The 1991 Indiana Hoosiers football team represented Indiana University Bloomington as a member of the Big Ten Conference during the 1991 NCAA Division I-A football season.
Led by eighth-year head coach Bill Mallory, the Hoosiers compiled an overall record of 7–4–1 with a mark of 5–3 in conference play, tying for third place the Big Ten.
Indiana was invited to the Copper Bowl, where they beat Baylor, 24–0.
The team played home games at Memorial Stadium in Bloomington, Indiana.
This record stood until the 2014 season when it was broken by Tevin Coleman with 2,036 yards.