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<!-- Generated by DFIN XBRL Schema Document - http://www.dfinsolutions.com/ - on 04-09-2026 06:30:44 AM -->
<!-- Copyright(c) 2026 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<schema targetNamespace="http://fpa.com/20260903" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:imstiii="http://fpa.com/20260903" xmlns:dei="http://xbrl.sec.gov/dei/2025" xmlns:srt-types="http://fasb.org/srt-types/2025" xmlns:deprecated="http://www.xbrl.org/2009/role/deprecated" xmlns:dtr="http://www.xbrl.org/2009/dtr" xmlns:oef="http://xbrl.sec.gov/oef/2025" xmlns:ref="http://www.xbrl.org/2006/ref" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:us-gaap="http://fasb.org/us-gaap/2025" xmlns:oef-pre="http://xbrl.sec.gov/oef-pre/2025" xmlns:oef-lab="http://xbrl.sec.gov/oef-lab/2025" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:country="http://xbrl.sec.gov/country/2025" xmlns:us-roles="http://fasb.org/us-roles/2025" xmlns:enum2="http://xbrl.org/2020/extensible-enumerations-2.0" xmlns:us-types="http://fasb.org/us-types/2025" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:oef-def="http://xbrl.sec.gov/oef-def/2025" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:srt="http://fasb.org/srt/2025" xmlns:oef-sr="http://xbrl.sec.gov/oef-sr/2025" xmlns:srt-roles="http://fasb.org/srt-roles/2025" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:stpr="http://xbrl.sec.gov/stpr/2025" elementFormDefault="qualified">
	<import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
	<import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
	<import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd"/>
	<import namespace="http://fasb.org/us-types/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-types-2025.xsd"/>
	<import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>   
	<import namespace="http://xbrl.sec.gov/country/2025" schemaLocation="https://xbrl.sec.gov/country/2025/country-2025.xsd"/>
	<import namespace="http://fasb.org/srt/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd"/>
	<import namespace="http://fasb.org/srt-types/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-types-2025.xsd"/>
	<import namespace="http://xbrl.sec.gov/oef-sr/2025" schemaLocation="https://xbrl.sec.gov/oef/2025/oef-sr-2025.xsd"/>
	<import namespace="http://fasb.org/us-gaap/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd"/>
	<import namespace="http://fasb.org/us-roles/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-roles-2025.xsd"/>
	<import namespace="http://fasb.org/srt-roles/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-roles-2025.xsd"/>
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				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReport" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReport"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReportHoldingsDetails" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReportHoldingsDetails"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReportLineGraphDetails" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReportLineGraphDetails"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReportAverageAnnualReturnDetails" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderReportAverageAnnualReturnDetails"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ClassOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ClassOnly"/>
				<link:roleRef roleURI="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-roles-2025.xsd#eedm"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/LargestHoldingOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#LargestHoldingOnly"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/Other1CategoryOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#Other1CategoryOnly"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#AdditionalIndexOnly"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/BroadBasedIndexOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#BroadBasedIndexOnly"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/Other2CategoryOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#Other2CategoryOnly"/>
				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/SalesLoadOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#SalesLoadOnly"/>
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				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/IndustrySectorOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#IndustrySectorOnly"/>
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				<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/GeographicRegionOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#GeographicRegionOnly"/>
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					<link:loc xlink:type="locator" xlink:href="#imstiii_SecuritiesSoldShortMember" xlink:label="SecuritiesSoldShortMember"/>
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					<link:loc xlink:type="locator" xlink:href="#imstiii_OtherAssetsInExcessOfLiabilitiesMember" xlink:label="OtherAssetsInExcessOfLiabilitiesMember"/>
