMember_CCA41F81084DA489BEBF7BAA582D054F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_C71500ACC5BA46CE25297BAA582D4017" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_39BA4A413C7E0A377B357BAA582D0183" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_C71500ACC5BA46CE25297BAA582D4017" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember" xlink:label="loc_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_969778575BCDF616FD097BAA582D4ACD" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_39BA4A413C7E0A377B357BAA582D0183" xlink:to="loc_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_969778575BCDF616FD097BAA582D4ACD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_94CFA1B83840536ED0D37BAA582D5BAE" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_39BA4A413C7E0A377B357BAA582D0183" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_94CFA1B83840536ED0D37BAA582D5BAE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_6079BEB445B191DD19787BAA582DB9D9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_F5821232280F0AA7482F7BAA582DD224" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_6079BEB445B191DD19787BAA582DB9D9" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_RestrictedCashAndCashEquivalentsFairValueDisclosure" xlink:label="loc_dakt_RestrictedCashAndCashEquivalentsFairValueDisclosure_954631D6C3E1B2719ACF7BAA582D0781" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_F5821232280F0AA7482F7BAA582DD224" xlink:to="loc_dakt_RestrictedCashAndCashEquivalentsFairValueDisclosure_954631D6C3E1B2719ACF7BAA582D0781" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecurities_C67A5A77A2F6B30D5B697BAA582DC205" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_F5821232280F0AA7482F7BAA582DD224" xlink:to="loc_us-gaap_AvailableForSaleSecurities_C67A5A77A2F6B30D5B697BAA582DC205" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForeignCurrencyContractAssetFairValueDisclosure" xlink:label="loc_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_D77E2D21ACE33AEC3D187BAA582D0878" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_F5821232280F0AA7482F7BAA582DD224" xlink:to="loc_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_D77E2D21ACE33AEC3D187BAA582D0878" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure" xlink:label="loc_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_A7F1A613648F7EFB53977BAA582D8A13" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_F5821232280F0AA7482F7BAA582DD224" xlink:to="loc_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_A7F1A613648F7EFB53977BAA582D8A13" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_294BC95A1AFC37BCA4567BAA582D6E55" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_F5821232280F0AA7482F7BAA582DD224" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_294BC95A1AFC37BCA4567BAA582D6E55" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueNetAssetLiability" xlink:label="loc_us-gaap_FairValueNetAssetLiability_F4D67A77A64297082BED7BAA582D2A10" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_F5821232280F0AA7482F7BAA582DD224" xlink:to="loc_us-gaap_FairValueNetAssetLiability_F4D67A77A64297082BED7BAA582D2A10" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.daktronics.com/role/FairValueMeasurementRollForwardOfLevel3ContingentConsiderationLiabilityDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_281A9EEF496CDDBE5E5B10C89258A6EF" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_95D37A7FF89C72A3E51210C892574BD0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_281A9EEF496CDDBE5E5B10C89258A6EF" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_95D37A7FF89C72A3E51210C892574BD0" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_A7267E869F9CAE9987D810C89257AA03" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_95D37A7FF89C72A3E51210C892574BD0" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_A7267E869F9CAE9987D810C89257AA03" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_563A1B3ECB9E6F50D9F210C89257A39E_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_A7267E869F9CAE9987D810C89257AA03" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_563A1B3ECB9E6F50D9F210C89257A39E_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_E3837A569845A0924C1610C89257B529" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_A7267E869F9CAE9987D810C89257AA03" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_E3837A569845A0924C1610C89257B529" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_563A1B3ECB9E6F50D9F210C89257A39E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_E3837A569845A0924C1610C89257B529" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_563A1B3ECB9E6F50D9F210C89257A39E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_C3CBEA3A0B3B5E8C87A310C892572388" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_E3837A569845A0924C1610C89257B529" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_C3CBEA3A0B3B5E8C87A310C892572388" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_E2ADF74A398077DFFE2B10C89257F768" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_95D37A7FF89C72A3E51210C892574BD0" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_E2ADF74A398077DFFE2B10C89257F768" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2DC67F5459B422A6362710C89258A2CE_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_E2ADF74A398077DFFE2B10C89257F768" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2DC67F5459B422A6362710C89258A2CE_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2DC67F5459B422A6362710C89258A2CE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_E2ADF74A398077DFFE2B10C89257F768" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2DC67F5459B422A6362710C89258A2CE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_6D5FB88E32FE6AA819F510C892580264" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_2DC67F5459B422A6362710C89258A2CE" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_6D5FB88E32FE6AA819F510C892580264" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