| Year: | 1991 |
| Conference: | MAAC |
| Division: | I |
| Gender: | Men's |
| Teams: | 9 |
| Arena: | Knickerbocker Arena |
| City: | Albany, NY |
| Champions: | Saint Peter's |
| Titlecount: | 1st |
| Coach: | Ted Fiore |
| Coachcount: | 1st |
| Mvp: | Marvin Andrews |
| Mvpteam: | Saint Peter's |
The 1991 MAAC men's basketball tournament was held March 1–4 at Knickerbocker Arena in Albany, New York.[1]
Number three seed Saint Peter's defeated in the championship game, 64–58, to win their first MAAC men's basketball tournament.
The Peacocks received an automatic bid to the 1991 NCAA tournament as the No. 12 seed in the Midwest region.
All nine of the conference's members participated in the tournament field. Teams were seeded based on regular season conference records. All games were played at the new Knickerbocker Arena in Albany, New York.