CERTIFICATION

             RIVERSOURCE LARGE CAP SERIES, INC. (the Registrant)

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

Each of the undersigned below certifies that

     1.   This report on Form N-CSR of the Registrant (the Report) 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 Report fairly presents, in all
          material respects, the financial condition and results of
          operations of the Registrant.


Date: September 22, 2006          /s/ William F. Truscott
                                  -----------------------
                                      William F. Truscott
                                      President and Principal Executive Officer


Date: September 22, 2006          /s/ Jeffrey P. Fox
                                  ------------------
                                      Jeffrey P. Fox
                                      Treasurer and Principal Financial Officer


A SIGNED ORIGINAL OF THIS WRITTEN STATEMENT REQUIRED BY SECTION 906, OR
OTHER DOCUMENT AUTHENTICATING, ACKNOWLEDGING, OR OTHERWISE ADOPTING THE
SIGNATURE THAT APPEARS IN TYPED FORM WITHIN ELECTRONIC VERSION OF THIS
WRITTEN STATEMENT REQUIRED BY SECTION 906, HAS BEEN PROVIDED TO THE
REGISTRANT AND WILL BE RETAINED BY THE REGISTRANT AND FURNISHED TO THE
SECURITIES AND EXCHANGE COMMISSION OR ITS STAFF UPON REQUEST.

This certification is being furnished to the Commission solely pursuant to
18 U.S.C. Section 1350 and is not being filed as part of the Form N-CSR
filed with the Commission.