_C9FE8FB2628B99680C2F10C8925808F7" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_95D37A7FF89C72A3E51210C892574BD0" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_C9FE8FB2628B99680C2F10C8925808F7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_47E30A6D09646988D34310C892584ADC_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_C9FE8FB2628B99680C2F10C8925808F7" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_47E30A6D09646988D34310C892584ADC_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_47E30A6D09646988D34310C892584ADC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_C9FE8FB2628B99680C2F10C8925808F7" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_47E30A6D09646988D34310C892584ADC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_AC605017E816C176859910C8925813ED" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_47E30A6D09646988D34310C892584ADC" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_AC605017E816C176859910C8925813ED" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByLiabilityClassAxis" xlink:label="loc_us-gaap_FairValueByLiabilityClassAxis_7724D654BAE6ED21E39810C892585CA3" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_95D37A7FF89C72A3E51210C892574BD0" xlink:to="loc_us-gaap_FairValueByLiabilityClassAxis_7724D654BAE6ED21E39810C892585CA3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_DA21FDD98F3DB4AAADF610C89258FD4C_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_7724D654BAE6ED21E39810C892585CA3" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_DA21FDD98F3DB4AAADF610C89258FD4C_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_DA21FDD98F3DB4AAADF610C89258FD4C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_7724D654BAE6ED21E39810C892585CA3" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_DA21FDD98F3DB4AAADF610C89258FD4C" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_ContingentConsiderationLiabilityMember" xlink:label="loc_dakt_ContingentConsiderationLiabilityMember_1171D85361259DD6BACF10C89258AADE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_DA21FDD98F3DB4AAADF610C89258FD4C" xlink:to="loc_dakt_ContingentConsiderationLiabilityMember_1171D85361259DD6BACF10C89258AADE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_60BC76378EBE0BBD74D310C89258FB8B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_281A9EEF496CDDBE5E5B10C89258A6EF" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_60BC76378EBE0BBD74D310C89258FB8B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements_066B8156B652250E7A9F10C89258C3B7" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_281A9EEF496CDDBE5E5B10C89258A6EF" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements_066B8156B652250E7A9F10C89258C3B7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_1ACE7A1D55D0633B05BB10C892589AB5" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_281A9EEF496CDDBE5E5B10C89258A6EF" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_1ACE7A1D55D0633B05BB10C892589AB5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome_B67EA0A799503224551C10C892581B30" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_281A9EEF496CDDBE5E5B10C89258A6EF" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome_B67EA0A799503224551C10C892581B30" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.daktronics.com/role/FairValueMeasurementTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/Goodwill" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/GoodwillDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GoodwillLineItems" xlink:label="loc_us-gaap_GoodwillLineItems_482A78EC894B9579F4E10CF1B1D29026" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_E192121A5414818D11D10CF1B1D2FD6D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_482A78EC894B9579F4E10CF1B1D29026" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_E192121A5414818D11D10CF1B1D2FD6D" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_ECEA5063E24BA17114A50CF1B1D2A0E4" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_E192121A5414818D11D10CF1B1D2FD6D" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_ECEA5063E24BA17114A50CF1B1D2A0E4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_DED79AF706F28B9B38880CF1B1D2DAA7_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_ECEA5063E24BA17114A50CF1B1D2A0E4" xlink:to="loc_us-gaap_SegmentDomain_DED79AF706F28B9B38880CF1B1D2DAA7_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_DED79AF706F28B9B38880CF1B1D2DAA7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_ECEA5063E24BA17114A50CF1B1D2A0E4" xlink:to="loc_us-gaap_SegmentDomain_DED79AF706F28B9B38880CF1B1D2DAA7" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_LiveEventsMember" xlink:label="loc_dakt_LiveEventsMember_CED88AB5BA644A32E05D0CF1B1D21DB2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_DED79AF706F28B9B38880CF1B1D2DAA7" xlink:to="loc_dakt_LiveEventsMember_CED88AB5BA644A32E05D0CF1B1D21DB2" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_CommericalMember" xlink:label="loc_dakt_CommericalMember_27285B619DEB8276D9B70CF1B1D2470B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_DED79AF706F28B9B38880CF1B1D2DAA7" xlink:to="loc_dakt_CommericalMember_27285B619DEB8276D9B70CF1B1D2470B" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_TransportationMember" xlink:label="loc_dakt_TransportationMember_9822ECDBE8A541EB58C10CF1B1D2A9B7" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_DED79AF706F28B9B38880CF1B1D2DAA7" xlink:to="loc_dakt_TransportationMember_9822ECDBE8A541EB58C10CF1B1D2A9B7" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_InternationalMember" xlink:label="loc_dakt_InternationalMember_238FEE591EF8E578CD7F0CF1B1D2F352" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_DED79AF706F28B9B38880CF1B1D2DAA7" xlink:to="loc_dakt_InternationalMember_238FEE591EF8E578CD7F0CF1B1D2F352" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GoodwillRollForward" xlink:label="loc_us-gaap_GoodwillRollForward_4C6E30880394EDBA9A9C0CF1B1D3FBBB