| Year: | 1991 |
| Team: | North Dakota State Bison |
| Sport: | football |
| Conference: | North Central Conference |
| Short Conf: | NCC |
| Record: | 7–3 |
| Conf Record: | 7–1 |
| Head Coach: | Rocky Hager |
| Hc Year: | 5th |
| Stadium: | Dacotah Field |
| Champion: | NCC champion |
| Bowl: | NCAA Division II First Round |
| Bowl Result: | L 7–27 vs. |
The 1991 North Dakota State Bison football team was an American football team that represented North Dakota State University during the 1991 NCAA Division II football season as a member of the North Central Conference. In their fifth year under head coach Rocky Hager, the team compiled a 7–3 record and finished as NCC champion.