485BXT
                    Post-Effective Amendment

               SECURITIES AND EXCHANGE COMMISSION
                    Washington, D.C.   20549

                           FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933               [X]

     Pre-Effective Amendment No.                                      [ ]

     Post-Effective Amendment No. 95                                  [X]

                             and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940       [X]

     Amendment No. 95                                                 [X]

                        (Check appropriate box or boxes.)


                       AMERICAN CENTURY MUTUAL FUNDS, INC.
       _________________________________________________________________
               (Exact Name of Registrant as Specified in Charter)


                  4500 Main Street, Kansas City, MO 64141-6200
       _________________________________________________________________
               (Address of Principal Executive Offices) (Zip Code)


       Registrant's Telephone Number, including Area Code: (816) 531-5575


       David C. Tucker, Esq., 4500 Main Street, Kansas City, MO 64141-6200
       _________________________________________________________________
                     (Name and Address of Agent for Service)

         Approximate Date of Proposed Public Offering: March 1, 2002

 It is proposed that this filing will become effective (check appropriate box)

     [ ] immediately upon filing pursuant to paragraph (b)
     [X] on March 1, 2002 pursuant to paragraph (b)
     [ ] 60 days after filing pursuant to paragraph (a)(1)
     [ ] on (date) pursuant to paragraph (a)(1)
     [ ] 75 days after filing pursuant to paragraph (a)(2)
     [ ] on (date) pursuant to paragraph (a)(2) of rule 485.

If appropriate, check the following box:

     [X] This post-effective amendment designates a new effective date for a
         previously filed post-effective amendment.

--------------------------------------------------------------------------------
This filing is being made to extend the date of effectiveness of the
Registrant's Post-Effective Amendment No. 95 to March 1, 2002. The
Post-Effective Amendment originally requested effectiveness as of February 13,
2002.

The following documents are hereby incorporated by reference:

*   Prospectus for the fund under the issuer American Century Mutual Funds,
    Inc., dated February 13, 2002 filed pursuant to Rule 485(a) on December 13,
    2001 (Accession No. 0000100334-01-500021).

*   Statement of Additional Information for American Century Mutual Funds, Inc.
    dated February 13, 2002 filed pursuant to Rule 485(a) on December 13, 2001
    (Accession No. 0000100334-01-500021).

*   Part C to the Registration Statement of American Century Mutual Funds, Inc.
    dated February 13, 2002 filed pursuant to Rule 485(a) on December 13, 2001
    (Accession No. 0000100334-01-500021).

Registrant is extending effectiveness of its Registration Statement in order to
incorporate comments provided to its manager by the staff of the Commission.

                                   SIGNATURES

    Pursuant to the requirements of the Securities Act of 1933 and the
Investment Company Act of 1940, the Registrant certifies that it has duly caused
this Post-Effective Amendment No. 95 to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Kansas City, State of
Missouri on the 12th day of February, 2002.

                                       American Century Mutual Funds, Inc.
                                       (Registrant)

                                       By: /*/William M. Lyons
                                       President and Principal Executive Officer

     Pursuant  to  the   requirements  of  the  Securities  Act  of  1933,  this
Post-Effective  Amendment No. 95 has been signed below by the following  persons
in the capacities and on the dates indicated.

Signature                   Title                              Date
---------                   -----                              ----

*William M. Lyons           President and                      February 12, 2002
William M. Lyons            Principal Executive Officer

*Maryanne Roepke            Senior Vice President,             February 12, 2002
Maryanne Roepke             Treasurer and Chief
                            Accounting Officer

*James E. Stowers, Jr.      Chairman of the Board and          February 12, 2002
James E. Stowers, Jr.       Director

*James E. Stowers III       Director                           February 12, 2002
James E. Stowers III

*Thomas A. Brown            Director                           February 12, 2002
Thomas A. Brown

*Robert W. Doering, M.D.    Director                           February 12, 2002
Robert W. Doering, M.D.

*Andrea C. Hall, Ph.D.      Director                           February 12, 2002
Andrea C. Hall, Ph.D.

*D. D. (Del) Hock           Director                           February 12, 2002
D. D. (Del) Hock

*Donald H. Pratt            Director                           February 12, 2002
Donald H. Pratt

*Gale E. Sayers             Director                           February 12, 2002
Gale E. Sayers

*M. Jeannine Strandjord     Director                           February 12, 2002
M. Jeannine Strandjord

*Timothy S. Webster
Timothy S. Webster          Director                           February 12, 2002

*By /s/Charles A. Etherington
    Charles A. Etherington
    Attorney-in-Fact