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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 J/3eHE2vYtT1WvI/wVZF4ggdCK0qslV0qCTPx0dLdmOMO8wflG03EMziGIbXzp9/
 +OQpmHSBdruEBFl5+eunYw==

<SEC-DOCUMENT>0000914121-06-001663.txt : 20060511
<SEC-HEADER>0000914121-06-001663.hdr.sgml : 20060511
<ACCEPTANCE-DATETIME>20060511181258
ACCESSION NUMBER:		0000914121-06-001663
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030331
FILED AS OF DATE:		20060511
DATE AS OF CHANGE:		20060511

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WITTER DEAN DIVERSIFIED FUTURES FUND III L P
		CENTRAL INDEX KEY:			0000863535
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				133577501
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1221 AVE. OF THE AMERICAS, 23RD FL.
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10020

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Ketterer Douglas J
		CENTRAL INDEX KEY:			0001362417

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-19116
		FILM NUMBER:		06831631

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		212-905-2700

	MAIL ADDRESS:	
		STREET 1:		C/O DEMETER MANAGEMENT CORPORATION
		STREET 2:		330 MADISON AVENUE 8TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>pketterer-7_728654ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2003-03-31</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000863535</issuerCik>
        <issuerName>WITTER DEAN DIVERSIFIED FUTURES FUND III L P</issuerName>
        <issuerTradingSymbol>NONE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001362417</rptOwnerCik>
            <rptOwnerName>Ketterer Douglas J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O DEMETER MANAGEMENT CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>330 MADISON AVENUE 8TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10017</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Director of General Partner</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>No units of limited partnership interest beneficially owned</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <remarks>Name: Douglas J. Ketterer
Title: Director
Demeter Management Corporation,
Issuer's General Partner</remarks>

    <ownerSignature>
        <signatureName>/s/ Douglas J. Ketterer</signatureName>
        <signatureDate>2006-05-11</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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