SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT (NO. 33-73824)

UNDER

THE SECURITIES ACT OF 1933

Pre-Effective Amendment No.

Post-Effective Amendment No. 74

and

REGISTRATION STATEMENT

UNDER

THE INVESTMENT COMPANY ACT OF 1940

Investment Company Act File No. 811-8274

Amendment No. 76

MASSMUTUAL SELECT FUNDS

(Exact Name of Registrant as Specified in Declaration of Trust)

1295 State Street, Springfield, Massachusetts 01111

(413) 788-8411

Name and Address of Agent for Service

Andrew M. Goldberg, Esq.

Vice President, Secretary, and Chief Legal Officer

MassMutual Select Funds

1295 State Street

Springfield, Massachusetts 01111

Copy to:

Timothy W. Diggins, Esq.

Ropes & Gray LLP

The Prudential Tower

800 Boylston Street

Boston, MA 02199-3600

It is proposed that this filing become effective on April 22, 2013 pursuant to paragraph (b) of rule 485.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all of the requirements for effectiveness of this Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933, and the Registrant has duly caused this Post-Effective Amendment No. 74 to its Registration Statement to be signed on its behalf by the undersigned, thereto duly authorized, in the City of Springfield and the Commonwealth of Massachusetts as of the 22^nd day of April, 2013.

MASSMUTUAL SELECT FUNDS
By:	/s/    ERIC WIETSMA
	Eric Wietsma President

Pursuant to the requirements of the Securities Act of 1933, as amended, this Post-Effective Amendment No. 74 to the Registration Statement has been signed by the following persons in the capacities as indicated as of the 22^nd day of April, 2013.

Signature	Title
/s/    ERIC WIETSMA         Eric Wietsma	President and Chief Executive Officer
/s/    NICHOLAS H. PALMERINO         Nicholas H. Palmerino	Chief Financial Officer and Treasurer
* Richard H. Ayers	Chairman and Trustee
* Allan W. Blair	Trustee
* Nabil N. El-Hage	Trustee
* Maria D. Furman	Trustee
* R. Alan Hunter, Jr.	Trustee
* Robert E. Joyal	Trustee
* F. William Marshall, Jr.	Trustee
* C. Ann Merrifield	Trustee
* Elaine A. Sarsynski	Trustee
* Susan B. Sweeney	Trustee

*By:	/s/    ANDREW M. GOLDBERG
	Andrew M. Goldberg Attorney-in-Fact

INDEX TO EXHIBITS

Exhibit No.	Title of Exhibit
EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.CAL	XBRL Taxonomy Extension Calculation Linkbase
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Labels Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase