Rule 30a-2(b) CERTIFICATIONS


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

         (1)   The  semi-annual  report on Form N-CSR of the  Registrant for the
               period  ended April 30, 2004 (the "Form  N-CSR")  fully  complies
               with the requirements of Section 13(a) or 15(d) of the Securities
               Exchange Act of 1934; and

         (2)   the information  contained in the Form N-CSR fairly presents,  in
               all material  respects,  the  financial  condition and results of
               operations of The Alger Institutional Funds.


Dated: June 30, 2004



/s/Dan C. Chung


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Dan C. Chung
President
The Alger Institutional Funds


Dated: June 30, 2004



/s/ Frederick A. Blum


- ----------------------------------------
Frederick A. Blum
Treasurer
The Alger Institutional Funds



This certification is being furnished solely pursuant to 18 U.S.C. ss. 1350 and
is not being filed as part of the Report or as a separate disclosure document.