<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-20170729.xsd#BasisOfPresentationAndSummaryOfCriticalAccountingPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/BasisOfPresentationAndSummaryOfCriticalAccountingPoliciesPolicies" xlink:href="dakt-20170729.xsd#BasisOfPresentationAndSummaryOfCriticalAccountingPoliciesPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/BasisOfPresentationAndSummaryOfCriticalAccountingPoliciesPrinciplesOfConsolidationDetails" xlink:href="dakt-20170729.xsd#BasisOfPresentationAndSummaryOfCriticalAccountingPoliciesPrinciplesOfConsolidationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/BusinessCombination" xlink:href="dakt-20170729.xsd#BusinessCombination" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/BusinessCombinationDetails" xlink:href="dakt-20170729.xsd#BusinessCombinationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/BusinessCombinationTables" xlink:href="dakt-20170729.xsd#BusinessCombinationTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/CommitmentsAndContingencies" xlink:href="dakt-20170729.xsd#CommitmentsAndContingencies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/CommitmentsAndContingenciesGuaranteesAndWarrantiesDetails" xlink:href="dakt-20170729.xsd#CommitmentsAndContingenciesGuaranteesAndWarrantiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/CommitmentsAndContingenciesLeasesDetails" xlink:href="dakt-20170729.xsd#CommitmentsAndContingenciesLeasesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/CommitmentsAndContingenciesPurchaseCommitmentsDetails" xlink:href="dakt-20170729.xsd#CommitmentsAndContingenciesPurchaseCommitmentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/CommitmentsAndContingenciesTables" xlink:href="dakt-20170729.xsd#CommitmentsAndContingenciesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ConsolidatedBalanceSheets" xlink:href="dakt-20170729.xsd#ConsolidatedBalanceSheets" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:href="dakt-20170729.xsd#ConsolidatedBalanceSheetsParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ConsolidatedStatementOfComprehensiveIncome" xlink:href="dakt-20170729.xsd#ConsolidatedStatementOfComprehensiveIncome" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ConsolidatedStatementsOfCashFlows" xlink:href="dakt-20170729.xsd#ConsolidatedStatementsOfCashFlows" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ConsolidatedStatementsOfOperations" xlink:href="dakt-20170729.xsd#ConsolidatedStatementsOfOperations" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/DerivativeFinancialInstruments" xlink:href="dakt-20170729.xsd#DerivativeFinancialInstruments" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/DerivativeFinancialInstrumentsDetails" xlink:href="dakt-20170729.xsd#DerivativeFinancialInstrumentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/DerivativeFinancialInstrumentsTables" xlink:href="dakt-20170729.xsd#DerivativeFinancialInstrumentsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/DocumentAndEntityInformation" xlink:href="dakt-20170729.xsd#DocumentAndEntityInformation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/EarningsPerShareEps" xlink:href="dakt-20170729.xsd#EarningsPerShareEps" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/EarningsPerShareEpsAntidilutiveSharesExcludedDetails" xlink:href="dakt-20170729.xsd#EarningsPerShareEpsAntidilutiveSharesExcludedDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/EarningsPerShareEpsReconciliationOfIncomeDetails" xlink:href="dakt-20170729.xsd#EarningsPerShareEpsReconciliationOfIncomeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/EarningsPerShareEpsTables" xlink:href="dakt-20170729.xsd#EarningsPerShareEpsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/FairValueMeasurement" xlink:href="dakt-20170729.xsd#FairValueMeasurement" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/FairValueMeasurementDetails" xlink:href="dakt-20170729.xsd#FairValueMeasurementDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/FairValueMeasurementRollForwardOfLevel3ContingentConsiderationLiabilityDetails" xlink:href="dakt-20170729.xsd#FairValueMeasurementRollForwardOfLevel3ContingentConsiderationLiabilityDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/FairValueMeasurementTables" xlink:href="dakt-20170729.xsd#FairValueMeasurementTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/Goodwill" xlink:href="dakt-20170729.xsd#Goodwill" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/GoodwillDetails" xlink:href="dakt-20170729.xsd#GoodwillDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/GoodwillTables" xlink:href="dakt-20170729.xsd#GoodwillTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/IncomeTaxes" xlink:href="dakt-20170729.xsd#IncomeTaxes" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/IncomeTaxesDetails" xlink:href="dakt-20170729.xsd#IncomeTaxesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/Inventories" xlink:href="dakt-20170729.xsd#Inventories" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/InventoriesDetails" xlink:href="dakt-20170729.xsd#InventoriesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/InventoriesTables" xlink:href="dakt-20170729.xsd#InventoriesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/MarketableSecurities" xlink:href="dakt-20170729.xsd#MarketableSecurities" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/MarketableSecuritiesAvailableForSaleByMaturityDateDetails" xlink:href="dakt-20170729.xsd#MarketableSecuritiesAvailableForSaleByMaturityDateDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/MarketableSecuritiesAvailableForSaleSecuritiesDetails" xlink:href="dakt-20170729.xsd#MarketableSecuritiesAvailableForSaleSecuritiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/MarketableSecuritiesTables" xlink:href="dakt-20170729.xsd#MarketableSecuritiesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/Receivables" xlink:href="dakt-20170729.xsd#Receivables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ReceivablesDetails" xlink:href="dakt-20170729.xsd#ReceivablesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/SegmentDisclosure" xlink:href="dakt-20170729.xsd#SegmentDisclosure" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/SegmentDisclosureNetIncomeBySegmentDetails" xlink:href="dakt-20170729.xsd#SegmentDisclosureNetIncomeBySegmentDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/SegmentDisclosureNetSalesAndLongLivedAssetsByGeographicAreaDetails" xlink:href="dakt-20170729.xsd#SegmentDisclosureNetSalesAndLongLivedAssetsByGeographicAreaDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/SegmentDisclosureTables" xlink:href="dakt-20170729.xsd#SegmentDisclosureTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ShareRepurchaseProgramDetails" xlink:href="dakt-20170729.xsd#ShareRepurchaseProgramDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ShareRepurchaseProgramNotes" xlink:href="dakt-20170729.xsd#ShareRepurchaseProgramNotes" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/ShareRepurchaseProgramTables" xlink:href="dakt-20170729.xsd#ShareRepurchaseProgramTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/SubsequentEvents" xlink:href="dakt-20170729.xsd#SubsequentEvents" xlink:type="simple" />
  <link:roleRef roleURI="http://www.daktronics.com/role/SubsequentEventsDetails" xlink:href="dakt-20170729.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_7F4953B4943262C1F0B933951015E9BC" 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_077AB9F0E9576C8F1FA233951015BA61" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_7F4953B4943262C1F0B933951015E9BC" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_077AB9F0E9576C8F1FA233951015BA61" 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_AB5F4A30FD18C561E4DA339510150D18" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_077AB9F0E9576C8F1FA233951015BA61" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_AB5F4A30FD18C561E4DA339510150D18" 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_EEE8BFED08E288E8D40733951015C73D_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_AB5F4A30FD18C561E4DA339510150D18" xlink:to="loc_us-gaap_SegmentDomain_EEE8BFED08E288E8D40733951015C73D_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_EEE8BFED08E288E8D40733951015C73D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_AB5F4A30FD18C561E4DA339510150D18" xlink:to="loc_us-gaap_SegmentDomain_EEE8BFED08E288E8D40733951015C73D" 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_7149BDDC4A16912FB1E3339510155F53" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_077AB9F0E9576C8F1FA233951015BA61" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_7149BDDC4A16912FB1E3339510155F53" 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_97459D24761F1DE7DFCF33951015A62F_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_7149BDDC4A16912FB1E3339510155F53" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_97459D24761F1DE7DFCF33951015A62F_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_97459D24761F1DE7DFCF33951015A62F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_7149BDDC4A16912FB1E3339510155F53" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_97459D24761F1DE7DFCF33951015A62F" 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_CE1E75287DE630DE1A1E339510155C39" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_077AB9F0E9576C8F1FA233951015BA61" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_CE1E75287DE630DE1A1E339510155C39" 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_4982F102A715A8258738339510151F81_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_CE1E75287DE630DE1A1E339510155C39" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4982F102A715A8258738339510151F81_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_4982F102A715A8258738339510151F81" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_CE1E75287DE630DE1A1E339510155C39" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4982F102A715A8258738339510151F81" 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_B5A4ED8CEBF82FD3D9C8F1910387F649" 