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					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LargestHoldingsDomain" xlink:to="USTreasuryNote362512312030Member" order="14.0"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_USTreasuryNote12504152031Member" xlink:label="USTreasuryNote12504152031Member"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LargestHoldingsDomain" xlink:to="USTreasuryNote12504152031Member" order="15.0"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_USTreasuryNote350011302030Member" xlink:label="USTreasuryNote350011302030Member"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LargestHoldingsDomain" xlink:to="USTreasuryNote350011302030Member" order="16.0"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_JPMorganMortgageTrustSeries20221ClassA425007252052Member" xlink:label="JPMorganMortgageTrustSeries20221ClassA425007252052Member"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LargestHoldingsDomain" xlink:to="JPMorganMortgageTrustSeries20221ClassA425007252052Member" order="17.0"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_FannieMaePool1000312037Member" xlink:label="FannieMaePool1000312037Member"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LargestHoldingsDomain" xlink:to="FannieMaePool1000312037Member" order="18.0"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_FreddieMacPool1500312041Member" xlink:label="FreddieMacPool1500312041Member"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LargestHoldingsDomain" xlink:to="FreddieMacPool1500312041Member" order="19.0"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_SCERecoveryFundingLLC44533152036Member" xlink:label="SCERecoveryFundingLLC44533152036Member"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="LargestHoldingsDomain" xlink:to="SCERecoveryFundingLLC44533152036Member" order="20.0"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/SalesLoadOnly">
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_WithSalesLoadMember" xlink:label="WithSalesLoadMember"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists">               
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="InvestmentTypeCategorizationMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_SecuritiesSoldShortMember" xlink:label="SecuritiesSoldShortMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="SecuritiesSoldShortMember" order="1.0"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_OtherAssetsInExcessOfLiabilitiesMember" xlink:label="OtherAssetsInExcessOfLiabilitiesMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="OtherAssetsInExcessOfLiabilitiesMember" order="2.0"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_LimitedPartnershipsMember" xlink:label="LimitedPartnershipsMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="LimitedPartnershipsMember" order="3.0"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_ClosedEndFundsMember" xlink:label="ClosedEndFundsMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="ClosedEndFundsMember" order="4.0"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_BondsAndDebenturesMember" xlink:label="BondsAndDebenturesMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="BondsAndDebenturesMember" order="5.0"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermInvestmentsMember" xlink:label="ShortTermInvestmentsMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="ShortTermInvestmentsMember" order="6.0"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ResidentialMortgageBackedSecuritiesMember" xlink:label="ResidentialMortgageBackedSecuritiesMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="ResidentialMortgageBackedSecuritiesMember" order="7.0"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommercialMortgageBackedSecuritiesMember" xlink:label="CommercialMortgageBackedSecuritiesMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="CommercialMortgageBackedSecuritiesMember" order="8.0"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_USTreasuryNotesAndBondsMember" xlink:label="USTreasuryNotesAndBondsMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="USTreasuryNotesAndBondsMember" order="9.0"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_CorporateBankDebtMember" xlink:label="CorporateBankDebtMember"/>
					<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="CorporateBankDebtMember" order="10.0"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/BroadBasedIndexOnly">               
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_BroadBasedIndexDomain" xlink:label="BroadBasedIndexDomain"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly">              
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_AdditionalIndexDomain" xlink:label="AdditionalIndexDomain"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/MaturityOnly">
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_MaturityDomain" xlink:label="MaturityDomain"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/IndustrySectorOnly">
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_IndustrySectorDomain" xlink:label="IndustrySectorDomain"/>
				</link:definitionLink>
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/CreditQualityOnly">
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_CreditQualityDomain" xlink:label="CreditQualityDomain"/>
				</link:definitionLink>
				<!--GeographicRegionOnly use only for STPR-->
				<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/GeographicRegionOnly">
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_GeographicRegionDomain" xlink:label="GeographicRegionDomain"/>
				</link:definitionLink>
				<link:labelLink xlink:type="extended" xlink:role="http://www.xbrl.org/2003/role/link">               
					<link:loc xlink:type="locator" xlink:href="#imstiii_TEConnectivityLtdMember" xlink:label="TEConnectivityLtdMember"/>
					<link:label xlink:type="resource" xlink:label="label_TEConnectivityLtdMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">TE Connectivity Ltd [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TEConnectivityLtdMember" xlink:to="label_TEConnectivityLtdMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_SafranSAMember" xlink:label="SafranSAMember"/>
					<link:label xlink:type="resource" xlink:label="label_SafranSAMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Safran S A [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SafranSAMember" xlink:to="label_SafranSAMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_AzelisGroupNVMember" xlink:label="AzelisGroupNVMember"/>
