| 1991 CFL season | |
|---|---|
| Duration | July 11 – November 3, 1991 |
| East champions | Toronto Argonauts |
| West champions | Calgary Stampeders |
| 79th Grey Cup | |
| Date | November 24, 1991 |
| Venue | Winnipeg Stadium, Winnipeg |
| Champions | Toronto Argonauts |
The 1991 CFL season is considered to be the 38th season in modern-day Canadian football, although it is officially the 34th Canadian Football League season.