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_86A2F9AA6F44D5E0C62CF1910387BB13" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_B5A4ED8CEBF82FD3D9C8F1910387F649" xlink:to="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_86A2F9AA6F44D5E0C62CF1910387BB13" 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_D35C96FC0D46EE5CCD9EF1910387E6C5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_86A2F9AA6F44D5E0C62CF1910387BB13" xlink:to="loc_us-gaap_ProductOrServiceAxis_D35C96FC0D46EE5CCD9EF1910387E6C5" 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_AF898FB7EFBC67023804F19103876452_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ProductOrServiceAxis_D35C96FC0D46EE5CCD9EF1910387E6C5" xlink:to="loc_us-gaap_ProductsAndServicesDomain_AF898FB7EFBC67023804F19103876452_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_AF898FB7EFBC67023804F19103876452" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ProductOrServiceAxis_D35C96FC0D46EE5CCD9EF1910387E6C5" xlink:to="loc_us-gaap_ProductsAndServicesDomain_AF898FB7EFBC67023804F19103876452" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_OutofHomeProductApplicationMember" xlink:label="loc_dakt_OutofHomeProductApplicationMember_E78B9CB4F4EBBF0837AEF1910387D4DF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductsAndServicesDomain_AF898FB7EFBC67023804F19103876452" xlink:to="loc_dakt_OutofHomeProductApplicationMember_E78B9CB4F4EBBF0837AEF1910387D4DF" 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_E51D2E5ABC2C89984EBAF1910387F4F5" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_86A2F9AA6F44D5E0C62CF1910387BB13" xlink:to="loc_us-gaap_GuaranteeObligationsByNatureAxis_E51D2E5ABC2C89984EBAF1910387F4F5" 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_6FEB926625B61590DFECF19103875991_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_E51D2E5ABC2C89984EBAF1910387F4F5" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_6FEB926625B61590DFECF19103875991_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_6FEB926625B61590DFECF19103875991" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_E51D2E5ABC2C89984EBAF1910387F4F5" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_6FEB926625B61590DFECF19103875991" 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_19F78262385DA0F397FAF19103878074" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_6FEB926625B61590DFECF19103875991" xlink:to="loc_us-gaap_PerformanceGuaranteeMember_19F78262385DA0F397FAF19103878074" 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_18588BBE082D57D02566F191038786D3" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_86A2F9AA6F44D5E0C62CF1910387BB13" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_18588BBE082D57D02566F191038786D3" 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_DBCA80C0596AE08FBB42F191038703A4_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_18588BBE082D57D02566F191038786D3" xlink:to="loc_us-gaap_LossContingencyNatureDomain_DBCA80C0596AE08FBB42F191038703A4_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_DBCA80C0596AE08FBB42F191038703A4" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_18588BBE082D57D02566F191038786D3" xlink:to="loc_us-gaap_LossContingencyNatureDomain_DBCA80C0596AE08FBB42F191038703A4" 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_252A73DCB45815607949F1910387AE3F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_DBCA80C0596AE08FBB42F191038703A4" xlink:to="loc_us-gaap_FinancialStandbyLetterOfCreditMember_252A73DCB45815607949F1910387AE3F" 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_9F6E5652D16DE1EFB550F1910387EC34" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_DBCA80C0596AE08FBB42F191038703A4" xlink:to="loc_us-gaap_SuretyBondMember_9F6E5652D16DE1EFB550F1910387EC34" 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_55CFB2053CC9224E71FAF1910387DCB4" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_86A2F9AA6F44D5E0C62CF1910387BB13" xlink:to="loc_us-gaap_RangeAxis_55CFB2053CC9224E71FAF1910387DCB4" 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_9B480079745D3A9248C4F1910387E0BA_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis_55CFB2053CC9224E71FAF1910387DCB4" xlink:to="loc_us-gaap_RangeMember_9B480079745D3A9248C4F1910387E0BA_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_9B480079745D3A9248C4F1910387E0BA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis_55CFB2053CC9224E71FAF1910387DCB4" xlink:to="loc_us-gaap_RangeMember_9B480079745D3A9248C4F1910387E0BA" 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_0BB39BAB539204F553FAF19103871C32" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_9B480079745D3A9248C4F1910387E0BA" xlink:to="loc_us-gaap_MinimumMember_0BB39BAB539204F553FAF19103871C32" 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_7C4CB1A05018E22EB73DF19103876AD8" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_9B480079745D3A9248C4F1910387E0BA" xlink:to="loc_us-gaap_MaximumMember_7C4CB1A05018E22EB73DF19103876AD8" 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_3B8B9C5AF8E43F3D8A27F19103872FFB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_B5A4ED8CEBF82FD3D9C8F1910387F649" xlink:to="loc_us-gaap_GuaranteesAbstract_3B8B9C5AF8E43F3D8A27F19103872FFB" 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_8CA4FEB02493C8641134F19103879341" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteesAbstract_3B8B9C5AF8E43F3D8A27F19103872FFB" xlink:to="loc_us-gaap_LossContingencyAccrualAtCarryingValue_8CA4FEB02493C8641134F19103879341" 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_CC0FF02799D421C04443F191038726AF" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_B5A4ED8CEBF82FD3D9C8F1910387F649" xlink:to="loc_us-gaap_ProductWarrantiesDisclosuresAbstract_CC0FF02799D421C04443F191038726AF" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_ProductWarrantyAccrualStandardPartsWarrantyCoverageTerm" xlink:label="loc_dakt_ProductWarrantyAccrualStandardPartsWarrantyCoverageTerm_5FB7AF57CC377219770EF1910387C728" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductWarrantiesDisclosuresAbstract_CC0FF02799D421C04443F191038726AF" xlink:to="loc_dakt_ProductWarrantyAccrualStandardPartsWarrantyCoverageTerm_5FB7AF57CC377219770EF1910387C728" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_ProductWarrantyAccrualInstallationWarrantyCoverageTerm" xlink:label="loc_dakt_ProductWarrantyAccrualInstallationWarrantyCoverageTerm_3D2C7D38B49873AC0D62F19103874588" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductWarrantiesDisclosuresAbstract_CC0FF02799D421C04443F191038726AF" xlink:to="loc_dakt_ProductWarrantyAccrualInstallationWarrantyCoverageTerm_3D2C7D38B49873AC0D62F19103874588" 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_92340762ADCC08EE8864F191039106F5" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductWarrantiesDisclosuresAbstract_CC0FF02799D421C04443F191038726AF" xlink:to="loc_us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease_92340762ADCC08EE8864F191039106F5" 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_5E71AE551F8C903368B1F1910391A9E1" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductWarrantiesDisclosuresAbstract_CC0FF02799D421C04443F191038726AF" xlink:to="loc_us-gaap_ProductWarrantyAccrual_5E71AE551F8C903368B1F1910391A9E1" 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_491BFDB3F761FBC32C59F19103913099" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductWarrantiesDisclosuresAbstract_CC0FF02799D421C04443F191038726AF" xlink:to="loc_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_491BFDB3F761FBC32C59F19103913099" 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_31A9FCE14EA5D479C691F191039179C2" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_491BFDB3F761FBC32C59F19103913099" xlink:to="loc_us-gaap_ProductWarrantyAccrualWarrantiesIssued_31A9FCE14EA5D479C691F191039179C2" 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_B5B8DD231FF974271062F1910391AD1B" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_491BFDB3F761FBC32C59F19103913099" xlink:to="loc_us-gaap_ProductWarrantyAccrualPayments_B5B8DD231FF974271062F1910391AD1B" 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_19743D278A8715514C20F1910373CF2A" 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_F10CBD28ED6BFF85F0C2F19103731000" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OperatingLeasedAssetsLineItems_19743D278A8715514C20F1910373CF2A" xlink:to="loc_us-gaap_ScheduleOfOperatingLeasedAssetsTable_F10CBD28ED6BFF85F0C2F19103731000" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_LeasesPurchasePriceOptionAxis" xlink:label="loc_dakt_LeasesPurchasePriceOptionAxis_7550315A02BE7D007782F1910373245E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfOperatingLeasedAssetsTable_F10CBD28ED6BFF85F0C2F19103731000" xlink:to="loc_dakt_LeasesPurchasePriceOptionAxis_7550315A02BE7D007782F1910373245E" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_LeasesPurchasePriceOptionDomain" xlink:label="loc_dakt_LeasesPurchasePriceOptionDomain_E64C2AA949ACEED9E275F191037318FD_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dakt_LeasesPurchasePriceOptionAxis_7550315A02BE7D007782F1910373245E" xlink:to="loc_dakt_LeasesPurchasePriceOptionDomain_E64C2AA949ACEED9E275F191037318FD_default" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_LeasesPurchasePriceOptionDomain" xlink:label="loc_dakt_LeasesPurchasePriceOptionDomain_E64C2AA949ACEED9E275F191037318FD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dakt_LeasesPurchasePriceOptionAxis_7550315A02BE7D007782F1910373245E" xlink:to="loc_dakt_LeasesPurchasePriceOptionDomain_E64C2AA949ACEED9E275F191037318FD" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_March312017toMarch312022Member" xlink:label="loc_dakt_March312017toMarch312022Member_D52CF9AB8F42555F4DCCF1910373A01B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dakt_LeasesPurchasePriceOptionDomain_E64C2AA949ACEED9E275F191037318FD" xlink:to="loc_dakt_March312017toMarch312022Member_D52CF9AB8F42555F4DCCF1910373A01B" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_April12022toMarch312023Member" xlink:label="loc_dakt_April12022toMarch312023Member_D8EEECAEE5054A26E540F1910373FA53" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dakt_LeasesPurchasePriceOptionDomain_E64C2AA949ACEED9E275F191037318FD" xlink:to="loc_dakt_April12022toMarch312023Member_D8EEECAEE5054A26E540F1910373FA53" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_April12023toMarch312024Member" xlink:label="loc_dakt_April12023toMarch312024Member_3E84D62FC74629BCFDF2F1910373A95D" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dakt_LeasesPurchasePriceOptionDomain_E64C2AA949ACEED9E275F191037318FD" xlink:to="loc_dakt_April12023toMarch312024Member_3E84D62FC74629BCFDF2F1910373A95D" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_OperatingLeasesPurchaseOptionPrice" xlink:label="loc_dakt_OperatingLeasesPurchaseOptionPrice_54AF565D3ECFB7AE3CD9F19103730817" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasedAssetsLineItems_19743D278A8715514C20F1910373CF2A" xlink:to="loc_dakt_OperatingLeasesPurchaseOptionPrice_54AF565D3ECFB7AE3CD9F19103730817" 