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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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          <link:definition>999060 - Disclosure - LEASES (Details Narrative)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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        <link:roleType roleURI="http://pro-dex.com/role/CommitmentsAndContingenciesDetailsNarrative" id="CommitmentsAndContingenciesDetailsNarrative">
          <link:definition>999061 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details Narrative)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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        <link:roleType roleURI="http://pro-dex.com/role/Share-basedCompensationDetails" id="Share-basedCompensationDetails">
          <link:definition>999062 - Disclosure - SHARE-BASED COMPENSATION (Details)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://pro-dex.com/role/Share-basedCompensationDetails1" id="Share-basedCompensationDetails1">
          <link:definition>999063 - Disclosure - SHARE-BASED COMPENSATION (Details 1)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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        <link:roleType roleURI="http://pro-dex.com/role/Share-basedCompensationDetailsNarrative" id="Share-basedCompensationDetailsNarrative">
          <link:definition>999064 - Disclosure - SHARE-BASED COMPENSATION (Details Narrative)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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        <link:roleType roleURI="http://pro-dex.com/role/MajorCustomersSuppliersDetails" id="MajorCustomersSuppliersDetails">
          <link:definition>999065 - Disclosure - MAJOR CUSTOMERS &amp; SUPPLIERS (Details)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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        <link:roleType roleURI="http://pro-dex.com/role/MajorCustomersSuppliersDetails1" id="MajorCustomersSuppliersDetails1">
          <link:definition>999066 - Disclosure - MAJOR CUSTOMERS &amp; SUPPLIERS (Details 1)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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        <link:roleType roleURI="http://pro-dex.com/role/NetIncomePerShareDetails" id="NetIncomePerShareDetails">
          <link:definition>999067 - Disclosure - NET INCOME PER SHARE (Details)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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        <link:roleType roleURI="http://pro-dex.com/role/CommonStockShareRepurchaseProgramDetailsNarrative" id="CommonStockShareRepurchaseProgramDetailsNarrative">
          <link:definition>999068 - Disclosure - COMMON STOCK &#8211; Share Repurchase Program (Details Narrative)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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    <element id="pdex_DeferredTaxAssetLiabilitiesNet" name="DeferredTaxAssetLiabilitiesNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositionsOnFederalTax" name="UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositionsOnFederalTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositionsUponStateTax" name="UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositionsUponStateTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPosition" name="UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPosition" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_UnrecognizedTaxBenefit" name="UnrecognizedTaxBenefit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_BalloonPayment" name="BalloonPayment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_PercentageOfLatePaymentFee" name="PercentageOfLatePaymentFee" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_IncreasedPercentageOfDefaultLatePayment" name="IncreasedPercentageOfDefaultLatePayment" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_OperatingLeaseLiabilities" name="OperatingLeaseLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_LeaseAndRentalExpenses" name="LeaseAndRentalExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_DefinedContributionPlanEmployeeContributionPercentageOfEmployeeCompensationMaximum" name="DefinedContributionPlanEmployeeContributionPercentageOfEmployeeCompensationMaximum" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_ForfeitedMatchContributionsUsedToReduceMatchExpense" name="ForfeitedMatchContributionsUsedToReduceMatchExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInPeriodWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInPeriodWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsForfeitedWeightedAverageGrantDateFairValue" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsForfeitedWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInPeriod" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriod" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_PercentageOfConcentrationsRisk" name="PercentageOfConcentrationsRisk" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_WeightedaverageShareOutstanding" name="WeightedaverageShareOutstanding" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_WeightedaverageSharesOutstanding" name="WeightedaverageSharesOutstanding" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_WeightedaverageSharesUsedInCalculationOfDilutedEarningsPerShare" name="WeightedaverageSharesUsedInCalculationOfDilutedEarningsPerShare" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
</schema>
