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    <link:label id="lab_astc_MutualFundsFairValue_2B16E484EDACF6ECBDAD9E0DCFDC076E_terseLabel_en-US" xlink:label="lab_astc_MutualFundsFairValue_8C49F50AB6E15C84A3FFBF08FC307DAE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Mutual funds, fair value</link:label>
    <link:label id="lab_astc_MutualFundsFairValue_2B16E484EDACF6ECBDAD9E0DCFDC076E_label_en-US" xlink:label="lab_astc_MutualFundsFairValue_8C49F50AB6E15C84A3FFBF08FC307DAE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mutual Funds Fair Value</link:label>
    <link:label id="lab_astc_MutualFundsFairValue_2B16E484EDACF6ECBDAD9E0DCFDC076E_documentation_en-US" xlink:label="lab_astc_MutualFundsFairValue_8C49F50AB6E15C84A3FFBF08FC307DAE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents amount of fair value for mutual funds.</link:label>
    <link:loc xlink:href="astc-20170930.xsd#astc_MutualFundsFairValue" xlink:label="loc_astc_MutualFundsFairValue_8C49F50AB6E15C84A3FFBF08FC307DAE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_astc_MutualFundsFairValue_8C49F50AB6E15C84A3FFBF08FC307DAE" xlink:to="lab_astc_MutualFundsFairValue_8C49F50AB6E15C84A3FFBF08FC307DAE" xlink:type="arc" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue_E7BE67C1B9865EF69DB7B38E3B31FB69" xlink:type="locator" />
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    <link:label id="lab_astc_HeldtomaturitySecuritiesDebtMaturitiesafterOneThroughThreeYearsFairValue_6095FF3487D1CADC841A9E0DCFDC0D49_terseLabel_en-US" xlink:label="lab_astc_HeldtomaturitySecuritiesDebtMaturitiesafterOneThroughThreeYearsFairValue_62FDE9617CDB5027B3F24B983336F2BF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Held-to-maturity securities, remaining maturities from 1-3 years, fair value</link:label>
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    <link:loc xlink:href="astc-20170930.xsd#astc_HeldtomaturitySecuritiesDebtMaturitiesafterOneThroughThreeYearsFairValue" xlink:label="loc_astc_HeldtomaturitySecuritiesDebtMaturitiesafterOneThroughThreeYearsFairValue_62FDE9617CDB5027B3F24B983336F2BF" xlink:type="locator" />
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    <link:loc xlink:href="astc-20170930.xsd#astc_HeldToMaturitySecuritiesDebtMaturities91To360DaysFairValue" xlink:label="loc_astc_HeldToMaturitySecuritiesDebtMaturities91To360DaysFairValue_4C446E9449AC56D881D2EF1B34135EBB" xlink:type="locator" />
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    <link:label id="lab_us-gaap_Investments_9A7A9352D99A00BF5A3C9E0DCFDC289C_totalLabel_en-US" xlink:label="lab_us-gaap_Investments_D9E3857E8D54524785907D570E45A342" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Investments</link:label>
    <link:label id="lab_us-gaap_Investments_9A7A9352D99A00BF5A3C9E0DCFDC289C_label_en-US" xlink:label="lab_us-gaap_Investments_D9E3857E8D54524785907D570E45A342" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Investments" xlink:label="loc_us-gaap_Investments_D9E3857E8D54524785907D570E45A342" xlink:type="locator" />
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    <link:label id="lab_us-gaap_InvestmentsFairValueDisclosure_37126215D502CD2EEB879E0DCFDC6E97_totalLabel_en-US" xlink:label="lab_us-gaap_InvestmentsFairValueDisclosure_BF3C635A80F351FC8F96B1127BB1F51D" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Investments, fair value</link:label>
    <link:label id="lab_us-gaap_InvestmentsFairValueDisclosure_37126215D502CD2EEB879E0DCFDC6E97_label_en-US" xlink:label="lab_us-gaap_InvestmentsFairValueDisclosure_BF3C635A80F351FC8F96B1127BB1F51D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments, Fair Value Disclosure</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InvestmentsFairValueDisclosure" xlink:label="loc_us-gaap_InvestmentsFairValueDisclosure_BF3C635A80F351FC8F96B1127BB1F51D" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncomeAmountsAttributableToReportingEntityDisclosuresAbstract_7F93D16D2BAB267FE7BE4FD65830CFA7_verboseLabel_en-US" xlink:label="lab_us-gaap_IncomeAmountsAttributableToReportingEntityDisclosuresAbstract_BEA14EB7D887512BA28B949E94F44EA2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Numerator:</link:label>
    <link:label id="lab_us-gaap_IncomeAmountsAttributableToReportingEntityDisclosuresAbstract_7F93D16D2BAB267FE7BE4FD65830CFA7_label_en-US" xlink:label="lab_us-gaap_IncomeAmountsAttributableToReportingEntityDisclosuresAbstract_BEA14EB7D887512BA28B949E94F44EA2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Amounts Attributable to Parent, Disclosures [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeAmountsAttributableToReportingEntityDisclosuresAbstract" xlink:label="loc_us-gaap_IncomeAmountsAttributableToReportingEntityDisclosuresAbstract_BEA14EB7D887512BA28B949E94F44EA2" xlink:type="locator" />
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    <link:label id="lab_astc_AmountsAttributableToParentBasicAndDilutedAbstract_ECF1FEAC59FB6F77B65D4FD65830F264_terseLabel_en-US" xlink:label="lab_astc_AmountsAttributableToParentBasicAndDilutedAbstract_B40FF6CCA3A9591284AC1C18E928D97B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amounts attributable to Astrotech Corporation, basic and diluted:</link:label>
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    <link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_B4F381CC8AA171B14D244FD65831298B_negatedLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_38955DD4D2DF5F2AB4AA92E1BA138563" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Income tax benefit</link:label>
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