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_482A78EC894B9579F4E10CF1B1D29026" xlink:to="loc_us-gaap_GoodwillRollForward_4C6E30880394EDBA9A9C0CF1B1D3FBBB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_A02C196AF29EFD79B8EB0CF1B1D3CA6B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_4C6E30880394EDBA9A9C0CF1B1D3FBBB" xlink:to="loc_us-gaap_Goodwill_A02C196AF29EFD79B8EB0CF1B1D3CA6B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GoodwillForeignCurrencyTranslationGainLoss" xlink:label="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_5BAB0B22652150DDC4E10CF1B1D38278" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_4C6E30880394EDBA9A9C0CF1B1D3FBBB" xlink:to="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_5BAB0B22652150DDC4E10CF1B1D38278" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.daktronics.com/role/GoodwillTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/IncomeTaxes" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/IncomeTaxesDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/Inventories" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/InventoriesDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/InventoriesTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/MarketableSecurities" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/MarketableSecuritiesAvailableForSaleByMaturityDateDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_447BB09457DC40A1A4AD7BAA58550814" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_45B8BDB8A9C05A4E2E9F7BAA584B2A78" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_447BB09457DC40A1A4AD7BAA58550814" xlink:to="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_45B8BDB8A9C05A4E2E9F7BAA584B2A78" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis" xlink:label="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_1EDA0A30FD1F5B02C8737BAA584B7AA9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_45B8BDB8A9C05A4E2E9F7BAA584B2A78" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_1EDA0A30FD1F5B02C8737BAA584B7AA9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain" xlink:label="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_0864399FFD723855871E7BAA584B258A_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_1EDA0A30FD1F5B02C8737BAA584B7AA9" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_0864399FFD723855871E7BAA584B258A_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain" xlink:label="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_0864399FFD723855871E7BAA584B258A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_1EDA0A30FD1F5B02C8737BAA584B7AA9" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_0864399FFD723855871E7BAA584B258A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CertificatesOfDepositMember" xlink:label="loc_us-gaap_CertificatesOfDepositMember_CF087A6B0A52E874F5EF7BAA584BC454" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_0864399FFD723855871E7BAA584B258A" xlink:to="loc_us-gaap_CertificatesOfDepositMember_CF087A6B0A52E874F5EF7BAA584BC454" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_12AD9F8AA93CCDD929D17BAA5855EECC" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_0864399FFD723855871E7BAA584B258A" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_12AD9F8AA93CCDD929D17BAA5855EECC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember" xlink:label="loc_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_3A66FB19E2803E4C30797BAA5855E792" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_0864399FFD723855871E7BAA584B258A" xlink:to="loc_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_3A66FB19E2803E4C30797BAA5855E792" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_A9DBD7D71C9D9F6046B17BAA585548F8" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_0864399FFD723855871E7BAA584B258A" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_A9DBD7D71C9D9F6046B17BAA585548F8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_12C025D39CE28668A2977BAA5855D387" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_447BB09457DC40A1A4AD7BAA58550814" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_12C025D39CE28668A2977BAA5855D387" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_17A0ECE137EA8E4120037BAA58557BFF" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_447BB09457DC40A1A4AD7BAA58550814" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_17A0ECE137EA8E4120037BAA58557BFF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_681E03A67D9B6ED6A9257BAA58550C0E" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_447BB09457DC40A1A4AD7BAA58550814" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_681E03A67D9B6ED6A9257BAA58550C0E" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.daktronics.com/role/MarketableSecuritiesAvailableForSaleSecuritiesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_E3C4B4B00CDB43C43D867BAA580F933E" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_6E823521ECABF0083ABE7BAA580F6735" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_E3C4B4B00CDB43C43D867BAA580F933E" xlink:to="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_6E823521ECABF0083ABE7BAA580F6735" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis" xlink:label="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_831328A081B4B62BC05F7BAA580F510A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_6E823521ECABF0083ABE7BAA580F6735" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_831328A081B4B62BC05F7BAA580F510A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain" xlink:label="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_507A10554748DD967CC07BAA580FB016_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_831328A081B4B62BC05F7BAA580F510A" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_507A10554748DD967CC07BAA580FB016_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain" xlink:label="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_507A10554748DD967CC07BAA580FB016" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