1991 NCAA Division III football season

The 1991 NCAA Division III football season, part of the college football season organized by the NCAA at the Division III level in the United States, began in August 1991, and concluded with the NCAA Division III Football Championship, also known as the Stagg Bowl, in December 1991 at Hawkins Stadium in Bradenton, Florida. The Ithaca Bombers won their third Division III championship by defeating the Dayton Flyers, 34−20.

Name change

 * New England Football Conference member Southeastern Massachusetts University changed its name to the University of Massachusetts Dartmouth before the start of the 1991 season. Its football program hence changed from the Southeastern Massachusetts Corsairs to the UMass Dartmouth Corsairs.

Postseason
The 1991 NCAA Division III Football Championship playoffs were the 19th annual single-elimination tournament to determine the national champion of men's NCAA Division III college football. The championship Stagg Bowl game was held at Hawkins Stadium in Bradenton, Florida for the second time. Like the previous six tournaments, this year's bracket featured sixteen teams.