1991 Big East men's basketball tournament

The 1991 Big East men's basketball tournament took place at Madison Square Garden in New York City, from March 7 to March 10, 1991. Its winner received the Big East Conference's automatic bid to the 1991 NCAA tournament. It is a single-elimination tournament with four rounds. Syracuse finished with the best regular season conference record and was awarded the #1 seed.

Seton Hall defeated Georgetown in the championship game 74–62, to claim its first Big East tournament championship.

Awards
Dave Gavitt Trophy (Most Valuable Player): Oliver Taylor, Seton Hall

All Tournament Team
 * Anthony Avent, Seton Hall
 * Marc Dowdell, Villanova
 * Alonzo Mourning, Georgetown
 * Eric Murdock, Providence
 * Dikembe Mutombo, Georgetown
 * Oliver Taylor, Seton Hall