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_23680D922CFFB8CD72B6F19103736616" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasedAssetsLineItems_19743D278A8715514C20F1910373CF2A" xlink:to="loc_us-gaap_OperatingLeasesRentExpenseNet_23680D922CFFB8CD72B6F19103736616" 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_485982C436FEC9AEC56AF1910373E603" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasedAssetsLineItems_19743D278A8715514C20F1910373CF2A" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_485982C436FEC9AEC56AF1910373E603" 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_5FA94438FAE2DFFEF02AF19103732009" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_485982C436FEC9AEC56AF1910373E603" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsRemainderOfFiscalYear_5FA94438FAE2DFFEF02AF19103732009" 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_67EA0A99D3EC9BC4FA96F191037395E0" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_485982C436FEC9AEC56AF1910373E603" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_67EA0A99D3EC9BC4FA96F191037395E0" 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_277EEE6EFE9703AE9F42F1910373CE66" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_485982C436FEC9AEC56AF1910373E603" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_277EEE6EFE9703AE9F42F1910373CE66" 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_5EF7EA6559EEBC3E342AF19103731559" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_485982C436FEC9AEC56AF1910373E603" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_5EF7EA6559EEBC3E342AF19103731559" 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_42E3A74D7335BD68F859F19103732DAB" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_485982C436FEC9AEC56AF1910373E603" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_42E3A74D7335BD68F859F19103732DAB" 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_E8C1219B7341D5F93B86F19103733C2D" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_485982C436FEC9AEC56AF1910373E603" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_E8C1219B7341D5F93B86F19103733C2D" 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_FCBD522899E09B34314DF1910373301F" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_485982C436FEC9AEC56AF1910373E603" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_FCBD522899E09B34314DF1910373301F" 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_9CF97F89C0350544C9A60A2B30FE062B" 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_30C2780EF63C11AD9A370A2B30FEB283" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_9CF97F89C0350544C9A60A2B30FE062B" xlink:to="loc_us-gaap_StatementTable_30C2780EF63C11AD9A370A2B30FEB283" 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_8764AF765BD8735E08430A2B30FEFACD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_30C2780EF63C11AD9A370A2B30FEB283" xlink:to="loc_us-gaap_StatementScenarioAxis_8764AF765BD8735E08430A2B30FEFACD" 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_CE93857344A91862D3AD0A2B30FE3A80_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementScenarioAxis_8764AF765BD8735E08430A2B30FEFACD" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_CE93857344A91862D3AD0A2B30FE3A80_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_CE93857344A91862D3AD0A2B30FE3A80" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementScenarioAxis_8764AF765BD8735E08430A2B30FEFACD" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_CE93857344A91862D3AD0A2B30FE3A80" 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_C91BC3DEBFFC8E1DB40FE19347669152" 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_6AD47A96DD69805D55E8E1934766258D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_C91BC3DEBFFC8E1DB40FE19347669152" xlink:to="loc_us-gaap_DerivativeTable_6AD47A96DD69805D55E8E1934766258D" 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_BE8E4CD74D39AE49DC80E19347663281" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_6AD47A96DD69805D55E8E1934766258D" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_BE8E4CD74D39AE49DC80E19347663281" 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_0DDEE5967DA680D64825E1972E32DA3D_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_BE8E4CD74D39AE49DC80E19347663281" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_0DDEE5967DA680D64825E1972E32DA3D_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_631E40E777F7CD754B6AE1934766EBE2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_BE8E4CD74D39AE49DC80E19347663281" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_631E40E777F7CD754B6AE1934766EBE2" 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_0DDEE5967DA680D64825E1972E32DA3D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_631E40E777F7CD754B6AE1934766EBE2" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_0DDEE5967DA680D64825E1972E32DA3D" 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_1684E0686EA2AD9B4E75E193476616D4" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_631E40E777F7CD754B6AE1934766EBE2" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_1684E0686EA2AD9B4E75E193476616D4" 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_567CF68EE46AAB7EDDDBE19347666208" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_6AD47A96DD69805D55E8E1934766258D" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_567CF68EE46AAB7EDDDBE19347666208" 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_E6B3844EC71DBC939205E1934766C17B_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_567CF68EE46AAB7EDDDBE19347666208" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_E6B3844EC71DBC939205E1934766C17B_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_E6B3844EC71DBC939205E1934766C17B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_567CF68EE46AAB7EDDDBE19347666208" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_E6B3844EC71DBC939205E1934766C17B" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_UsdToAudMember" xlink:label="loc_dakt_UsdToAudMember_7B431FFD7B3D07064045E1934766DFC3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_E6B3844EC71DBC939205E1934766C17B" xlink:to="loc_dakt_UsdToAudMember_7B431FFD7B3D07064045E1934766DFC3" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_UsdToCadMember" xlink:label="loc_dakt_UsdToCadMember_9C55775BDB7DB9FDABAAE1934766E5DD" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_E6B3844EC71DBC939205E1934766C17B" xlink:to="loc_dakt_UsdToCadMember_9C55775BDB7DB9FDABAAE1934766E5DD" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_UsdToGbpMemberMember" xlink:label="loc_dakt_UsdToGbpMemberMember_3E3D8A58515EE4A56B26E1934766F639" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_E6B3844EC71DBC939205E1934766C17B" xlink:to="loc_dakt_UsdToGbpMemberMember_3E3D8A58515EE4A56B26E1934766F639" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_UsdToSgdMember" xlink:label="loc_dakt_UsdToSgdMember_8EAE000D5707C19D6103E19347669B6B" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_E6B3844EC71DBC939205E1934766C17B" xlink:to="loc_dakt_UsdToSgdMember_8EAE000D5707C19D6103E19347669B6B" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_UsdToEurMember" xlink:label="loc_dakt_UsdToEurMember_8311A1F1273C0954242EE1934766CE04" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_E6B3844EC71DBC939205E1934766C17B" xlink:to="loc_dakt_UsdToEurMember_8311A1F1273C0954242EE1934766CE04" 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_4B8779F9DA1869EF1020E1934766853B" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_6AD47A96DD69805D55E8E1934766258D" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_4B8779F9DA1869EF1020E1934766853B" 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_975AA5F3AC27800B930BE193476620FF_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_4B8779F9DA1869EF1020E1934766853B" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_975AA5F3AC27800B930BE193476620FF_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_975AA5F3AC27800B930BE193476620FF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_4B8779F9DA1869EF1020E1934766853B" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_975AA5F3AC27800B930BE193476620FF" 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_E6A0110D664C1B0E1B8EE193476656AD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_975AA5F3AC27800B930BE193476620FF" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_E6A0110D664C1B0E1B8EE193476656AD" 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_96BAD65864900D33B57EE1934766482E" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_6AD47A96DD69805D55E8E1934766258D" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_96BAD65864900D33B57EE1934766482E" 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_EA8296636A8FE39FED31E193476606DC_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_96BAD65864900D33B57EE1934766482E" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_EA8296636A8FE39FED31E193476606DC_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_EA8296636A8FE39FED31E193476606DC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_96BAD65864900D33B57EE1934766482E" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_EA8296636A8FE39FED31E193476606DC" 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_C6D9394A2A06BBE196ABE1934766C77B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_EA8296636A8FE39FED31E193476606DC" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_C6D9394A2A06BBE196ABE1934766C77B" 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_F10B9327F936AE43A1F1E1934766FC01" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_C91BC3DEBFFC8E1DB40FE19347669152" xlink:to="loc_invest_DerivativeNotionalAmount_F10B9327F936AE43A1F1E1934766FC01" 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_2858716F2FE03ECAB0D3E19347665540" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_C91BC3DEBFFC8E1DB40FE19347669152" xlink:to="loc_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_2858716F2FE03ECAB0D3E19347665540" 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_493C2318E3EB9B389150E19347667A0A" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_C91BC3DEBFFC8E1DB40FE19347669152" xlink:to="loc_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_493C2318E3EB9B389150E19347667A0A" 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_E86D59639E9CA000C9F4CC8F9C2EBE38" 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_5A97AED8B44F9204C429CC8F9C2EE260" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_EntityInformationLineItems_E86D59639E9CA000C9F4CC8F9C2EBE38" xlink:to="loc_dei_EntitiesTable_5A97AED8B44F9204C429CC8F9C2EE260" 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_9E6993025792EA99F06ACC8F9C2E1D73" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_EntitiesTable_5A97AED8B44F9204C429CC8F9C2EE260" xlink:to="loc_dei_LegalEntityAxis_9E6993025792EA99F06ACC8F9C2E1D73" 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_260D116561A6511212C5CC8F9C2E1A99_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_9E6993025792EA99F06ACC8F9C2E1D73" xlink:to="loc_dei_EntityDomain_260D116561A6511212C5CC8F9C2E1A99_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_260D116561A6511212C5CC8F9C2E1A99" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_9E6993025792EA99F06ACC8F9C2E1D73" xlink:to="loc_dei_EntityDomain_260D116561A6511212C5CC8F9C2E1A99" 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_FBDBBAF88F2C9159CB23CC8F9C2E4FF3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_E86D59639E9CA000C9F4CC8F9C2EBE38" xlink:to="loc_dei_EntityRegistrantName_FBDBBAF88F2C9159CB23CC8F9C2E4FF3" 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_3F3F32B5BEC58214FD4FCC8F9C2E5E3C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_E86D59639E9CA000C9F4CC8F9C2EBE38" xlink:to="loc_dei_EntityCentralIndexKey_3F3F32B5BEC58214FD4FCC8F9C2E5E3C" 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_245135755F8BA88D8960CC8F9C2E6EF2" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_E86D59639E9CA000C9F4CC8F9C2EBE38" xlink:to="loc_dei_CurrentFiscalYearEndDate_245135755F8BA88D8960CC8F9C2E6EF2" 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_9A8E3F50D43805604B4BCC8F9C2EB44F" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_E86D59639E9CA000C9F4CC8F9C2EBE38" xlink:to="loc_dei_EntityWellKnownSeasonedIssuer_9A8E3F50D43805604B4BCC8F9C2EB44F" 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_0CBDDE68DAED4211F8BCCC8F9C2ED84B" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_E86D59639E9CA000C9F4CC8F9C2EBE38" xlink:to="loc_dei_EntityVoluntaryFilers_0CBDDE68DAED4211F8BCCC8F9C2ED84B" 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_26E4D2B70BBD64403598CC8F9C2FD9BA" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_E86D59639E9CA000C9F4CC8F9C2EBE38" xlink:to="loc_dei_EntityCurrentReportingStatus_26E4D2B70BBD64403598CC8F9C2FD9BA" 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_DC626144A67032D04D5ECC8F9C2FB0A1" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_E86D59639E9CA000C9F4CC8F9C2EBE38" xlink:to="loc_dei_EntityFilerCategory_DC626144A67032D04D5ECC8F9C2FB0A1" 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_F645F90789A2D59B2C4BCC8F9C2F8433" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_E86D59639E9CA000C9F4CC8F9C2EBE38" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_F645F90789A2D59B2C4BCC8F9C2F8433" 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_E67FB72B03DE0A3AEB83CC8F9C2F540F" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_E86D59639E9CA000C9F4CC8F9C2EBE38" xlink:to="loc_dei_DocumentFiscalYearFocus_E67FB72B03DE0A3AEB83CC8F9C2F540F" 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_F1D0E7E423AF8CBCD412CC8F9C2F3606" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_E86D59639E9CA000C9F4CC8F9C2EBE38" xlink:to="loc_dei_DocumentFiscalPeriodFocus_F1D0E7E423AF8CBCD412CC8F9C2F3606" 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_8BCB0091FC65A682E7FECC8F9C2FB42E" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_E86D59639E9CA000C9F4CC8F9C2EBE38" xlink:to="loc_dei_DocumentType_8BCB0091FC65A682E7FECC8F9C2FB42E" 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_96861D0B707361209D96CC8F9C2F2DE0" xlink:type="locator" />
    <link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_E86D59639E9CA000C9F4CC8F9C2EBE38" xlink:to="loc_dei_AmendmentFlag_96861D0B707361209D96CC8F9C2F2DE0" 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_44C2AB5013792697822FCC8F9C2FD2A4" xlink:type="locator" />
    <link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_E86D59639E9CA000C9F4CC8F9C2EBE38" xlink:to="loc_dei_DocumentPeriodEndDate_44C2AB5013792697822FCC8F9C2FD2A4" 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_FF30495AB3D31C8CC40ECC8F9B734B86" 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_64FBD7A8FE4F518D1110CC8F9B73C99E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_FF30495AB3D31C8CC40ECC8F9B734B86" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_64FBD7A8FE4F518D1110CC8F9B73C99E" 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_84B61A7222D0A50DD8E1CC8F9B73EDDA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_64FBD7A8FE4F518D1110CC8F9B73C99E" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_84B61A7222D0A50DD8E1CC8F9B73EDDA" 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_6B2AB227A91026AC93DBCC8F9B7354A8_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_84B61A7222D0A50DD8E1CC8F9B73EDDA" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_6B2AB227A91026AC93DBCC8F9B7354A8_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_6B2AB227A91026AC93DBCC8F9B7354A8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_84B61A7222D0A50DD8E1CC8F9B73EDDA" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_6B2AB227A91026AC93DBCC8F9B7354A8" 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_593FE7ECB81CC7D7F52ACC8F9B739406" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_6B2AB227A91026AC93DBCC8F9B7354A8" xlink:to="loc_us-gaap_EmployeeStockOptionMember_593FE7ECB81CC7D7F52ACC8F9B739406" 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_03C3D6F86BF7E5377071CC8F9B78E587" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_FF30495AB3D31C8CC40ECC8F9B734B86" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_03C3D6F86BF7E5377071CC8F9B78E587" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareWeightedAverageExercisePrice" xlink:label="loc_dakt_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareWeightedAverageExercisePrice_4B9032755A83F0C88BFACC8F9B7894BA" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_FF30495AB3D31C8CC40ECC8F9B734B86" xlink:to="loc_dakt_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareWeightedAverageExercisePrice_4B9032755A83F0C88BFACC8F9B7894BA" 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_BB13F10C24244BC88EDEF191033722EE" 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_F8D2212E533021BDB04EF1910337A79C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_BB13F10C24244BC88EDEF191033722EE" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_F8D2212E533021BDB04EF1910337A79C" 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_7165E62AE9A00C9BF08BF1910337DB92" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_F8D2212E533021BDB04EF1910337A79C" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_7165E62AE9A00C9BF08BF1910337DB92" 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_F5789BA58589D9D813C3F1910337B6B7_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_7165E62AE9A00C9BF08BF1910337DB92" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_F5789BA58589D9D813C3F1910337B6B7_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_60B2D40DC6CD6D29F95AF1910337DF03" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_7165E62AE9A00C9BF08BF1910337DB92" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_60B2D40DC6CD6D29F95AF1910337DF03" 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_F5789BA58589D9D813C3F1910337B6B7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_60B2D40DC6CD6D29F95AF1910337DF03" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_F5789BA58589D9D813C3F1910337B6B7" 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_0066C67624468AC3F04EF1910337D651" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_60B2D40DC6CD6D29F95AF1910337DF03" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_0066C67624468AC3F04EF1910337D651" 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_4B30EE206E177119BD0CF191033748DD" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_60B2D40DC6CD6D29F95AF1910337DF03" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_4B30EE206E177119BD0CF191033748DD" 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_2D27845E0C4CA3D04BE9F191033753E5" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_F8D2212E533021BDB04EF1910337A79C" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_2D27845E0C4CA3D04BE9F191033753E5" 