-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 ST4FBVnv4mF6e9aD0cYMwHTipM6T35STWvII0jxJb38qvPFNfsf3yoR7lKup1bBD
 Yfl3fBlmrBqodUHc21VzPQ==

<SEC-DOCUMENT>0001225208-08-017450.txt : 20081105
<SEC-HEADER>0001225208-08-017450.hdr.sgml : 20081105
<ACCEPTANCE-DATETIME>20081105142437
ACCESSION NUMBER:		0001225208-08-017450
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20080911
FILED AS OF DATE:		20081105
DATE AS OF CHANGE:		20081105

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:			Walsh Patricia J
		CENTRAL INDEX KEY:			0001448864

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-05531
		FILM NUMBER:		081163338

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		413.226.0536

	MAIL ADDRESS:	
		STREET 1:		BABSON CAPITAL MANAGEMENT LLC
		STREET 2:		1500 MAIN STREET  PO BOX 15189
		CITY:			SPRINGFIELD
		STATE:			MA
		ZIP:			01115
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc3.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2008-09-11</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001448864</rptOwnerCik>
            <rptOwnerName>Walsh Patricia J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>BABSON CAPITAL MANAGEMENT LLC</rptOwnerStreet1>
            <rptOwnerStreet2>1500 MAIN STREET  PO BOX 15189</rptOwnerStreet2>
            <rptOwnerCity>SPRINGFIELD</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>01115</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isOfficer>1</isOfficer>
            <isOther>1</isOther>
            <officerTitle>Vice President</officerTitle>
            <otherText>Officer of Adviser</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks>Power of Attorney form attached.</remarks>

    <ownerSignature>
        <signatureName>Ann Malloy as Attorney-in-fact</signatureName>
        <signatureDate>2008-11-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>walshpoa2008.txt
<TEXT>
SEC Form 3, Form 4 and Form 5 and Application for EDGAR Access
(Form ID) Confirmation of Authority to Sign

Pursuant to Instruction 7 to SEC "Form 3 - Initial Statement
of Beneficial Ownership of Securities", "Form 4--Statement
of Changes in Beneficial Ownership" and "Form 5 - Annual
Statement of Beneficial Ownership of Securities", the
undersigned, being Vice President, Secretary and Chief Legal
Officer of MassMutual Corporate Investors and MassMutual
Participation Investors (each, a "Trust") and a Officer of
Babson Capital Management LLC,  investment adviser to the
Issuer, hereby appoint and designate Melissa Busso, Ruth Howe,
Ann Malloy and Melissa LaGrant, each as my true and lawful
attorneys in fact with full power to (a) apply for access to
the EDGAR filing system in my name and (b) sign for me and
file with the Securities and Exchange Commission, the New
York Stock Exchange and the Trust said SEC Forms 3 4 and/or5
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.

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




Signature:
                 --------------------------------------------------------------
Name:             Patricia J. Walsh
Date:
Title:            Vice President, Secretary and Chief Legal Officer
		  of MassMutual Corporate Investors and MassMutual
		  Participation Investors
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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