-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0000275694-05-000091.txt : 20051230
<SEC-HEADER>0000275694-05-000091.hdr.sgml : 20051230
<ACCEPTANCE-DATETIME>20051230132609
ACCESSION NUMBER:		0000275694-05-000091
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20051228
FILED AS OF DATE:		20051230
DATE AS OF CHANGE:		20051230

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			NORGAARD CORINE T
		CENTRAL INDEX KEY:			0001251806

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-05531
		FILM NUMBER:		051293852

	MAIL ADDRESS:	
		STREET 1:		556 WORMWOOD HILL ROAD
		CITY:			MANSFIELD CENTER
		STATE:			CT
		ZIP:			06250

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MASSMUTUAL PARTICIPATION INVESTORS
		CENTRAL INDEX KEY:			0000831655
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		IRS NUMBER:				043025730
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1500 MAIN STREET
		STREET 2:		SUITE 600
		CITY:			SPRINGFIELD
		STATE:			MA
		ZIP:			01115
		BUSINESS PHONE:		4132261000

	MAIL ADDRESS:	
		STREET 1:		1500 MAIN STREET
		STREET 2:		SUITE 600
		CITY:			SPRINGFIELD
		STATE:			MA
		ZIP:			01115

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MASSMUTUAL CORPORATE INVESTORS II
		DATE OF NAME CHANGE:	19880417
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>nor14.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-12-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000831655</issuerCik>
        <issuerName>MASSMUTUAL PARTICIPATION INVESTORS</issuerName>
        <issuerTradingSymbol>MPV</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001251806</rptOwnerCik>
            <rptOwnerName>NORGAARD CORINE T</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>556 WORMWOOD HILL ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MANSFIELD CENTER</rptOwnerCity>
            <rptOwnerState>CT</rptOwnerState>
            <rptOwnerZipCode>06250</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2005-12-28</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>900</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>14.16</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1911.00</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>By: Mark Godin as Attorney-in-fact for</signatureName>
        <signatureDate>2005-12-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>norgaard.txt
<TEXT>
        SEC Form 4 and Form 5--Confirmation of Authority to Sign and File

Pursuant to Instruction 7 to SEC "Form 4--Statement of Changes in Beneficial
Ownership and Form 5 - Annual Statement of Beneficial Ownership of Securities"
the undersigned, being a Trustee of MassMutual Corporate Investors and
MassMutual Participation Investors (each, a "Trust"), hereby appoint and
designate (i) Rosemary Baker, (ii) Kelly Schetzel and (iii) Mark Godin, and
each of them singly, my true and lawful power of attorney with full power to
sign for me and file with the Securities and Exchange Commission, the New York
Stock Exchange and the Trust said SEC Form 4 or Form 5 with respect to shares
of the Trust purchased or sold by the undersigned or any other change of
beneficial ownership relating to equity or derivative securities of the Trust
required to be reported by the undersigned on Form 4 or Form 5.

This authorization shall remain in effect until a written revocation is
executed by the undersigned and filed with the Securities and Exchange
Commission.



Signature and Date:                 S/Corine T. Norgaard    June 30, 2005
                           ------------------------------------------------

Name:    Corine T. Norgaard
Title:   Trustee of MassMutual Corporate Investors and MassMutual
         Participation Investors















</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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