-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 G0ScCtVD6mfx8OOOud78TQ==

<SEC-DOCUMENT>0001308526-09-000004.txt : 20090415
<SEC-HEADER>0001308526-09-000004.hdr.sgml : 20090415
<ACCEPTANCE-DATETIME>20090415171456
ACCESSION NUMBER:		0001308526-09-000004
CONFORMED SUBMISSION TYPE:	D/A
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
ITEM INFORMATION:		Investment Company Act Section 3(c)
ITEM INFORMATION:		Section 3(c)(6)
FILED AS OF DATE:		20090415
DATE AS OF CHANGE:		20090415
EFFECTIVENESS DATE:		20090415

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMB INSTITUTIONAL ALLIANCE REIT III INC
		CENTRAL INDEX KEY:			0001308526
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		D/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-70975
		FILM NUMBER:		09751896

	BUSINESS ADDRESS:	
		STREET 1:		PIER 1 BAY 1
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94111
		BUSINESS PHONE:		4153949000

	MAIL ADDRESS:	
		STREET 1:		PIER 1 BAY 1
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94111
</SEC-HEADER>
<DOCUMENT>
<TYPE>D/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0301</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001308526</cik>
        <entityName>AMB INSTITUTIONAL ALLIANCE REIT III INC</entityName>
        <issuerAddress>
            <street1>PIER 1 BAY 1</street1>
            <street2></street2>
            <city>SAN FRANCISCO</city>
            <stateOrCountry>CA</stateOrCountry>
            <zipCode>94111</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>4153949000</issuerPhoneNumber>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <jurisdictionOfInc>MD</jurisdictionOfInc>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2004</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>John</firstName>
                <middleName>T.</middleName>
                <lastName>Roberts</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Pier 1, Bay 1</street1>
                <street2></street2>
                <city>San Francisco</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94111</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Thomas</firstName>
                <middleName>S.</middleName>
                <lastName>Olinger</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Pier 1, Bay 1</street1>
                <street2></street2>
                <city>San Francisco</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94111</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Guy</firstName>
                <middleName>F.</middleName>
                <lastName>Jaquier</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Pier 1, Bay 1</street1>
                <street2></street2>
                <city>San Francisco</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94111</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Tamra</firstName>
                <middleName>D.</middleName>
                <lastName>Browne</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Pier 1, Bay 1</street1>
                <street2></street2>
                <city>San Francisco</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94111</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Alison</firstName>
                <middleName>M.</middleName>
                <lastName>Hill</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Pier 1, Bay 1</street1>
                <street2></street2>
                <city>San Francisco</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94111</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Robert</firstName>
                <middleName>C.</middleName>
                <lastName>Bransfield</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Pier 1, Bay 1</street1>
                <street2></street2>
                <city>San Francisco</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94111</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Nina</firstName>
                <middleName>A.</middleName>
                <lastName>Tran</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Pier 1, Bay 1</street1>
                <street2></street2>
                <city>San Francisco</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94111</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Grazer</firstName>
                <middleName>T.</middleName>
                <lastName>Rohn</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Pier 1, Bay 1</street1>
                <street2></street2>
                <city>San Francisco</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94111</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Other Real Estate</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
            <item>3C</item>
            <item>3C.6</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>9999999997-08-020232</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2004-10-26</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>true</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
            <isPooledInvestmentFundType>true</isPooledInvestmentFundType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>5000000</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>Indefinite</totalOfferingAmount>
            <totalAmountSold>804850000</totalAmountSold>
            <totalRemaining>Indefinite</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>38</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>AMB INSTITUTIONAL ALLIANCE REIT III INC</issuerName>
                <signatureName>/s/ Robert C. Bransfield</signatureName>
                <nameOfSigner>Robert C. Bransfield</nameOfSigner>
                <signatureTitle>Senior Vice President and Portfolio Manager</signatureTitle>
                <signatureDate>2009-04-15</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----