<SEC-DOCUMENT>0001225208-11-023858.txt : 20111028
<SEC-HEADER>0001225208-11-023858.hdr.sgml : 20111028
<ACCEPTANCE-DATETIME>20111028162602
ACCESSION NUMBER:		0001225208-11-023858
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20111021
FILED AS OF DATE:		20111028
DATE AS OF CHANGE:		20111028

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Feeley Sean
		CENTRAL INDEX KEY:			0001533628

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-05531
		FILM NUMBER:		111165526

	MAIL ADDRESS:	
		STREET 1:		1500 MAIN STREET
		STREET 2:		SUITE 1100 PO BOX 15189
		CITY:			SPRINGFIELD
		STATE:			MA
		ZIP:			01115

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>3
<SEQUENCE>1
<FILENAME>doc3.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0204</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2011-10-21</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001533628</rptOwnerCik>
            <rptOwnerName>Feeley Sean</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1500 MAIN STREET</rptOwnerStreet1>
            <rptOwnerStreet2>P O BOX 15189</rptOwnerStreet2>
            <rptOwnerCity>SPRINGFIELD</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>01115</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isOfficer>1</isOfficer>
            <officerTitle>Vice President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <ownerSignature>
        <signatureName>Ann Malloy as Attorney-in-fact</signatureName>
        <signatureDate>2011-10-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>seanfeeley2011.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 a Vice President of MassMutual Corporate Investors and
MassMutual Participation Investors (each, a "Trust"), hereby appoint and
designate Ruth Howe, Ann Malloy, Diane Clines 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/or 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.

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




Date:             10-26-2011
Name:             Sean Feeley
Title:            Vice President of MassMutual Corporate Investors and
MassMutual
                  Participation Investors




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