					<link:label xlink:type="resource" xlink:label="label_AzelisGroupNVMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Azelis Group N V [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AzelisGroupNVMember" xlink:to="label_AzelisGroupNVMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_HeinekenHoldingNVMember" xlink:label="HeinekenHoldingNVMember"/>
					<link:label xlink:type="resource" xlink:label="label_HeinekenHoldingNVMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Heineken Holding N V [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="HeinekenHoldingNVMember" xlink:to="label_HeinekenHoldingNVMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_SecuritiesSoldShortMember" xlink:label="SecuritiesSoldShortMember"/>
					<link:label xlink:type="resource" xlink:label="label_SecuritiesSoldShortMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Securities Sold Short [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecuritiesSoldShortMember" xlink:to="label_SecuritiesSoldShortMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_OtherAssetsInExcessOfLiabilitiesMember" xlink:label="OtherAssetsInExcessOfLiabilitiesMember"/>
					<link:label xlink:type="resource" xlink:label="label_OtherAssetsInExcessOfLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Other Assets in Excess of Liabilities [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAssetsInExcessOfLiabilitiesMember" xlink:to="label_OtherAssetsInExcessOfLiabilitiesMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_LimitedPartnershipsMember" xlink:label="LimitedPartnershipsMember"/>
					<link:label xlink:type="resource" xlink:label="label_LimitedPartnershipsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Limited Partnerships [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LimitedPartnershipsMember" xlink:to="label_LimitedPartnershipsMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_ClosedEndFundsMember" xlink:label="ClosedEndFundsMember"/>
					<link:label xlink:type="resource" xlink:label="label_ClosedEndFundsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Closed End Funds [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClosedEndFundsMember" xlink:to="label_ClosedEndFundsMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_BondsAndDebenturesMember" xlink:label="BondsAndDebenturesMember"/>
					<link:label xlink:type="resource" xlink:label="label_BondsAndDebenturesMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Bonds And Debentures [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BondsAndDebenturesMember" xlink:to="label_BondsAndDebenturesMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_MetaPlatformsIncClassAMember" xlink:label="MetaPlatformsIncClassAMember"/>
					<link:label xlink:type="resource" xlink:label="label_MetaPlatformsIncClassAMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Meta Platforms Inc Class A [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MetaPlatformsIncClassAMember" xlink:to="label_MetaPlatformsIncClassAMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_InternationalFlavorsAndFragrancesIncMember" xlink:label="InternationalFlavorsAndFragrancesIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_InternationalFlavorsAndFragrancesIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">International Flavors And Fragrances Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InternationalFlavorsAndFragrancesIncMember" xlink:to="label_InternationalFlavorsAndFragrancesIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_CitigroupIncMember" xlink:label="CitigroupIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_CitigroupIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Citigroup Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CitigroupIncMember" xlink:to="label_CitigroupIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_AlphabetIncClassCMember" xlink:label="AlphabetIncClassCMember"/>
					<link:label xlink:type="resource" xlink:label="label_AlphabetIncClassCMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Alphabet Inc Class C [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AlphabetIncClassCMember" xlink:to="label_AlphabetIncClassCMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_AlphabetIncClassAMember" xlink:label="AlphabetIncClassAMember"/>
					<link:label xlink:type="resource" xlink:label="label_AlphabetIncClassAMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Alphabet Inc Class A [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AlphabetIncClassAMember" xlink:to="label_AlphabetIncClassAMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_AnalogDevicesIncMember" xlink:label="AnalogDevicesIncMember"/>
					<link:label xlink:type="resource" xlink:label="label_AnalogDevicesIncMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Analog Devices Inc [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AnalogDevicesIncMember" xlink:to="label_AnalogDevicesIncMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_C000221940Member" xlink:label="C000221940Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000221940Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000221940 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000221940Member" xlink:to="label_C000221940Member"/>
										<link:label xlink:type="resource" xlink:label="label_C000221940Member_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xml:lang="en-US">Supra Institutional Class</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000221940Member" xlink:to="label_C000221940Member_2"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_C000249813Member" xlink:label="C000249813Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000249813Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000249813 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000249813Member" xlink:to="label_C000249813Member"/>
