2005 ECAC Hockey men's ice hockey tournament

The 2005 ECAC Hockey Men's Ice Hockey Tournament was the 44th tournament in league history. It was played between March 4 and March 19, 2005. Opening round and quarterfinal games were played at home team campus sites, while the final four games were played at the Pepsi Arena (subsequently renamed Times Union Center) in Albany, New York. By winning the tournament, Cornell received the ECAC's automatic bid to the 2005 NCAA Division I Men's Ice Hockey Tournament.

Conference standings
Note: GP = Games played; W = Wins; L = Losses; T = Ties; PTS = Points; GF = Goals For; GA = Goals Against

Bracket
Teams are reseeded after the first round and quarterfinals

Note: * denotes overtime period(s)

All-Tournament Team
* Most Outstanding Player(s)
 * F Kevin Du (Harvard)
 * F Matt Moulson (Cornell)
 * F Daniel Pegoraro (Cornell)
 * D Charlie Cook* (Cornell)
 * D Joey Mormina (Colgate)
 * G David McKee (Cornell)