| Teams | 12 |
|---|---|
| Finals site | |
| Champions | Northern Michigan Wildcats (1st title) |
| Runner-up | Boston University Terriers (6th title game) |
| Semifinalists |
|
| Winning coach | Rick Comley[1] (1st title) |
| MOP | Scott Beattie (Northern Michigan) |
| Attendance | 35,938 |
The 1991 NCAA Division I Men's Ice Hockey Tournament was the culmination of the 1990–91 NCAA Division I men's ice hockey season, the 44th such tournament in NCAA history. It was held between March 15 and March 30, 1991, and concluded with Northern Michigan defeating Boston University 8-7 in overtime. All First Round and Quarterfinals matchups were held at home team venues with the 'Frozen Four' games being played at the Saint Paul Civic Center in Saint Paul, Minnesota.