										<link:label xlink:type="resource" xlink:label="label_C000249813Member_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xml:lang="en-US">Investor Class</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000249813Member" xlink:to="label_C000249813Member_2"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_C000025975Member" xlink:label="C000025975Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000025975Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000025975 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000025975Member" xlink:to="label_C000025975Member"/>
										<link:label xlink:type="resource" xlink:label="label_C000025975Member_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xml:lang="en-US">Institutional Class</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000025975Member" xlink:to="label_C000025975Member_2"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TechnologySectorMember" xlink:label="TechnologySectorMember"/>
					<link:label xlink:type="resource" xlink:label="label_TechnologySectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Technology Sector [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TechnologySectorMember" xlink:to="label_TechnologySectorMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RealEstateSectorMember" xlink:label="RealEstateSectorMember"/>
					<link:label xlink:type="resource" xlink:label="label_RealEstateSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Real Estate Sector [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RealEstateSectorMember" xlink:to="label_RealEstateSectorMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HealthcareSectorMember" xlink:label="HealthcareSectorMember"/>
					<link:label xlink:type="resource" xlink:label="label_HealthcareSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Healthcare Sector [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="HealthcareSectorMember" xlink:to="label_HealthcareSectorMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancialServicesSectorMember" xlink:label="FinancialServicesSectorMember"/>
					<link:label xlink:type="resource" xlink:label="label_FinancialServicesSectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Financial Services Sector [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FinancialServicesSectorMember" xlink:to="label_FinancialServicesSectorMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EnergySectorMember" xlink:label="EnergySectorMember"/>
					<link:label xlink:type="resource" xlink:label="label_EnergySectorMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Energy Sector [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EnergySectorMember" xlink:to="label_EnergySectorMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WarrantMember" xlink:label="WarrantMember"/>
					<link:label xlink:type="resource" xlink:label="label_WarrantMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Warrant [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantMember" xlink:to="label_WarrantMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockMember" xlink:label="CommonStockMember"/>
					<link:label xlink:type="resource" xlink:label="label_CommonStockMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Common Stock [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockMember" xlink:to="label_CommonStockMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermInvestmentsMember" xlink:label="ShortTermInvestmentsMember"/>
					<link:label xlink:type="resource" xlink:label="label_ShortTermInvestmentsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Short-Term Investments [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShortTermInvestmentsMember" xlink:to="label_ShortTermInvestmentsMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateBondSecuritiesMember" xlink:label="CorporateBondSecuritiesMember"/>
					<link:label xlink:type="resource" xlink:label="label_CorporateBondSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Corporate Bond Securities [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CorporateBondSecuritiesMember" xlink:to="label_CorporateBondSecuritiesMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockMember" xlink:label="PreferredStockMember"/>
					<link:label xlink:type="resource" xlink:label="label_PreferredStockMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Preferred Stock [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreferredStockMember" xlink:to="label_PreferredStockMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetBackedSecuritiesMember" xlink:label="AssetBackedSecuritiesMember"/>
					<link:label xlink:type="resource" xlink:label="label_AssetBackedSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Asset-Backed Securities [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetBackedSecuritiesMember" xlink:to="label_AssetBackedSecuritiesMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ResidentialMortgageBackedSecuritiesMember" xlink:label="ResidentialMortgageBackedSecuritiesMember"/>
					<link:label xlink:type="resource" xlink:label="label_ResidentialMortgageBackedSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Residential Mortgage-Backed Securities [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ResidentialMortgageBackedSecuritiesMember" xlink:to="label_ResidentialMortgageBackedSecuritiesMember"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommercialMortgageBackedSecuritiesMember" xlink:label="CommercialMortgageBackedSecuritiesMember"/>
					<link:label xlink:type="resource" xlink:label="label_CommercialMortgageBackedSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Commercial Mortgage-Backed Securities [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommercialMortgageBackedSecuritiesMember" xlink:to="label_CommercialMortgageBackedSecuritiesMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_C000227168Member" xlink:label="C000227168Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000227168Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000227168 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000227168Member" xlink:to="label_C000227168Member"/>
