<?xml version="1.0" encoding="US-ASCII"?>
<!-- Generated by CompSci Transform (tm) - http://www.compsciresources.com -->
<!-- Created: Thu Aug 17 06:01:18 UTC 2023 -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:xbrldt="http://xbrl.org/2005/xbrldt">
  <roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#PvpAdjustmentsOnly" roleURI="http://xbrl.sec.gov/ecd/role/PvpAdjustmentsOnly"/>
  <roleRef xlink:type="simple" xlink:href="avav-20230430.xsd#avav_r_AdditionalDimensions" roleURI="http://www.avinc.com/role/AdditionalDimensions"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all"/>
  <definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/ecd/role/PvpAdjustmentsOnly">
    <loc xlink:type="locator" xlink:label="ecd_AllAdjToCompMember" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#ecd_AllAdjToCompMember"/>
    <loc xlink:type="locator" xlink:label="avav_NetAdjustmentsForEquityAwardsMember" xlink:href="avav-20230430.xsd#avav_NetAdjustmentsForEquityAwardsMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ecd_AllAdjToCompMember" xlink:to="avav_NetAdjustmentsForEquityAwardsMember" order="1" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="avav_EquityAwardsValueInCompensationTableForTheApplicableYearMember" xlink:href="avav-20230430.xsd#avav_EquityAwardsValueInCompensationTableForTheApplicableYearMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="avav_NetAdjustmentsForEquityAwardsMember" xlink:to="avav_EquityAwardsValueInCompensationTableForTheApplicableYearMember" order="1" xbrldt:closed="true"/>
<!-- [WMV5][XcpuxYn59dz7vgYynUDuwG7r97K2jUTysl7vcz0lJt/tC7CvZHOJjSUEJbYlSz0QmT1AzchKAjg5AqVJioVI5Jp+QaTfzMJBlkgyffHdzHCunyy/Bvbq/vAaWcdVX8WzHhzg9SQCnK4tl6Kb+1xmxElbyOEIbXpYfhtlc++MhVBrXqf4XJ6xeGvsOaJaFesDDWAVf7mNuZgnIUnqgOqAno4tEdRlxTfeQIfAC4bNHz/qHR8/VOIpA2QX7NBoAT6wU4wwjSaF/Ok=] CSR-->
    <loc xlink:type="locator" xlink:label="avav_EquityAwardsAdjustmentsMember" xlink:href="avav-20230430.xsd#avav_EquityAwardsAdjustmentsMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="avav_NetAdjustmentsForEquityAwardsMember" xlink:to="avav_EquityAwardsAdjustmentsMember" order="2" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="avav_EquityAwardsAdjustmentsYearEndFairValueOfAwardsGrantedInCurrentYearMember" xlink:href="avav-20230430.xsd#avav_EquityAwardsAdjustmentsYearEndFairValueOfAwardsGrantedInCurrentYearMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="avav_EquityAwardsAdjustmentsMember" xlink:to="avav_EquityAwardsAdjustmentsYearEndFairValueOfAwardsGrantedInCurrentYearMember" order="1" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="avav_EquityAwardsAdjustmentsChangeInFairValueAsOfYearEndOfOutstandingAndUnvestedAwardsGrantedInPriorYearsMember" xlink:href="avav-20230430.xsd#avav_EquityAwardsAdjustmentsChangeInFairValueAsOfYearEndOfOutstandingAndUnvestedAwardsGrantedInPriorYearsMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="avav_EquityAwardsAdjustmentsMember" xlink:to="avav_EquityAwardsAdjustmentsChangeInFairValueAsOfYearEndOfOutstandingAndUnvestedAwardsGrantedInPriorYearsMember" order="2" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="avav_EquityAwardsAdjustmentsChangeInFairValueAsOfVestingDateOfVestedAwardsDuringCurrentYearMember" xlink:href="avav-20230430.xsd#avav_EquityAwardsAdjustmentsChangeInFairValueAsOfVestingDateOfVestedAwardsDuringCurrentYearMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="avav_EquityAwardsAdjustmentsMember" xlink:to="avav_EquityAwardsAdjustmentsChangeInFairValueAsOfVestingDateOfVestedAwardsDuringCurrentYearMember" order="3" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="avav_EquityAwardsAdjustmentsChangeInFairValueAsOfVestingDateOfCurrentAwardsVestedDuringCurrentYearMember" xlink:href="avav-20230430.xsd#avav_EquityAwardsAdjustmentsChangeInFairValueAsOfVestingDateOfCurrentAwardsVestedDuringCurrentYearMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="avav_EquityAwardsAdjustmentsChangeInFairValueAsOfVestingDateOfVestedAwardsDuringCurrentYearMember" xlink:to="avav_EquityAwardsAdjustmentsChangeInFairValueAsOfVestingDateOfCurrentAwardsVestedDuringCurrentYearMember" order="1" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="avav_ChangeInFairValueAsOfVestingDateOfOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsForWhichApplicableVestingConditionsWereSatisfiedDuringFiscalYearMember" xlink:href="avav-20230430.xsd#avav_ChangeInFairValueAsOfVestingDateOfOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsForWhichApplicableVestingConditionsWereSatisfiedDuringFiscalYearMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ecd_AllAdjToCompMember" xlink:to="avav_ChangeInFairValueAsOfVestingDateOfOptionAwardsAndStockAwardsGrantedInPriorFiscalYearsForWhichApplicableVestingConditionsWereSatisfiedDuringFiscalYearMember" order="2" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="avav_EquityAwardsAdjustmentsAdjustmentsForEquityAwardsFailedToMeetPerformanceConditionsMember" xlink:href="avav-20230430.xsd#avav_EquityAwardsAdjustmentsAdjustmentsForEquityAwardsFailedToMeetPerformanceConditionsMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="avav_EquityAwardsAdjustmentsMember" xlink:to="avav_EquityAwardsAdjustmentsAdjustmentsForEquityAwardsFailedToMeetPerformanceConditionsMember" order="4" xbrldt:closed="true"/>
  </definitionLink>
  <definitionLink xlink:type="extended" xlink:role="http://www.avinc.com/role/AdditionalDimensions"/>
</linkbase>
