1990–91 NCAA Division I men's ice hockey season

The 1990–91 NCAA Division I men's ice hockey season began in October 1990 and concluded with the 1991 NCAA Division I Men's Ice Hockey Tournament's championship game on March 30, 1991, at the Saint Paul Civic Center in Saint Paul, Minnesota. This was the 44th season in which an NCAA ice hockey championship was held and is the 97th year overall where an NCAA school fielded a team.

Pre-season polls
The top teams in the nation as ranked before the start of the season.

The WMPL poll was voted on by coaches. The WMEB was voted on by media. The Times Union poll was voted on by coaches, media, and NHL scouts.

Final regular season polls
The final polls were released before the conference tournaments.

Scoring leaders
The following players led the league in points at the conclusion of the season.

GP = Games played; G = Goals; A = Assists; Pts = Points; PIM = Penalty minutes

Leading goaltenders
The following goaltenders led the league in goals against average at the end of the regular season while playing at least 33% of their team's total minutes.

GP = Games played; Min = Minutes played; W = Wins; L = Losses; OT = Overtime/shootout losses; GA = Goals against; SO = Shutouts; SV% = Save percentage; GAA = Goals against average

1991 NHL Entry Draft
† incoming freshman