| Year: | 1991 |
| Team: | Boise State Broncos |
| Sport: | football |
| Conference: | Big Sky Conference |
| Short Conf: | Big Sky |
| Record: | 7–4 |
| Conf Record: | 4–4 |
| Head Coach: | Skip Hall |
| Hc Year: | 5th |
| Stadium: | Bronco Stadium |
The 1991 Boise State Broncos football team represented Boise State University in the 1991 NCAA Division I-AA football season. The Broncos competed in the Big Sky Conference and played their home games on campus at Bronco Stadium in Boise, Idaho. The Broncos were led by fifth-year head coach Skip Hall, Boise State finished the season 7–4 overall and 4–4 in conference. The Broncos won all of their home games, but lost the rest.
The following Broncos were selected in the 1992 NFL draft following the season.[2]
| 5 | 137 | Frank Robinson | Defensive back | Denver Broncos | |
| 9 | 234 | Larry Stayner | Tight end | Seattle Seahawks |