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_D07B3824374D22791D06F1910337E1E6_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_2D27845E0C4CA3D04BE9F191033753E5" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_D07B3824374D22791D06F1910337E1E6_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_D07B3824374D22791D06F1910337E1E6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_2D27845E0C4CA3D04BE9F191033753E5" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_D07B3824374D22791D06F1910337E1E6" 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_7414C7969CAEE5862B73F19103373D04" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_D07B3824374D22791D06F1910337E1E6" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_7414C7969CAEE5862B73F19103373D04" 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_8130A0EF34BA3953FAEFF1910337363A" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_F8D2212E533021BDB04EF1910337A79C" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_8130A0EF34BA3953FAEFF1910337363A" 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_AA8ED09ACFB831146999F19103377154_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_8130A0EF34BA3953FAEFF1910337363A" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_AA8ED09ACFB831146999F19103377154_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_AA8ED09ACFB831146999F19103377154" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_8130A0EF34BA3953FAEFF1910337363A" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_AA8ED09ACFB831146999F19103377154" 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_34F4B5C0D4D314494317F1910337BD26" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_AA8ED09ACFB831146999F19103377154" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_34F4B5C0D4D314494317F1910337BD26" 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_9FF547806DC57CB322E2F19103372856" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_AA8ED09ACFB831146999F19103377154" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_9FF547806DC57CB322E2F19103372856" 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_314D899C769FB2885F86F1910337A8A0" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_AA8ED09ACFB831146999F19103377154" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_314D899C769FB2885F86F1910337A8A0" 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_B4DA2AFA0F6954C61843F191033774D6" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_F8D2212E533021BDB04EF1910337A79C" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_B4DA2AFA0F6954C61843F191033774D6" 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_C84C1090703686872D61F19103371638_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_B4DA2AFA0F6954C61843F191033774D6" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_C84C1090703686872D61F19103371638_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_C84C1090703686872D61F19103371638" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_B4DA2AFA0F6954C61843F191033774D6" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_C84C1090703686872D61F19103371638" 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_98E96138B0A7AD38189CF1910337D75B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_C84C1090703686872D61F19103371638" xlink:to="loc_us-gaap_CertificatesOfDepositMember_98E96138B0A7AD38189CF1910337D75B" 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_A6D426D121CE291C4C3CF1910337510A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_C84C1090703686872D61F19103371638" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_A6D426D121CE291C4C3CF1910337510A" 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_59604B227E165388E7DDF19103373028" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_C84C1090703686872D61F19103371638" xlink:to="loc_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_59604B227E165388E7DDF19103373028" 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_254DB87D7C810741AEE2F1910337C6C5" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_C84C1090703686872D61F19103371638" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_254DB87D7C810741AEE2F1910337C6C5" 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_9C7F2A4F06C6F8660D4FF19103372BFE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_BB13F10C24244BC88EDEF191033722EE" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_9C7F2A4F06C6F8660D4FF19103372BFE" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_RestrictedCashAndCashEquivalentsFairValueDisclosure" xlink:label="loc_dakt_RestrictedCashAndCashEquivalentsFairValueDisclosure_2D4BD2CEDD4283938977F19103375327" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_BB13F10C24244BC88EDEF191033722EE" xlink:to="loc_dakt_RestrictedCashAndCashEquivalentsFairValueDisclosure_2D4BD2CEDD4283938977F19103375327" 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_480E25AE207805115EF8F19103378233" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_BB13F10C24244BC88EDEF191033722EE" xlink:to="loc_us-gaap_AvailableForSaleSecurities_480E25AE207805115EF8F19103378233" 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_0A5483ABEF2213DBC93EF19103370A04" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_BB13F10C24244BC88EDEF191033722EE" xlink:to="loc_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_0A5483ABEF2213DBC93EF19103370A04" 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_A6F895FB384D640A3694F1910341857A" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_BB13F10C24244BC88EDEF191033722EE" xlink:to="loc_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_A6F895FB384D640A3694F1910341857A" 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_59BFD61AA0959D5B4F18F1910341AE56" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_BB13F10C24244BC88EDEF191033722EE" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_59BFD61AA0959D5B4F18F1910341AE56" 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_854415CC356B96BEC6BDF1910341C5DD" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_BB13F10C24244BC88EDEF191033722EE" xlink:to="loc_us-gaap_FairValueNetAssetLiability_854415CC356B96BEC6BDF1910341C5DD" 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_F80B68B38758C73D5836F1910323A70E" 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_C236EF0B6B56F3E4910AF19103197761" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_F80B68B38758C73D5836F1910323A70E" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_C236EF0B6B56F3E4910AF19103197761" 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_1330A223885D8C922FCDF1910319829A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_C236EF0B6B56F3E4910AF19103197761" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_1330A223885D8C922FCDF1910319829A" 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_6FA65CF2B688F2A83971F19103192A4C_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_1330A223885D8C922FCDF1910319829A" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_6FA65CF2B688F2A83971F19103192A4C_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_3A6C514685DA06A0FADEF1910319036E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_1330A223885D8C922FCDF1910319829A" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_3A6C514685DA06A0FADEF1910319036E" 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_6FA65CF2B688F2A83971F19103192A4C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_3A6C514685DA06A0FADEF1910319036E" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_6FA65CF2B688F2A83971F19103192A4C" 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_F86E7C8413DF45FFDB81F1910323D589" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_3A6C514685DA06A0FADEF1910319036E" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_F86E7C8413DF45FFDB81F1910323D589" 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_5551E915326E7D354932F1910323294C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_C236EF0B6B56F3E4910AF19103197761" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5551E915326E7D354932F1910323294C" 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_0A3B56A6AEE1731EFC66F191032315BB_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5551E915326E7D354932F1910323294C" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0A3B56A6AEE1731EFC66F191032315BB_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_0A3B56A6AEE1731EFC66F191032315BB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5551E915326E7D354932F1910323294C" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0A3B56A6AEE1731EFC66F191032315BB" 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_CD2E55B315990C084E12F1910323AC7B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0A3B56A6AEE1731EFC66F191032315BB" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_CD2E55B315990C084E12F1910323AC7B" 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_01DF1315E5086CCADAB6F191032318E7" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_C236EF0B6B56F3E4910AF19103197761" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_01DF1315E5086CCADAB6F191032318E7" 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_4C776604117B8419CD56F1910323AB41_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_01DF1315E5086CCADAB6F191032318E7" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_4C776604117B8419CD56F1910323AB41_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_4C776604117B8419CD56F1910323AB41" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_01DF1315E5086CCADAB6F191032318E7" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_4C776604117B8419CD56F1910323AB41" 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_220D2D2BBC3EA5412F4FF1910323AFA2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_4C776604117B8419CD56F1910323AB41" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_220D2D2BBC3EA5412F4FF1910323AFA2" 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_FDA647C8F0BCF2602FE8F1910323F754" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_C236EF0B6B56F3E4910AF19103197761" xlink:to="loc_us-gaap_FairValueByLiabilityClassAxis_FDA647C8F0BCF2602FE8F1910323F754" 