EX-99.906CERT

CERTIFICATION

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

          Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), each of the undersigned officers of the TIAA-CREF Institutional Mutual Funds does hereby certify, to such officer’s knowledge, that:

          The semi-annual report on Form N-CSR of the TIAA-CREF Institutional Mutual Funds (the “Funds”) for the six months ended March 31, 2005 (the “Form N-CSR”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and information contained in the Form N-CSR fairly presents, in all material respects, the financial condition and results of operations of the Funds.

Dated:	May 16, 2005
		By:	/s/ Herbert M. Allison, Jr.
			Herbert M. Allison, Jr.
			President and Chief Executive Officer
			(principal executive officer)
			TIAA-CREF Institutional Mutual Funds
Dated:	May 16, 2005
		By:	/s/ Russell Noles
			Russell Noles
			Vice President and Acting Chief Financial Officer,
			Teachers Insurance and Annuity Association of America
			(acting principal financial officer)