-----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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 vCss73mZb0TRv/c85h2Chg==

<SEC-DOCUMENT>0000275694-06-000051.txt : 20060720
<SEC-HEADER>0000275694-06-000051.hdr.sgml : 20060720
<ACCEPTANCE-DATETIME>20060720075227
ACCESSION NUMBER:		0000275694-06-000051
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20060718
FILED AS OF DATE:		20060720
DATE AS OF CHANGE:		20060720

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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Talaia Ronald
		CENTRAL INDEX KEY:			0001369296

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-05531
		FILM NUMBER:		06970475

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		413-226-1000

	MAIL ADDRESS:	
		STREET 1:		BABSON CAPITAL MANAGEMENT LLC
		STREET 2:		1500 MAIN ST
		CITY:			SPRINGFIELD
		STATE:			MA
		ZIP:			01115
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>tal22.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2006-07-18</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001369296</rptOwnerCik>
            <rptOwnerName>Talaia Ronald</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>BABSON CAPITAL MANAGEMENT LLC</rptOwnerStreet1>
            <rptOwnerStreet2>1500 MAIN ST</rptOwnerStreet2>
            <rptOwnerCity>SPRINGFIELD</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>01115</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Treasurer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <footnotes></footnotes>

    <ownerSignature>
        <signatureName>/s/ Talaia, Ronald</signatureName>
        <signatureDate>2006-07-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>talaia.txt
<DESCRIPTION>POA
<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) Diane Clines, (ii) Mark Godin, (iii) Sara Stinson and (iv)
Robert Guerin, 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:       Ronald Talaia        July 18, 2006
                  -------------------------------------------------------------

Name:    Ronald Talaia
Title:   Trustee of MassMutual Corporate Investors and
         MassMutual Participation Investors















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