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_63DC25B0DE5A46825FF8F191032346A1_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_FDA647C8F0BCF2602FE8F1910323F754" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_63DC25B0DE5A46825FF8F191032346A1_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_63DC25B0DE5A46825FF8F191032346A1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_FDA647C8F0BCF2602FE8F1910323F754" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_63DC25B0DE5A46825FF8F191032346A1" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_ContingentConsiderationLiabilityMember" xlink:label="loc_dakt_ContingentConsiderationLiabilityMember_902D62C491939D5C92AFF191032384BF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_63DC25B0DE5A46825FF8F191032346A1" xlink:to="loc_dakt_ContingentConsiderationLiabilityMember_902D62C491939D5C92AFF191032384BF" 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_C4E6579D120C0ABF8584F1910323F691" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_F80B68B38758C73D5836F1910323A70E" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_C4E6579D120C0ABF8584F1910323F691" 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_9765B6B5F160670EA1CEF1910323E7F7" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_F80B68B38758C73D5836F1910323A70E" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements_9765B6B5F160670EA1CEF1910323E7F7" 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_B8B4BC0B2F694787F933F1910323B7A8" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_F80B68B38758C73D5836F1910323A70E" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_B8B4BC0B2F694787F933F1910323B7A8" 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_08F3E5249191F373B090F191032385B3" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_F80B68B38758C73D5836F1910323A70E" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome_08F3E5249191F373B090F191032385B3" 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_4FB6D731F325DA704FD6E1F918F9B811" 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_C1CB4D78BFE5066DF857E1F918F9CB94" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_4FB6D731F325DA704FD6E1F918F9B811" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_C1CB4D78BFE5066DF857E1F918F9CB94" 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_5A47BDC065F111B5065BE1F918F945B2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_C1CB4D78BFE5066DF857E1F918F9CB94" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_5A47BDC065F111B5065BE1F918F945B2" 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_1285E942B19B5643065EE1F918F9D978_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_5A47BDC065F111B5065BE1F918F945B2" xlink:to="loc_us-gaap_SegmentDomain_1285E942B19B5643065EE1F918F9D978_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_1285E942B19B5643065EE1F918F9D978" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_5A47BDC065F111B5065BE1F918F945B2" xlink:to="loc_us-gaap_SegmentDomain_1285E942B19B5643065EE1F918F9D978" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_LiveEventsMember" xlink:label="loc_dakt_LiveEventsMember_019D6C7464F17A0446A5E1F918F974EF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_1285E942B19B5643065EE1F918F9D978" xlink:to="loc_dakt_LiveEventsMember_019D6C7464F17A0446A5E1F918F974EF" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_CommericalMember" xlink:label="loc_dakt_CommericalMember_4B6C96D72A30E286192EE1F918F9FE87" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_1285E942B19B5643065EE1F918F9D978" xlink:to="loc_dakt_CommericalMember_4B6C96D72A30E286192EE1F918F9FE87" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_TransportationMember" xlink:label="loc_dakt_TransportationMember_A0D44AF8B012B15687F1E1F918F9A705" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_1285E942B19B5643065EE1F918F9D978" xlink:to="loc_dakt_TransportationMember_A0D44AF8B012B15687F1E1F918F9A705" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_InternationalMember" xlink:label="loc_dakt_InternationalMember_A08F566859A0B7A22570E1F918F97DBD" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_1285E942B19B5643065EE1F918F9D978" xlink:to="loc_dakt_InternationalMember_A08F566859A0B7A22570E1F918F97DBD" 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_1FD0B4E3BC2DD03EEAF1E1F918F96CAE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_4FB6D731F325DA704FD6E1F918F9B811" xlink:to="loc_us-gaap_GoodwillRollForward_1FD0B4E3BC2DD03EEAF1E1F918F96CAE" 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_85D8EDB6C2980C676A8AE1F918F96CFF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_1FD0B4E3BC2DD03EEAF1E1F918F96CAE" xlink:to="loc_us-gaap_Goodwill_85D8EDB6C2980C676A8AE1F918F96CFF" 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_DBE65A61BD6EBD1EE026E1F918F93DF1" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_1FD0B4E3BC2DD03EEAF1E1F918F96CAE" xlink:to="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_DBE65A61BD6EBD1EE026E1F918F93DF1" 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_1E1436716464647283A3CC8F9B082F99" 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_D6FA7826DEB571D190BBCC8F9B021196" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_1E1436716464647283A3CC8F9B082F99" xlink:to="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_D6FA7826DEB571D190BBCC8F9B021196" 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_2E0B23FB2FA88B98F3B3CC8F9B079167" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_D6FA7826DEB571D190BBCC8F9B021196" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_2E0B23FB2FA88B98F3B3CC8F9B079167" 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_32FF11B6A64230BCC549CC8F9B071F48_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_2E0B23FB2FA88B98F3B3CC8F9B079167" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_32FF11B6A64230BCC549CC8F9B071F48_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_32FF11B6A64230BCC549CC8F9B071F48" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_2E0B23FB2FA88B98F3B3CC8F9B079167" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_32FF11B6A64230BCC549CC8F9B071F48" 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_04BAC1F6F3268EFF14E0CC8F9B0793BD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_32FF11B6A64230BCC549CC8F9B071F48" xlink:to="loc_us-gaap_CertificatesOfDepositMember_04BAC1F6F3268EFF14E0CC8F9B0793BD" 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_505B3199A4BCADE74218CC8F9B07F38B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_32FF11B6A64230BCC549CC8F9B071F48" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_505B3199A4BCADE74218CC8F9B07F38B" 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_62CAA236453B5E6337C6CC8F9B080B49" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_32FF11B6A64230BCC549CC8F9B071F48" xlink:to="loc_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_62CAA236453B5E6337C6CC8F9B080B49" 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_DF99497472C00712273CCC8F9B0859D4" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_32FF11B6A64230BCC549CC8F9B071F48" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_DF99497472C00712273CCC8F9B0859D4" 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_F9090EEB72535B66214FCC8F9B08276D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_1E1436716464647283A3CC8F9B082F99" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_F9090EEB72535B66214FCC8F9B08276D" 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_B126BD4C9BD731986E2DCC8F9B0880B4" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_1E1436716464647283A3CC8F9B082F99" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_B126BD4C9BD731986E2DCC8F9B0880B4" 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_26DC646FF290996E0816CC8F9B08DA74" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_1E1436716464647283A3CC8F9B082F99" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_26DC646FF290996E0816CC8F9B08DA74" 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_AEAAC8E3C659D4C131F0CC8F9B177A8F" 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_4232BFF5D08EFBC5571ECC8F9B111E5E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_AEAAC8E3C659D4C131F0CC8F9B177A8F" xlink:to="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_4232BFF5D08EFBC5571ECC8F9B111E5E" 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_0BF12D3AB3B368306C6FCC8F9B11F67B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_4232BFF5D08EFBC5571ECC8F9B111E5E" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_0BF12D3AB3B368306C6FCC8F9B11F67B" 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_43B6798C7A322EBF42E9CC8F9B125466_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_0BF12D3AB3B368306C6FCC8F9B11F67B" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_43B6798C7A322EBF42E9CC8F9B125466_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_43B6798C7A322EBF42E9CC8F9B125466" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_0BF12D3AB3B368306C6FCC8F9B11F67B" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_43B6798C7A322EBF42E9CC8F9B125466" 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_C21A7285DDEF7DBDA440CC8F9B12D5CF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_43B6798C7A322EBF42E9CC8F9B125466" xlink:to="loc_us-gaap_CertificatesOfDepositMember_C21A7285DDEF7DBDA440CC8F9B12D5CF" 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_2CED4A46264525688F96CC8F9B1277EF" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_43B6798C7A322EBF42E9CC8F9B125466" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_2CED4A46264525688F96CC8F9B1277EF" 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_AAC1F179E74998137F47CC8F9B175266" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_43B6798C7A322EBF42E9CC8F9B125466" xlink:to="loc_us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember_AAC1F179E74998137F47CC8F9B175266" 