-----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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 pyNvQEnTrujCjOn7Nlrvyg==

<SEC-DOCUMENT>0001160445-10-000004.txt : 20100816
<SEC-HEADER>0001160445-10-000004.hdr.sgml : 20100816
<ACCEPTANCE-DATETIME>20100816143724
ACCESSION NUMBER:		0001160445-10-000004
CONFORMED SUBMISSION TYPE:	D
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
ITEM INFORMATION:		Investment Company Act Section 3(c)
ITEM INFORMATION:		Section 3(c)(5)
FILED AS OF DATE:		20100816
DATE AS OF CHANGE:		20100816
EFFECTIVENESS DATE:		20100816

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			D&A SEMI ANNUAL MORTGAGE FUND III LP
		CENTRAL INDEX KEY:			0001160445
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			CA

	FILING VALUES:
		FORM TYPE:		D
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-146479
		FILM NUMBER:		101018964

	BUSINESS ADDRESS:	
		STREET 1:		10251 VISTA SORRENTO PARKWAY
		STREET 2:		SUITE 200
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121
		BUSINESS PHONE:		858-954-0500

	MAIL ADDRESS:	
		STREET 1:		10251 VISTA SORRENTO PARKWAY
		STREET 2:		SUITE 200
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121
</SEC-HEADER>
<DOCUMENT>
<TYPE>D
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0704</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001160445</cik>
        <entityName>D&amp;A SEMI ANNUAL MORTGAGE FUND III LP</entityName>
        <issuerAddress>
            <street1>10251 VISTA SORRENTO PARKWAY</street1>
            <street2>SUITE 200</street2>
            <city>SAN DIEGO</city>
            <stateOrCountry>CA</stateOrCountry>
            <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
            <zipCode>92121</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>858-954-0500</issuerPhoneNumber>
        <jurisdictionOfInc>CALIFORNIA</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Limited Partnership</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Jeffrey</firstName>
                <middleName>A</middleName>
                <lastName>Dunham</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>10251 Vista Sorrento Parkway</street1>
                <street2>Suite 200</street2>
                <city>San Diego</city>
                <stateOrCountry>CA</stateOrCountry>
                <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                <zipCode>92121</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>CEO &amp; Director of General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Denise</firstName>
                <middleName>S</middleName>
                <lastName>Iverson</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>10251 Vista Sorrento Parkway</street1>
                <street2>Suite 200</street2>
                <city>San Diego</city>
                <stateOrCountry>CA</stateOrCountry>
                <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                <zipCode>92121</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Chief Financial Officer of the General Partner</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>N/A</firstName>
                <lastName>Dunham &amp; Associates Investment Counsel</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>10251 Vista Sorrento Parkway</street1>
                <street2>Suite 200</street2>
                <city>San Diego</city>
                <stateOrCountry>CA</stateOrCountry>
                <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                <zipCode>92121</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>N/A</firstName>
                <lastName>Asset Managers, Inc.</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>10251 Vista Sorrento Parkway</street1>
                <street2>Suite 200</street2>
                <city>San Diego</city>
                <stateOrCountry>CA</stateOrCountry>
                <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                <zipCode>92121</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>General Partner</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Pooled Investment Fund</industryGroupType>
            <investmentFundInfo>
                <investmentFundType>Hedge Fund</investmentFundType>
                <is40Act>false</is40Act>
            </investmentFundInfo>
        </industryGroup>
        <issuerSize>
            <aggregateNetAssetValueRange>Over $100,000,000</aggregateNetAssetValueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
            <item>3C</item>
            <item>3C.5</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>1995-03-01</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>true</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isPooledInvestmentFundType>true</isPooledInvestmentFundType>
            <isOtherType>true</isOtherType>
            <descriptionOfOtherType>Limited Partnership Interests</descriptionOfOtherType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>250000</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>First Allied Securities Inc</recipientName>
                <recipientCRDNumber>32444</recipientCRDNumber>
                <associatedBDName>First Allied Securities Inc</associatedBDName>
                <associatedBDCRDNumber>32444</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>655 West Broadway</street1>
                    <street2>12th Floor</street2>
                    <city>San Diego</city>
                    <stateOrCountry>CA</stateOrCountry>
                    <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                    <zipCode>92101</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>H. Beck, Inc</recipientName>
                <recipientCRDNumber>1763</recipientCRDNumber>
                <associatedBDName>H. Beck, Inc</associatedBDName>
                <associatedBDCRDNumber>1763</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>11140 Rockville Pike - 400</street1>
                    <city>Rockville</city>
                    <stateOrCountry>MD</stateOrCountry>
                    <stateOrCountryDescription>MARYLAND</stateOrCountryDescription>
                    <zipCode>20852</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
        </salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>Indefinite</totalOfferingAmount>
            <totalAmountSold>663598683</totalAmountSold>
            <totalRemaining>Indefinite</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>300</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>426</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>D&amp;A SEMI ANNUAL MORTGAGE FUND III LP</issuerName>
                <signatureName>Denise Iverson</signatureName>
                <nameOfSigner>Denise Iverson</nameOfSigner>
                <signatureTitle>Chief Financial Officer</signatureTitle>
                <signatureDate>2010-08-16</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----