[Logo – American Funds®]

American Mutual Fund, Inc.

333 South Hope Street

Los Angeles, California  90071-1406

Phone (213) 486 9200

Fax (213) 486 9455

Vincent P. Corti

Secretary

January 5, 2010

U.S. Securities and Exchange Commission

100 F Street, NE

Washington, DC 20549

Re:	American Mutual Fund, Inc.
	File Nos.  811-00572 and 002-10607

Dear Sir or Madam:

Pursuant to Rule 497(j), I hereby certify that no changes have been made to the forms of prospectuses and Statement of Additional Information since the electronic filing on December 31, 2009 of Registrant's Post-Effective Amendment No. 123 under the Securities Act of 1933 and Amendment No. 43 under the Investment Company Act of 1940.

Sincerely,

/s/ Vincent P. Corti

Vincent P. Corti

Secretary