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_8669953D28B3ED32560BCC8F9B1766D7" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_43B6798C7A322EBF42E9CC8F9B125466" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_8669953D28B3ED32560BCC8F9B1766D7" 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_CB97A184BB47EC667205CC8F9B170549" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_AEAAC8E3C659D4C131F0CC8F9B177A8F" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_CB97A184BB47EC667205CC8F9B170549" 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_80CBC189ECEA103D429BCC8F9B180BDD" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_AEAAC8E3C659D4C131F0CC8F9B177A8F" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_80CBC189ECEA103D429BCC8F9B180BDD" 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_6D2A51E4E3C8F6032B27CC8F9B18175D" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_AEAAC8E3C659D4C131F0CC8F9B177A8F" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_6D2A51E4E3C8F6032B27CC8F9B18175D" 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_C79D755263A28ACDB211CC8F9B1852D7" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_AEAAC8E3C659D4C131F0CC8F9B177A8F" xlink:to="loc_us-gaap_AvailableForSaleSecurities_C79D755263A28ACDB211CC8F9B1852D7" 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_3B29E37B6F5ED468CDF0CC8F9AA9E870" 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_C727896929F59A796F46CC8F9AA8E1BD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_3B29E37B6F5ED468CDF0CC8F9AA9E870" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_C727896929F59A796F46CC8F9AA8E1BD" 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_24A7BE6767C555AA4355CC8F9AA88F1C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_C727896929F59A796F46CC8F9AA8E1BD" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_24A7BE6767C555AA4355CC8F9AA88F1C" 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_588509693D7A213D33CACC8F9AA84CF6_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_24A7BE6767C555AA4355CC8F9AA88F1C" xlink:to="loc_us-gaap_ReceivableTypeDomain_588509693D7A213D33CACC8F9AA84CF6_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_588509693D7A213D33CACC8F9AA84CF6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_24A7BE6767C555AA4355CC8F9AA88F1C" xlink:to="loc_us-gaap_ReceivableTypeDomain_588509693D7A213D33CACC8F9AA84CF6" 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_7078FEDC2FC110D4AB0FCC8F9AA82112" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_588509693D7A213D33CACC8F9AA84CF6" xlink:to="loc_us-gaap_FinanceReceivablesMember_7078FEDC2FC110D4AB0FCC8F9AA82112" 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_9F664BC67C0FD8FC22B4CC8F9AA96018" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_C727896929F59A796F46CC8F9AA8E1BD" xlink:to="loc_us-gaap_RangeAxis_9F664BC67C0FD8FC22B4CC8F9AA96018" 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_C57B85049D25F5758852CC8F9AA9A78C_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis_9F664BC67C0FD8FC22B4CC8F9AA96018" xlink:to="loc_us-gaap_RangeMember_C57B85049D25F5758852CC8F9AA9A78C_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_C57B85049D25F5758852CC8F9AA9A78C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis_9F664BC67C0FD8FC22B4CC8F9AA96018" xlink:to="loc_us-gaap_RangeMember_C57B85049D25F5758852CC8F9AA9A78C" 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_12AF79C6491E9079BC39CC8F9AA962A5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_C57B85049D25F5758852CC8F9AA9A78C" xlink:to="loc_us-gaap_MinimumMember_12AF79C6491E9079BC39CC8F9AA962A5" 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_930DF58DC26241EC76A0CC8F9AA9EF68" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_C57B85049D25F5758852CC8F9AA9A78C" xlink:to="loc_us-gaap_MaximumMember_930DF58DC26241EC76A0CC8F9AA9EF68" 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_DDFACB2E3E157F3B6FF6CC8F9AA96883" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_3B29E37B6F5ED468CDF0CC8F9AA9E870" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_DDFACB2E3E157F3B6FF6CC8F9AA96883" 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_F7252AE0894706024A68CC8F9AA959E5" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_3B29E37B6F5ED468CDF0CC8F9AA9E870" xlink:to="loc_us-gaap_NotesReceivableNet_F7252AE0894706024A68CC8F9AA959E5" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_LoansAndLeasesReceivableInterestRate" xlink:label="loc_dakt_LoansAndLeasesReceivableInterestRate_E461FB1A433E014ED61ACC8F9AA91721" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_3B29E37B6F5ED468CDF0CC8F9AA9E870" xlink:to="loc_dakt_LoansAndLeasesReceivableInterestRate_E461FB1A433E014ED61ACC8F9AA91721" 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_7E09FC917F3E9DFB3E01CC8F9AA97AA7" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_3B29E37B6F5ED468CDF0CC8F9AA9E870" xlink:to="loc_us-gaap_NotesReceivableGross_7E09FC917F3E9DFB3E01CC8F9AA97AA7" 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_D16F1AF349F5B359C792CC8F9AA95761" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_3B29E37B6F5ED468CDF0CC8F9AA9E870" xlink:to="loc_us-gaap_ContractReceivableRetainageDueOneYearOrLess_D16F1AF349F5B359C792CC8F9AA95761" xlink:type="arc" />
  </link:definitionLink>
  <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_2EA738916ACEC071222EF190D3E92713" 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_04E46BC03D35F5A39B31F190D3E993DB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2EA738916ACEC071222EF190D3E92713" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_04E46BC03D35F5A39B31F190D3E993DB" 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_8B26747AA5D8BDD02901F190D3E9EEB5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_04E46BC03D35F5A39B31F190D3E993DB" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_8B26747AA5D8BDD02901F190D3E9EEB5" 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_5E3C9EC23CE90E139BC1F190D3E94526_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_8B26747AA5D8BDD02901F190D3E9EEB5" xlink:to="loc_us-gaap_SegmentDomain_5E3C9EC23CE90E139BC1F190D3E94526_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_5E3C9EC23CE90E139BC1F190D3E94526" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_8B26747AA5D8BDD02901F190D3E9EEB5" xlink:to="loc_us-gaap_SegmentDomain_5E3C9EC23CE90E139BC1F190D3E94526" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_CommericalMember" xlink:label="loc_dakt_CommericalMember_4DA54F0E74DD006D752EF190D3E91982" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5E3C9EC23CE90E139BC1F190D3E94526" xlink:to="loc_dakt_CommericalMember_4DA54F0E74DD006D752EF190D3E91982" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_LiveEventsMember" xlink:label="loc_dakt_LiveEventsMember_31D909EB2249A9375E96F190D3E96D45" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5E3C9EC23CE90E139BC1F190D3E94526" xlink:to="loc_dakt_LiveEventsMember_31D909EB2249A9375E96F190D3E96D45" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_HighSchoolParkandRecreationMember" xlink:label="loc_dakt_HighSchoolParkandRecreationMember_11C915C56B806C28E153F190D3E97F69" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5E3C9EC23CE90E139BC1F190D3E94526" xlink:to="loc_dakt_HighSchoolParkandRecreationMember_11C915C56B806C28E153F190D3E97F69" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_TransportationMember" xlink:label="loc_dakt_TransportationMember_92102BCE95B1C551E22CF190D3E9240F" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5E3C9EC23CE90E139BC1F190D3E94526" xlink:to="loc_dakt_TransportationMember_92102BCE95B1C551E22CF190D3E9240F" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_InternationalMember" xlink:label="loc_dakt_InternationalMember_FBA19455A8A31C86CC93F190D3E97CE5" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5E3C9EC23CE90E139BC1F190D3E94526" xlink:to="loc_dakt_InternationalMember_FBA19455A8A31C86CC93F190D3E97CE5" 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_73EBE1FF5837BFD39131F190D3E91D88" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5E3C9EC23CE90E139BC1F190D3E94526" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_73EBE1FF5837BFD39131F190D3E91D88" 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_7320725C6411DF3A8CB5F190D3E9C5E9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2EA738916ACEC071222EF190D3E92713" xlink:to="loc_us-gaap_NumberOfReportableSegments_7320725C6411DF3A8CB5F190D3E9C5E9" 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_B8A277BE17D100187D23F190D3E917EF" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2EA738916ACEC071222EF190D3E92713" xlink:to="loc_us-gaap_SalesRevenueNet_B8A277BE17D100187D23F190D3E917EF" xlink:type="arc" />
