ECAC Hockey is a National Collegiate Athletic Association (NCAA) Division I ice hockey-only conference, formerly affiliated with the larger Eastern College Athletic Conference, and based in Albany, New York. At the conclusion of each regular season, it holds the ECAC Hockey Men's Ice Hockey Tournament to determine its conference champion, which it has done since the foundation of the conference in 1962.
The tournament has had slight variations over the course of its history, but until 2003 it entailed 8 or 10 teams in three rounds of play. Since 2003, it has contained 12 teams in four rounds of play.
The tournament was first hosted at the Boston Arena in Boston with St. Lawrence winning the inaugural tournament. The Boston Garden in Boston hosted the tournament every year from 1967 through 1992 and was succeeded by the Herb Brooks Arena in Lake Placid, New York from 1993 to 2002 and again in 2014. The Times Union Center and the Boardwalk Hall have also hosted ECAC tournament championships. Cornell has won the most ECAC Hockey championships with twelve as well as appearing in the most championship games at twenty-one. Mike Schafer and Joe Marsh have both coached five championship teams, with the former appearing in the most title games (ten).
The ECAC tournament is the second-oldest active collegiate ice hockey conference tournament behind only the Western Collegiate Hockey Association (WCHA), which began in 1960.