| Year: | 1991 |
| Conference: | Ohio Valley Conference |
| Gender: | Men's |
| Teams: | 7 |
| Arena: | Racer Arena |
| City: | Murray, Kentucky |
| Champions: | Murray State |
| Titlecount: | 5th |
| Coach: | Steve Newton |
| Coachcount: | 3rd |
| Mvp: | Popeye Jones (2nd MVP) |
| Mvpteam: | Murray State |
The 1991 Ohio Valley Conference men's basketball tournament was the final event of the 1990–91 season in the Ohio Valley Conference. The tournament was held March 2-4, 1991, at Racer Arena in Murray, Kentucky.
Murray State defeated in the championship game, 79–67, to win their fifth OVC men's basketball tournament.
The Racers received an automatic bid to the 1991 NCAA tournament as the #13 seed in the Southeast region.
All seven of the conference's members participated in the tournament field. They were seeded based on regular season conference records, with the top seed (Murray State) receiving a bye to the semifinal round. The teams were re-seeded after the opening round.