The 1983 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 in August 1983, and concluded with the 1983 NCAA Division I-AA Football Championship Game on December 17, 1983, at Johnson Hagood Stadium in Charleston, South Carolina. The Southern Illinois Salukis won their first I-AA championship, defeating the Western Carolina Catamounts by a score of 43−7.

Conference changes and new programs

Conference standings

Conference champions

Postseason

The top four teams were seeded, and received first-round byes.

NCAA Division I-AA playoff bracket

• indicates overtime period