    <link:loc xlink:href="dakt-20170729.xsd#dakt_ContributionMargin" xlink:label="loc_dakt_ContributionMargin_90D604E3FC24576C88CFF190D3E910F4" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2EA738916ACEC071222EF190D3E92713" xlink:to="loc_dakt_ContributionMargin_90D604E3FC24576C88CFF190D3E910F4" 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_AF7774F9FCC948B2A273F190D3E91B73" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2EA738916ACEC071222EF190D3E92713" xlink:to="loc_us-gaap_DepreciationAndAmortizationAbstract_AF7774F9FCC948B2A273F190D3E91B73" 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_80A0FDC4F06CE9353C06F190D3E9706C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DepreciationAndAmortizationAbstract_AF7774F9FCC948B2A273F190D3E91B73" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_80A0FDC4F06CE9353C06F190D3E9706C" 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_A705A366CE16F6B38259F190D3E94BAF" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2EA738916ACEC071222EF190D3E92713" xlink:to="loc_us-gaap_OperatingExpensesAbstract_A705A366CE16F6B38259F190D3E94BAF" 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_9A877CC3A9EDABFC76D6F190D3E99179" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_A705A366CE16F6B38259F190D3E94BAF" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_9A877CC3A9EDABFC76D6F190D3E99179" 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_E4ABF8A8B8E3283363E0F190D3E90CF4" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_A705A366CE16F6B38259F190D3E94BAF" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_E4ABF8A8B8E3283363E0F190D3E90CF4" 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_4B6426C1D1771E4E84F3F190D3E96892" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2EA738916ACEC071222EF190D3E92713" xlink:to="loc_us-gaap_OperatingIncomeLoss_4B6426C1D1771E4E84F3F190D3E96892" 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_BE7CB1E0133CD57CEA46F190D3E9C546" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2EA738916ACEC071222EF190D3E92713" xlink:to="loc_us-gaap_NonoperatingIncomeExpenseAbstract_BE7CB1E0133CD57CEA46F190D3E9C546" 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_54CAAD49E07AC189306DF190D3E9D4CA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_BE7CB1E0133CD57CEA46F190D3E9C546" xlink:to="loc_us-gaap_InvestmentIncomeNet_54CAAD49E07AC189306DF190D3E9D4CA" 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_3BD597A5E038ED44E249F190D3E95197" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_BE7CB1E0133CD57CEA46F190D3E9C546" xlink:to="loc_us-gaap_InterestExpense_3BD597A5E038ED44E249F190D3E95197" 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_548689C3F739BBB13946F190D3E9C127" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_BE7CB1E0133CD57CEA46F190D3E9C546" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_548689C3F739BBB13946F190D3E9C127" 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_D8EBC0C2884F4E6FF74BF190D3E95A4C" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2EA738916ACEC071222EF190D3E92713" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_D8EBC0C2884F4E6FF74BF190D3E95A4C" 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_E07DB5DC77BF189839FAF190D3E9A59A" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2EA738916ACEC071222EF190D3E92713" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_E07DB5DC77BF189839FAF190D3E9A59A" 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_AAD680AC4D463392CB2DF190D3E9C5A8" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_2EA738916ACEC071222EF190D3E92713" xlink:to="loc_us-gaap_NetIncomeLoss_AAD680AC4D463392CB2DF190D3E9C5A8" 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_89021B209F150EDEC7F9CC8F9B2FE7AC" 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_7F3793635D7CE9535A99CC8F9B2F7607" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_89021B209F150EDEC7F9CC8F9B2FE7AC" xlink:to="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_7F3793635D7CE9535A99CC8F9B2F7607" 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_510221373F2A2EC2F7B3CC8F9B2F8C7E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_7F3793635D7CE9535A99CC8F9B2F7607" xlink:to="loc_us-gaap_StatementGeographicalAxis_510221373F2A2EC2F7B3CC8F9B2F8C7E" 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_3F91D189297DDDC7F47ECC8F9B2F5105_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementGeographicalAxis_510221373F2A2EC2F7B3CC8F9B2F8C7E" xlink:to="loc_us-gaap_SegmentGeographicalDomain_3F91D189297DDDC7F47ECC8F9B2F5105_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_3F91D189297DDDC7F47ECC8F9B2F5105" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementGeographicalAxis_510221373F2A2EC2F7B3CC8F9B2F8C7E" xlink:to="loc_us-gaap_SegmentGeographicalDomain_3F91D189297DDDC7F47ECC8F9B2F5105" 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_A9A597E1345813BA8450CC8F9B2FD929" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentGeographicalDomain_3F91D189297DDDC7F47ECC8F9B2F5105" xlink:to="loc_country_US_A9A597E1345813BA8450CC8F9B2FD929" 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_B8B61E79B52853F33D94CC8F9B2F6363" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentGeographicalDomain_3F91D189297DDDC7F47ECC8F9B2F5105" xlink:to="loc_us-gaap_NonUsMember_B8B61E79B52853F33D94CC8F9B2F6363" 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_68B8D8A76372BFE95179CC8F9B3072F1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_89021B209F150EDEC7F9CC8F9B2FE7AC" xlink:to="loc_us-gaap_GeographicAreasRevenuesFromExternalCustomersAbstract_68B8D8A76372BFE95179CC8F9B3072F1" 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_2AB62102B85F3A86D05CCC8F9B30049F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeographicAreasRevenuesFromExternalCustomersAbstract_68B8D8A76372BFE95179CC8F9B3072F1" xlink:to="loc_us-gaap_Revenues_2AB62102B85F3A86D05CCC8F9B30049F" 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_2D3754FE1F84C7BED8D4CC8F9B30657D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeographicAreasRevenuesFromExternalCustomersAbstract_68B8D8A76372BFE95179CC8F9B3072F1" xlink:to="loc_us-gaap_SalesRevenueNet_2D3754FE1F84C7BED8D4CC8F9B30657D" 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_D7AF1686B6DC8C499855CC8F9B30C846" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_89021B209F150EDEC7F9CC8F9B2FE7AC" xlink:to="loc_us-gaap_GeographicAreasLongLivedAssetsAbstract_D7AF1686B6DC8C499855CC8F9B30C846" 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_17C55E8FF904284BC5FBCC8F9B300AF5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeographicAreasLongLivedAssetsAbstract_D7AF1686B6DC8C499855CC8F9B30C846" xlink:to="loc_us-gaap_NoncurrentAssets_17C55E8FF904284BC5FBCC8F9B300AF5" 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_8EC8D07B7B831F152C920A2914A62395" 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_813292575D7B361D50BA0A2914A6BA3E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_8EC8D07B7B831F152C920A2914A62395" xlink:to="loc_us-gaap_ClassOfTreasuryStockTable_813292575D7B361D50BA0A2914A6BA3E" 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_24E9D4455878094A8A190A2914A6B39D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ClassOfTreasuryStockTable_813292575D7B361D50BA0A2914A6BA3E" xlink:to="loc_us-gaap_StatementClassOfStockAxis_24E9D4455878094A8A190A2914A6B39D" 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_21AB03F66444D845564B0A2914A65001_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_24E9D4455878094A8A190A2914A6B39D" xlink:to="loc_us-gaap_ClassOfStockDomain_21AB03F66444D845564B0A2914A65001_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_21AB03F66444D845564B0A2914A65001" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_24E9D4455878094A8A190A2914A6B39D" xlink:to="loc_us-gaap_ClassOfStockDomain_21AB03F66444D845564B0A2914A65001" 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_7F4613D401A449AB817D0A2914A63CAB" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ClassOfTreasuryStockTable_813292575D7B361D50BA0A2914A6BA3E" xlink:to="loc_us-gaap_ShareRepurchaseProgramAxis_7F4613D401A449AB817D0A2914A63CAB" 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_B8493FFA7D12D853C5AC0A2914A69747_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_7F4613D401A449AB817D0A2914A63CAB" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_B8493FFA7D12D853C5AC0A2914A69747_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_B8493FFA7D12D853C5AC0A2914A69747" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_7F4613D401A449AB817D0A2914A63CAB" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_B8493FFA7D12D853C5AC0A2914A69747" 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_FD370A706A3BCA0237D30A2914A665EA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_8EC8D07B7B831F152C920A2914A62395" xlink:to="loc_us-gaap_StockRepurchaseProgramAuthorizedAmount1_FD370A706A3BCA0237D30A2914A665EA" 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_1923A0D5EE76DF0AD6220A2914A68A3C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_8EC8D07B7B831F152C920A2914A62395" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares_1923A0D5EE76DF0AD6220A2914A68A3C" 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_9E38CE1243D717D809090A2914A60AE9" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_8EC8D07B7B831F152C920A2914A62395" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_9E38CE1243D717D809090A2914A60AE9" 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_2E205C4C11132B5910E10A2914A6D76C" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_8EC8D07B7B831F152C920A2914A62395" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_2E205C4C11132B5910E10A2914A6D76C" 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_D26D09F5A8E0BD5B14D7CC8F9A6B329A" 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_AF5E756AE8C20021D80DCC8F9A6A23DE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_D26D09F5A8E0BD5B14D7CC8F9A6B329A" xlink:to="loc_us-gaap_SubsequentEventTable_AF5E756AE8C20021D80DCC8F9A6A23DE" 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_FBDB5D08EDE626151310CC8F9A6B6685" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_AF5E756AE8C20021D80DCC8F9A6A23DE" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_FBDB5D08EDE626151310CC8F9A6B6685" 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_6D4479994B69306794A5CC8F9A6B5336_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_FBDB5D08EDE626151310CC8F9A6B6685" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_6D4479994B69306794A5CC8F9A6B5336_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_6D4479994B69306794A5CC8F9A6B5336" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_FBDB5D08EDE626151310CC8F9A6B6685" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_6D4479994B69306794A5CC8F9A6B5336" 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_E81E9F21E61B0C6A389CCC8F9A6BC6B3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_6D4479994B69306794A5CC8F9A6B5336" xlink:to="loc_us-gaap_SubsequentEventMember_E81E9F21E61B0C6A389CCC8F9A6BC6B3" 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_398B8B582965DA86BD88CC8F9A6B47C5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_D26D09F5A8E0BD5B14D7CC8F9A6B329A" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_398B8B582965DA86BD88CC8F9A6B47C5" xlink:type="arc" />
  </link:definitionLink>
</link:linkbase>
</XBRL>