										<link:label xlink:type="resource" xlink:label="label_C000227168Member_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xml:lang="en-US">Advisor Class</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000227168Member" xlink:to="label_C000227168Member_2"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_C000207154Member" xlink:label="C000207154Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000207154Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000207154 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000207154Member" xlink:to="label_C000207154Member"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_C000262097Member" xlink:label="C000262097Member"/>
					<link:label xlink:type="resource" xlink:label="label_C000262097Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">C000262097 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="C000262097Member" xlink:to="label_C000262097Member"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_USTreasuryNotesAndBondsMember" xlink:label="USTreasuryNotesAndBondsMember"/>
					<link:label xlink:type="resource" xlink:label="label_USTreasuryNotesAndBondsMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">U S Treasury Notes And Bonds [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USTreasuryNotesAndBondsMember" xlink:to="label_USTreasuryNotesAndBondsMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_CorporateBankDebtMember" xlink:label="CorporateBankDebtMember"/>
					<link:label xlink:type="resource" xlink:label="label_CorporateBankDebtMember" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Corporate Bank Debt [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CorporateBankDebtMember" xlink:to="label_CorporateBankDebtMember"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_USTreasuryNote38754302031Member" xlink:label="USTreasuryNote38754302031Member"/>
					<link:label xlink:type="resource" xlink:label="label_USTreasuryNote38754302031Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">U S Treasury Note 3 875 4 30 2031 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USTreasuryNote38754302031Member" xlink:to="label_USTreasuryNote38754302031Member"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_USTreasuryNote35002282031Member" xlink:label="USTreasuryNote35002282031Member"/>
					<link:label xlink:type="resource" xlink:label="label_USTreasuryNote35002282031Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">U S Treasury Note 3 500 2 28 2031 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USTreasuryNote35002282031Member" xlink:to="label_USTreasuryNote35002282031Member"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_USTreasuryNote37501312031Member" xlink:label="USTreasuryNote37501312031Member"/>
					<link:label xlink:type="resource" xlink:label="label_USTreasuryNote37501312031Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">U S Treasury Note 3 750 1 31 2031 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USTreasuryNote37501312031Member" xlink:to="label_USTreasuryNote37501312031Member"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_USTreasuryNote362512312030Member" xlink:label="USTreasuryNote362512312030Member"/>
					<link:label xlink:type="resource" xlink:label="label_USTreasuryNote362512312030Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">U S Treasury Note 3 625 12 31 2030 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USTreasuryNote362512312030Member" xlink:to="label_USTreasuryNote362512312030Member"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_USTreasuryNote12504152031Member" xlink:label="USTreasuryNote12504152031Member"/>
					<link:label xlink:type="resource" xlink:label="label_USTreasuryNote12504152031Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">U S Treasury Note 1 250 4 15 2031 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USTreasuryNote12504152031Member" xlink:to="label_USTreasuryNote12504152031Member"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_USTreasuryNote350011302030Member" xlink:label="USTreasuryNote350011302030Member"/>
					<link:label xlink:type="resource" xlink:label="label_USTreasuryNote350011302030Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">U S Treasury Note 3 500 11 30 2030 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USTreasuryNote350011302030Member" xlink:to="label_USTreasuryNote350011302030Member"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_JPMorganMortgageTrustSeries20221ClassA425007252052Member" xlink:label="JPMorganMortgageTrustSeries20221ClassA425007252052Member"/>
					<link:label xlink:type="resource" xlink:label="label_JPMorganMortgageTrustSeries20221ClassA425007252052Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">J P Morgan Mortgage Trust Series 2022 1 Class A4 2 500 7 25 2052 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="JPMorganMortgageTrustSeries20221ClassA425007252052Member" xlink:to="label_JPMorganMortgageTrustSeries20221ClassA425007252052Member"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_FannieMaePool1000312037Member" xlink:label="FannieMaePool1000312037Member"/>
					<link:label xlink:type="resource" xlink:label="label_FannieMaePool1000312037Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Fannie Mae Pool 1 000 3 1 2037 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FannieMaePool1000312037Member" xlink:to="label_FannieMaePool1000312037Member"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_FreddieMacPool1500312041Member" xlink:label="FreddieMacPool1500312041Member"/>
