1991 Stanford Cardinal football team

The 1991 Stanford Cardinal football team represented Stanford University as a member of the Pacific-10 Conference (Pac-10) during the 1991 NCAA Division I-A football season. Led by Dennis Green in his third and final season as head coach, the Cardinal compiled an overall record of 8–4 with a mark of 6–2 in conference play, placing in a three-way tie for second in the Pac-10. Stanford was invited to the Aloha Bowl, where the Cardinal lost to Georgia Tech. The team played home games at Stanford Stadium in Stanford, California.

Tommy Vardell rushed for 1,843 yards with 37 touchdowns in his college career. He never fumbled once for Stanford, and ranks second in Stanford football history for most touchdowns and third for most rushing yards. Vardell set the record for most rushing yards in a season by a Cardinal running back, with his 1084 yards in 1991.

Stanford's win over USC in October, its first over the Trojans since 1975, and only its fourth since 1957, signaled a remarkable change in that rivalry’s competitiveness, as the two teams have shared wins roughly evenly in the succeeding years.