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,  do
hereby certify, to such officer's knowledge, that:

         The annual report on Form N-CSR of the TIAA-CREF  Institutional  Mutual
         Funds (the  "Funds") for the fiscal year ended  September 30, 2003 (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: November 14, 2003                   /s/ BERTRAM L. SCOTT
                                           -------------------------------------
                                           Bertram L. Scott
                                           Executive Vice President
                                           (Principal Executive Officer)
                                           TIAA-CREF Institutional Mutual Funds



Dated:  November 14, 2003                  /s/ ELIZABETH A. MONRAD
                                           -------------------------------------
                                           Elizabeth A. Monrad
                                           Executive Vice President
                                           (Principal Executive Officer)
                                           TIAA-CREF Institutional Mutual Funds




            2003 Annual Report TIAA-CREF Institutional Mutual Funds