The 2004 Big East men's basketball tournament, a part of the 2003–04 NCAA Division I men's basketball season, took place from March 10–13, 2004 at Madison Square Garden in New York City. It was a single-elimination tournament with four rounds and the four highest seeds (two from each Big East division) received byes in the first round. The twelve Big East teams with the best conference records were invited to participate. The winner, Connecticut, received the Big East Conference's automatic bid to the 2004 NCAA tournament, the sixth for the Huskies, tying Georgetown for the most Big East tournament championships.

Bracket

Note: By finishing below twelfth place during the regular season, and St. John's did not qualify for the tournament.

Games

1st round: Wednesday, March 10

Quarterfinals: Thursday, March 11

Semifinals: Friday, March 12

Championship game

Awards

Dave Gavitt Trophy (Most Outstanding Player): Ben Gordon, Connecticut All-Tournament Team