The 2004 NCAA Division I-AA football season, part of college football in the United States organized by the National Collegiate Athletic Association at the Division I-AA level, began on August 28, 2004, and concluded with the 2004 NCAA Division I-AA Football Championship Game on December 17, 2004, at Finley Stadium in Chattanooga, Tennessee. James Madison won their first I-AA championship, defeating Montana by a final score of 31−21.

Conference changes and new programs

I-AA team wins over I-A teams

Conference standings

Postseason

NCAA Division I-AA playoff bracket

• Denotes host institution