1991 Montana State Bobcats football team

The 1991 Montana State Bobcats football team was an American football team that represented Montana State University in the Big Sky Conference during the 1991 NCAA Division I-AA football season. In their fifth and final season under head coach Earle Solomonson, the Bobcats compiled a 2–9 record (1–7 against Big Sky opponents) and finished in a tie for last place in the Big Sky.