_831328A081B4B62BC05F7BAA580F510A" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_507A10554748DD967CC07BAA580FB016" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CertificatesOfDepositMember" xlink:label="loc_us-gaap_CertificatesOfDepositMember_FE7B3EDAF6C41EF05B197BAA580FFDED" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_507A10554748DD967CC07BAA580FB016" xlink:to="loc_us-gaap_CertificatesOfDepositMember_FE7B3EDAF6C41EF05B197BAA580FFDED" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_E94C0767605E85C41BB77BAA580F696C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_507A10554748DD967CC07BAA580FB016" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_E94C0767605E85C41BB77BAA580F696C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember" xlink:label="loc_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_2A9F689530B4127DCCCF7BAA580F83BF" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_507A10554748DD967CC07BAA580FB016" xlink:to="loc_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_2A9F689530B4127DCCCF7BAA580F83BF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_79230BAE6855AEFCC4AF7BAA580F32B1" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_507A10554748DD967CC07BAA580FB016" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_79230BAE6855AEFCC4AF7BAA580F32B1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_1EBE9C7C12AD6A99B1F47BAA580F8473" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_E3C4B4B00CDB43C43D867BAA580F933E" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_1EBE9C7C12AD6A99B1F47BAA580F8473" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_67E92E5F563233EE051B7BAA580F0FB3" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_E3C4B4B00CDB43C43D867BAA580F933E" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_67E92E5F563233EE051B7BAA580F0FB3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_5706560C7D6A32A315A37BAA580FBAE3" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_E3C4B4B00CDB43C43D867BAA580F933E" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_5706560C7D6A32A315A37BAA580FBAE3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecurities_3F1DEC8B11C07F237BB37BAA580FA911" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_E3C4B4B00CDB43C43D867BAA580F933E" xlink:to="loc_us-gaap_AvailableForSaleSecurities_3F1DEC8B11C07F237BB37BAA580FA911" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.daktronics.com/role/MarketableSecuritiesTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/Receivables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/ReceivablesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_EEE4D9452114D69F8D687BAA57F1D613" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_E6C3346BE43864A6BE577BAA57F15093" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_EEE4D9452114D69F8D687BAA57F1D613" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_E6C3346BE43864A6BE577BAA57F15093" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_761EB7DF87993BC6718D7BAA57F12B71" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_E6C3346BE43864A6BE577BAA57F15093" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_761EB7DF87993BC6718D7BAA57F12B71" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReceivableTypeDomain" xlink:label="loc_us-gaap_ReceivableTypeDomain_0CEC45A05BC8B53AAE727BAA57F1C74B_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_761EB7DF87993BC6718D7BAA57F12B71" xlink:to="loc_us-gaap_ReceivableTypeDomain_0CEC45A05BC8B53AAE727BAA57F1C74B_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReceivableTypeDomain" xlink:label="loc_us-gaap_ReceivableTypeDomain_0CEC45A05BC8B53AAE727BAA57F1C74B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_761EB7DF87993BC6718D7BAA57F12B71" xlink:to="loc_us-gaap_ReceivableTypeDomain_0CEC45A05BC8B53AAE727BAA57F1C74B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FinanceReceivablesMember" xlink:label="loc_us-gaap_FinanceReceivablesMember_2AF529C0F61581C6AB407BAA57F1D586" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_0CEC45A05BC8B53AAE727BAA57F1C74B" xlink:to="loc_us-gaap_FinanceReceivablesMember_2AF529C0F61581C6AB407BAA57F1D586" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_9CB3210C5669087D0BA17BAA57F1D5EC" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_E6C3346BE43864A6BE577BAA57F15093" xlink:to="loc_us-gaap_RangeAxis_9CB3210C5669087D0BA17BAA57F1D5EC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_9FD1A3F3EC15BD4E918F7BAA57F16CAD_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis_9CB3210C5669087D0BA17BAA57F1D5EC" xlink:to="loc_us-gaap_RangeMember_9FD1A3F3EC15BD4E918F7BAA57F16CAD_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_9FD1A3F3EC15BD4E918F7BAA57F16CAD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis_9CB3210C5669087D0BA17BAA57F1D5EC" xlink:to="loc_us-gaap_RangeMember_9FD1A3F3EC15BD4E918F7BAA57F16CAD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_F4AD744893558A76451E7BAA57F1483C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_9FD1A3F3EC15BD4E918F7BAA57F16CAD" xlink:to="loc_us-gaap_MinimumMember_F4AD744893558A76451E7BAA57F1483C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_8B7BBC674225BAA7164F7BAA57F153B7" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_9FD1A3F3EC15BD4E918F7BAA57F16CAD" xlink:to="loc_us-gaap_MaximumMember_8B7BBC674225BAA7164F7BAA57F153B7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_5A3ED882581BAD99B7597BAA57F184FD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_EEE4D9452114D69F8D687BAA57F1D613" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_5A3ED882581BAD99B7597BAA57F184FD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NotesReceivableNet" xlink:label="loc_us-gaap_NotesReceivableNet_98D41D082CB8E479709D7BAA57F11ECC" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_EEE4D9452114D69F8D687BAA57F1D613" xlink:to="loc_us-gaap_NotesReceivableNet_98D41D082CB8E479709D7BAA57F11ECC" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_LoansAndLeasesReceivableInterestRate