The 1991 Indiana Hoosiers football team represented Indiana University in the 1991 NCAA Division I-A football season. They participated as members of the Big Ten Conference. The Hoosiers played their home games at Memorial Stadium in Bloomington, Indiana. The team was coached by Bill Mallory, in his eighth year as head coach of the Hoosiers. The Hoosiers participated in the Copper Bowl, a post-season matchup against Baylor. The Hoosiers won, 24–0. Vaughn Dunbar set the school record for rushing yards in a single season with 1,805 yards. This record stood until 2014 when it was broken by Tevin Coleman with 2,036 yards.