					<link:label xlink:type="resource" xlink:label="label_FreddieMacPool1500312041Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Freddie Mac Pool 1 500 3 1 2041 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FreddieMacPool1500312041Member" xlink:to="label_FreddieMacPool1500312041Member"/>
					<link:loc xlink:type="locator" xlink:href="#imstiii_SCERecoveryFundingLLC44533152036Member" xlink:label="SCERecoveryFundingLLC44533152036Member"/>
					<link:label xlink:type="resource" xlink:label="label_SCERecoveryFundingLLC44533152036Member" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">SCE Recovery Funding LLC 4 453 3 15 2036 [Member]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SCERecoveryFundingLLC44533152036Member" xlink:to="label_SCERecoveryFundingLLC44533152036Member"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentTypeAxis" xlink:label="InvestmentTypeAxis"/>
					<link:label xlink:type="resource" xlink:label="label_InvestmentTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Investment Type [Axis]</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentTypeAxis" xlink:to="label_InvestmentTypeAxis" priority="1"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsNet" xlink:label="AssetsNet"/>
					<link:label xlink:type="resource" xlink:label="label_AssetsNet" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Net Assets</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsNet" xlink:to="label_AssetsNet" priority="1"/>
					<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentCompanyPortfolioTurnover" xlink:label="InvestmentCompanyPortfolioTurnover"/>
					<link:label xlink:type="resource" xlink:label="label_InvestmentCompanyPortfolioTurnover" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">Investment Company Portfolio Turnover</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentCompanyPortfolioTurnover" xlink:to="label_InvestmentCompanyPortfolioTurnover" priority="1"/>                
					<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_NoTradingSymbolFlag" xlink:label="dei_NoTradingSymbolFlag"/>
					<link:label xlink:type="resource" xlink:label="label_NoTradingSymbolFlag" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US">No Trading Symbol Flag</link:label>
					<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_NoTradingSymbolFlag" xlink:to="label_NoTradingSymbolFlag" priority="1"/>		
				</link:labelLink>
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	</annotation>   
	<element name="TEConnectivityLtdMember" id="imstiii_TEConnectivityLtdMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="SafranSAMember" id="imstiii_SafranSAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="AzelisGroupNVMember" id="imstiii_AzelisGroupNVMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="HeinekenHoldingNVMember" id="imstiii_HeinekenHoldingNVMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="SecuritiesSoldShortMember" id="imstiii_SecuritiesSoldShortMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="OtherAssetsInExcessOfLiabilitiesMember" id="imstiii_OtherAssetsInExcessOfLiabilitiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="LimitedPartnershipsMember" id="imstiii_LimitedPartnershipsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
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	<element name="BondsAndDebenturesMember" id="imstiii_BondsAndDebenturesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="MetaPlatformsIncClassAMember" id="imstiii_MetaPlatformsIncClassAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="InternationalFlavorsAndFragrancesIncMember" id="imstiii_InternationalFlavorsAndFragrancesIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="CitigroupIncMember" id="imstiii_CitigroupIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="AlphabetIncClassCMember" id="imstiii_AlphabetIncClassCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="AlphabetIncClassAMember" id="imstiii_AlphabetIncClassAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="AnalogDevicesIncMember" id="imstiii_AnalogDevicesIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
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	<element name="C000249813Member" id="imstiii_C000249813Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="C000025975Member" id="imstiii_C000025975Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
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	<element name="USTreasuryNotesAndBondsMember" id="imstiii_USTreasuryNotesAndBondsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="CorporateBankDebtMember" id="imstiii_CorporateBankDebtMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="USTreasuryNote38754302031Member" id="imstiii_USTreasuryNote38754302031Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="USTreasuryNote35002282031Member" id="imstiii_USTreasuryNote35002282031Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="USTreasuryNote37501312031Member" id="imstiii_USTreasuryNote37501312031Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="USTreasuryNote362512312030Member" id="imstiii_USTreasuryNote362512312030Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="USTreasuryNote12504152031Member" id="imstiii_USTreasuryNote12504152031Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="USTreasuryNote350011302030Member" id="imstiii_USTreasuryNote350011302030Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="JPMorganMortgageTrustSeries20221ClassA425007252052Member" id="imstiii_JPMorganMortgageTrustSeries20221ClassA425007252052Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="FannieMaePool1000312037Member" id="imstiii_FannieMaePool1000312037Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="FreddieMacPool1500312041Member" id="imstiii_FreddieMacPool1500312041Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
	<element name="SCERecoveryFundingLLC44533152036Member" id="imstiii_SCERecoveryFundingLLC44533152036Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
</schema>
