2005 Atlantic Hockey men's ice hockey tournament

Play-in and quarterfinal games were played at home team campus sites, while the semifinals and championship games were played at the Quinnipiac home venue: Northford Ice Pavilion in Northford, Connecticut.

By winning the tournament, Mercyhurst received the Atlantic Hockey Association's automatic bid to the 2005 NCAA Division I Men's Ice Hockey Tournament.

The tournament featured three rounds of play and a play-in game.

The play-in game consists of the eighth and ninth seeds competing to decide the final qualifier.

Note: GP = Games played; W = Wins; L = Losses; T = Ties; PTS = Points; GF = Goals For; GA = Goals Against Teams are reseeded after the Quarterfinals Note: * denotes overtime period(s)