" xlink:label="loc_dakt_LoansAndLeasesReceivableInterestRate_18E25052D501E211AF207BAA57F18292" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_EEE4D9452114D69F8D687BAA57F1D613" xlink:to="loc_dakt_LoansAndLeasesReceivableInterestRate_18E25052D501E211AF207BAA57F18292" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NotesReceivableGross" xlink:label="loc_us-gaap_NotesReceivableGross_392F2ADFAD9BC3DAF6F77BAA57F1D86A" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_EEE4D9452114D69F8D687BAA57F1D613" xlink:to="loc_us-gaap_NotesReceivableGross_392F2ADFAD9BC3DAF6F77BAA57F1D86A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ContractReceivableRetainageDueOneYearOrLess" xlink:label="loc_us-gaap_ContractReceivableRetainageDueOneYearOrLess_83402420AE19CE62582B7BAA57F1910A" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_EEE4D9452114D69F8D687BAA57F1D613" xlink:to="loc_us-gaap_ContractReceivableRetainageDueOneYearOrLess_83402420AE19CE62582B7BAA57F1910A" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.daktronics.com/role/SaleOfNonDigitalDivisionDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_AAD56DB127242A4F769CDFED53603C35" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_4CC6F36CAEA383BE788EDFED535F1BFA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_AAD56DB127242A4F769CDFED53603C35" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_4CC6F36CAEA383BE788EDFED535F1BFA" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_37A76D751B289D63FEC2DFED535F41AB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_4CC6F36CAEA383BE788EDFED535F1BFA" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_37A76D751B289D63FEC2DFED535F41AB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_459EEA9F2611924EBD76DFED535F3D28_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_37A76D751B289D63FEC2DFED535F41AB" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_459EEA9F2611924EBD76DFED535F3D28_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_459EEA9F2611924EBD76DFED535F3D28" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_37A76D751B289D63FEC2DFED535F41AB" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_459EEA9F2611924EBD76DFED535F3D28" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_NonDigitalDivisionMember" xlink:label="loc_dakt_NonDigitalDivisionMember_1A007C7CFC546C1543C8DFED536074F1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_459EEA9F2611924EBD76DFED535F3D28" xlink:to="loc_dakt_NonDigitalDivisionMember_1A007C7CFC546C1543C8DFED536074F1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DisposalGroupClassificationAxis" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_FF126AC74817C9FCFC42DFED5360E61A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_4CC6F36CAEA383BE788EDFED535F1BFA" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_FF126AC74817C9FCFC42DFED5360E61A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DisposalGroupClassificationDomain" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_332134D03D7C67D26BC4DFED536003BB_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_FF126AC74817C9FCFC42DFED5360E61A" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_332134D03D7C67D26BC4DFED536003BB_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DisposalGroupClassificationDomain" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_332134D03D7C67D26BC4DFED536003BB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_FF126AC74817C9FCFC42DFED5360E61A" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_332134D03D7C67D26BC4DFED536003BB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_8D4E631B3B80E093F1D9DFED53604F81" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_4CC6F36CAEA383BE788EDFED535F1BFA" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_8D4E631B3B80E093F1D9DFED53604F81" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_C5AFB83D843A0806314EDFED5360C3AD_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_8D4E631B3B80E093F1D9DFED53604F81" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_C5AFB83D843A0806314EDFED5360C3AD_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_C5AFB83D843A0806314EDFED5360C3AD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_8D4E631B3B80E093F1D9DFED53604F81" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_C5AFB83D843A0806314EDFED5360C3AD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal" xlink:label="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_D2C05FC9247BCEA70900DFED536012BD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_AAD56DB127242A4F769CDFED53603C35" xlink:to="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_D2C05FC9247BCEA70900DFED536012BD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_55AD7F5F52B40E13AD41DFED53605565" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_AAD56DB127242A4F769CDFED53603C35" xlink:to="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_55AD7F5F52B40E13AD41DFED53605565" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.daktronics.com/role/SaleOfNonDigitalDivisionNotes" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/SaleOfNonDigitalDivisionTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/SegmentDisclosure" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/SegmentDisclosureNetIncomeBySegmentDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_6BBE75EB8B6253942ECFFE2E17EB8A92" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_4CEBFB09337881AC0EE6FE2E17E9A35B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_6BBE75EB8B6253942ECFFE2E17EB8A92" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_4CEBFB09337881AC0EE6FE2E17E9A35B" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidationItemsAxis" xlink:label="loc_us-gaap_ConsolidationItemsAxis_6D06E3051FC1698EC3ABFE2E17E909D2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_4CEBFB09337881AC0EE6FE2E17E9A35B" xlink:to="loc_us-gaap_ConsolidationItemsAxis_6D06E3051FC1698EC3ABFE2E17E909D2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="loc_us-gaap_ConsolidationItemsDomain_9662F25BF41FBF6D8528FE2E17EA688F_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConsolidationItemsAxis_6D06E3051FC1698EC3ABFE2E17E909D2" xlink:to="loc_us-gaap_ConsolidationItemsDomain_9662F25BF41FBF6D8528FE2E17EA688F_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="loc_us-gaap_ConsolidationItemsDomain_9662F25BF41FBF6D8528FE2E17EA688F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConsolidationItemsAxis_6D06E3051FC1698EC3ABFE2E17E909D2" xlink:to="loc_us-gaap_ConsolidationItemsDomain_9662F25BF41FBF6D8528FE2E17EA688F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_2BB7E08E530A152CC27CFE2E17EA4CDA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidationItemsDomain_9662F25BF41FBF6D8528FE2E17EA688F" xlink:to="loc_us-gaap_OperatingSegmentsMember_2BB7E08E530A152CC27CFE2E17EA4CDA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_F5D0561DC9A339123979FE2E17EA15A8" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_4CEBFB09337881AC0EE6FE2E17E9A35B" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_F5D0561DC9A339123979FE2E17EA15A8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_0DFA773BC374A06CDE91FE2E17EA0042_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_F5D0561DC9A339123979FE2E17EA15A8" xlink:to="loc_us-gaap_SegmentDomain_0DFA773BC374A06CDE91FE2E17EA0042_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_0DFA773BC374A06CDE91FE2E17EA0042" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_F5D0561DC9A339123979FE2E17EA15A8" xlink:to="loc_us-gaap_SegmentDomain_0DFA773BC374A06CDE91FE2E17EA0042" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_CommericalMember" xlink:label="loc_dakt_CommericalMember_D09CDC41B02E9B465557FE2E17EAAEF2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_0DFA773BC374A06CDE91FE2E17EA0042" xlink:to="loc_dakt_CommericalMember_D09CDC41B02E9B465557FE2E17EAAEF2" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_LiveEventsMember" xlink:label="loc_dakt_LiveEventsMember_40D03CE8E4B6D98BF484FE2E17EA9683" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_0DFA773BC374A06CDE91FE2E17EA0042" xlink:to="loc_dakt_LiveEventsMember_40D03CE8E4B6D98BF484FE2E17EA9683" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_HighSchoolParkandRecreationMember" xlink:label="loc_dakt_HighSchoolParkandRecreationMember_D30F6F5A192E88577EE1FE2E17EA0284" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_0DFA773BC374A06CDE91FE2E17EA0042" xlink:to="loc_dakt_HighSchoolParkandRecreationMember_D30F6F5A192E88577EE1FE2E17EA0284" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_TransportationMember" xlink:label="loc_dakt_TransportationMember_5AF783AC6681E1789996FE2E17EAD7BB" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_0DFA773BC374A06CDE91FE2E17EA0042" xlink:to="loc_dakt_TransportationMember_5AF783AC6681E1789996FE2E17EAD7BB" xlink:type="arc" />
    <link:loc xlink:href="dakt-20171028.xsd#dakt_InternationalMember" xlink:label="loc_dakt_InternationalMember_56C0A8BA7906D3AB9E58FE2E17EBFB94" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_0DFA773BC374A06CDE91FE2E17EA0042" xlink:to="loc_dakt_InternationalMember_56C0A8BA7906D3AB9E58FE2E17EBFB94" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_39C8B41AAA4B977A447EFE2E17EBDC9D" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_0DFA773BC374A06CDE91FE2E17EA0042" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_39C8B41AAA4B977A447EFE2E17EBDC9D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NumberOfReportableSegments" xlink:label="loc_us-gaap_NumberOfReportableSegments_63FB15FBD46A64B23F26FE2E17EB7857" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_6BBE75EB8B6253942ECFFE2E17EB8A92" xlink:to="loc_us-gaap_NumberOfReportableSegments_63FB15FBD46A64B23F26FE2E17EB7857" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SalesRevenueNet" xlink:label="loc_us-gaap_SalesRevenueNet_129FC0E427F49A4D7F99FE2E17EB04A7" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_6BBE75EB8B6253942ECFFE2E17EB8A92" xlink:to="loc_us-gaap_SalesRevenueNet_129FC0E427F49A4D7F99FE2E17EB04A7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GrossProfit" xlink:label="loc_us-gaap_GrossProfit_531315CBF46E77067723FE2E17EBC710" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_6BBE75EB8B6253942ECFFE2E17EB8A92" xlink:to="loc_us-gaap_GrossProfit_531315CBF46E77067723FE2E17EBC710" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SellingExpense" xlink:label="loc_us-gaap_SellingExpense_236799C6AF474799AD88FE2E17EB2B68" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_6BBE75EB8B6253942ECFFE2E17EB8A92" xlink:to="loc_us-gaap_SellingExpense_236799C6AF474799AD88FE2E17EB2B68" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DepreciationAndAmortizationAbstract" xlink:label="loc_us-gaap_DepreciationAndAmortizationAbstract_354580656B6DB6D477CFFE2E17EBABF2" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_6BBE75EB8B6253942ECFFE2E17EB8A92" xlink:to="loc_us-gaap_DepreciationAndAmortizationAbstract_354580656B6DB6D477CFFE2E17EBABF2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_953C0A9D0F2152A833FDFE2E17EBDD02" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DepreciationAndAmortizationAbstract_354580656B6DB6D477CFFE2E17EBABF2" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_953C0A9D0F2152A833FDFE2E17EBDD02" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="loc_us-gaap_OperatingExpensesAbstract_881520E2204B9E6B1684FE2E17EC49A8" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_6BBE75EB8B6253942ECFFE2E17EB8A92" xlink:to="loc_us-gaap_OperatingExpensesAbstract_881520E2204B9E6B1684FE2E17EC49A8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_BF8C8A9F9C9BEC26E934FE2E17EC8F5B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_881520E2204B9E6B1684FE2E17EC49A8" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_BF8C8A9F9C9BEC26E934FE2E17EC8F5B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_EF88B022C05E1AFF8A87FE2E17EC5BE8" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_881520E2204B9E6B1684FE2E17EC49A8" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_EF88B022C05E1AFF8A87FE2E17EC5BE8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_AFB08B0A2482FD9CB01EFE2E17EC945D" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_6BBE75EB8B6253942ECFFE2E17EB8A92" xlink:to="loc_us-gaap_OperatingIncomeLoss_AFB08B0A2482FD9CB01EFE2E17EC945D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_7B7ED5360F2F2ED22D89FE2E17EC8045" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_6BBE75EB8B6253942ECFFE2E17EB8A92" xlink:to="loc_us-gaap_NonoperatingIncomeExpenseAbstract_7B7ED5360F2F2ED22D89FE2E17EC8045" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InvestmentIncomeNet" xlink:label="loc_us-gaap_InvestmentIncomeNet_306DA7A60FC32298E1DBFE2E17ECBEA5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_7B7ED5360F2F2ED22D89FE2E17EC8045" xlink:to="loc_us-gaap_InvestmentIncomeNet_306DA7A60FC32298E1DBFE2E17ECBEA5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaap_InterestExpense_D7A22DE8EB02A43A16FBFE2E17EC7DBA" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_7B7ED5360F2F2ED22D89FE2E17EC8045" xlink:to="loc_us-gaap_InterestExpense_D7A22DE8EB02A43A16FBFE2E17EC7DBA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_61A92357306B6AED1AA1FE2E17ECFA51" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_7B7ED5360F2F2ED22D89FE2E17EC8045" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_61A92357306B6AED1AA1FE2E17ECFA51" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_EFFE59D83E1C857AF969FE2E17EE33D8" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_6BBE75EB8B6253942ECFFE2E17EB8A92" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_EFFE59D83E1C857AF969FE2E17EE33D8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_F7A328B6268B4E324845FE2E17EEE3E5" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_6BBE75EB8B6253942ECFFE2E17EB8A92" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_F7A328B6268B4E324845FE2E17EEE3E5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_641D3925FE981A4C8110FE2E17EEC5FB" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_6BBE75EB8B6253942ECFFE2E17EB8A92" xlink:to="loc_us-gaap_NetIncomeLoss_641D3925FE981A4C8110FE2E17EEC5FB" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.daktronics.com/role/SegmentDisclosureNetSalesAndLongLivedAssetsByGeographicAreaDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems" xlink:label="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_41B9A239BE4189A2FF8F7BAA57DDE158" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable" xlink:label="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_E8ECFB5102C281A042297BAA57DDD68B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_41B9A239BE4189A2FF8F7BAA57DDE158" xlink:to="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_E8ECFB5102C281A042297BAA57DDD68B" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementGeographicalAxis" xlink:label="loc_us-gaap_StatementGeographicalAxis_D3B6FA0E40A1F6A1321B7BAA57DD879F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_E8ECFB5102C281A042297BAA57DDD68B" xlink:to="loc_us-gaap_StatementGeographicalAxis_D3B6FA0E40A1F6A1321B7BAA57DD879F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentGeographicalDomain" xlink:label="loc_us-gaap_SegmentGeographicalDomain_1C9811DC8A2224C589487BAA57DDBE02_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementGeographicalAxis_D3B6FA0E40A1F6A1321B7BAA57DD879F" xlink:to="loc_us-gaap_SegmentGeographicalDomain_1C9811DC8A2224C589487BAA57DDBE02_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentGeographicalDomain" xlink:label="loc_us-gaap_SegmentGeographicalDomain_1C9811DC8A2224C589487BAA57DDBE02" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementGeographicalAxis_D3B6FA0E40A1F6A1321B7BAA57DD879F" xlink:to="loc_us-gaap_SegmentGeographicalDomain_1C9811DC8A2224C589487BAA57DDBE02" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_48150DA1F6A20300A1A27BAA57DD616D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentGeographicalDomain_1C9811DC8A2224C589487BAA57DDBE02" xlink:to="loc_country_US_48150DA1F6A20300A1A27BAA57DD616D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NonUsMember" xlink:label="loc_us-gaap_NonUsMember_C7009E267E0E1C9AF74A7BAA57DD29D2" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentGeographicalDomain_1C9811DC8A2224C589487BAA57DDBE02" xlink:to="loc_us-gaap_NonUsMember_C7009E267E0E1C9AF74A7BAA57DD29D2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GeographicAreasRevenuesFromExternalCustomersAbstract" xlink:label="loc_us-gaap_GeographicAreasRevenuesFromExternalCustomersAbstract_836E5343E96CF59534207BAA57DDF8F0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_41B9A239BE4189A2FF8F7BAA57DDE158" xlink:to="loc_us-gaap_GeographicAreasRevenuesFromExternalCustomersAbstract_836E5343E96CF59534207BAA57DDF8F0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_A5AD69015D631EDE0AF47BAA57DDF987" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeographicAreasRevenuesFromExternalCustomersAbstract_836E5343E96CF59534207BAA57DDF8F0" xlink:to="loc_us-gaap_Revenues_A5AD69015D631EDE0AF47BAA57DDF987" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SalesRevenueNet" xlink:label="loc_us-gaap_SalesRevenueNet_C4AA15CB8D4752C7A6A07BAA57DD7C40" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeographicAreasRevenuesFromExternalCustomersAbstract_836E5343E96CF59534207BAA57DDF8F0" xlink:to="loc_us-gaap_SalesRevenueNet_C4AA15CB8D4752C7A6A07BAA57DD7C40" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GeographicAreasLongLivedAssetsAbstract" xlink:label="loc_us-gaap_GeographicAreasLongLivedAssetsAbstract_6E2E099F7F7CC014E69C7BAA57DD1779" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_41B9A239BE4189A2FF8F7BAA57DDE158" xlink:to="loc_us-gaap_GeographicAreasLongLivedAssetsAbstract_6E2E099F7F7CC014E69C7BAA57DD1779" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NoncurrentAssets" xlink:label="loc_us-gaap_NoncurrentAssets_D198F2EC75C42D796E2B7BAA57DD8D52" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeographicAreasLongLivedAssetsAbstract_6E2E099F7F7CC014E69C7BAA57DD1779" xlink:to="loc_us-gaap_NoncurrentAssets_D198F2EC75C42D796E2B7BAA57DD8D52" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.daktronics.com/role/SegmentDisclosureTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/ShareRepurchaseProgramDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityClassOfTreasuryStockLineItems" xlink:label="loc_us-gaap_EquityClassOfTreasuryStockLineItems_9E45AFCA58FE180536727BAA584B4456" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ClassOfTreasuryStockTable" xlink:label="loc_us-gaap_ClassOfTreasuryStockTable_0CE67B12F3E3C10034A27BAA584B92D8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_9E45AFCA58FE180536727BAA584B4456" xlink:to="loc_us-gaap_ClassOfTreasuryStockTable_0CE67B12F3E3C10034A27BAA584B92D8" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_DCE021432048575CA9CA7BAA584BA9C1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ClassOfTreasuryStockTable_0CE67B12F3E3C10034A27BAA584B92D8" xlink:to="loc_us-gaap_StatementClassOfStockAxis_DCE021432048575CA9CA7BAA584BA9C1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_F50B4EEF333529C720DB7BAA584BFE48_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_DCE021432048575CA9CA7BAA584BA9C1" xlink:to="loc_us-gaap_ClassOfStockDomain_F50B4EEF333529C720DB7BAA584BFE48_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_F50B4EEF333529C720DB7BAA584BFE48" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_DCE021432048575CA9CA7BAA584BA9C1" xlink:to="loc_us-gaap_ClassOfStockDomain_F50B4EEF333529C720DB7BAA584BFE48" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareRepurchaseProgramAxis" xlink:label="loc_us-gaap_ShareRepurchaseProgramAxis_76145B22798FE5DE26977BAA584BD614" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ClassOfTreasuryStockTable_0CE67B12F3E3C10034A27BAA584B92D8" xlink:to="loc_us-gaap_ShareRepurchaseProgramAxis_76145B22798FE5DE26977BAA584BD614" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareRepurchaseProgramDomain" xlink:label="loc_us-gaap_ShareRepurchaseProgramDomain_CFB2CC2B2E80B59A540B7BAA584B1051_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_76145B22798FE5DE26977BAA584BD614" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_CFB2CC2B2E80B59A540B7BAA584B1051_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareRepurchaseProgramDomain" xlink:label="loc_us-gaap_ShareRepurchaseProgramDomain_CFB2CC2B2E80B59A540B7BAA584B1051" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_76145B22798FE5DE26977BAA584BD614" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_CFB2CC2B2E80B59A540B7BAA584B1051" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1" xlink:label="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_D9B40F6C6C05F2724A5F7BAA584B1893" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_9E45AFCA58FE180536727BAA584B4456" xlink:to="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_D9B40F6C6C05F2724A5F7BAA584B1893" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodShares" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares_EFE7BFBFF0C75817B7BE7BAA584BB9E0" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_9E45AFCA58FE180536727BAA584B4456" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares_EFE7BFBFF0C75817B7BE7BAA584BB9E0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodValue" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue_E12C2F160AE6DFCF735B7BAA584BFE08" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_9E45AFCA58FE180536727BAA584B4456" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_E12C2F160AE6DFCF735B7BAA584BFE08" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_918A7B969C70CF2A83757BAA584BB77B" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_9E45AFCA58FE180536727BAA584B4456" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_918A7B969C70CF2A83757BAA584BB77B" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.daktronics.com/role/ShareRepurchaseProgramNotes" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/ShareRepurchaseProgramTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/SubsequentEvents" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.daktronics.com/role/SubsequentEventsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="loc_us-gaap_SubsequentEventLineItems_F4A6C4E2ACD4B6BDB11F7BAA58199D79" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventTable" xlink:label="loc_us-gaap_SubsequentEventTable_0CC0F8A1980261E0911F7BAA58197E28" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_F4A6C4E2ACD4B6BDB11F7BAA58199D79" xlink:to="loc_us-gaap_SubsequentEventTable_0CC0F8A1980261E0911F7BAA58197E28" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_7813AA8138B7EC8600497BAA5819B670" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_0CC0F8A1980261E0911F7BAA58197E28" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_7813AA8138B7EC8600497BAA5819B670" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_158C8E8E5A3CE30255907BAA581916D4_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_7813AA8138B7EC8600497BAA5819B670" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_158C8E8E5A3CE30255907BAA581916D4_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_158C8E8E5A3CE30255907BAA581916D4" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_7813AA8138B7EC8600497BAA5819B670" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_158C8E8E5A3CE30255907BAA581916D4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="loc_us-gaap_SubsequentEventMember_B78D23928449055B7E857BAA5819F6E6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_158C8E8E5A3CE30255907BAA581916D4" xlink:to="loc_us-gaap_SubsequentEventMember_B78D23928449055B7E857BAA5819F6E6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_E34966E93FDC899747797BAA5819388E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_F4A6C4E2ACD4B6BDB11F7BAA58199D79" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_E34966E93FDC899747797BAA5819388E" xlink:type="arc" />
  </link:definitionLink>
</link:linkbase>
</XBRL>
