The 1985 Big East men's basketball tournament took place at Madison Square Garden in New York City, from March 6 to March 9, 1985. Its winner received the Big East Conference's automatic bid to the 1985 NCAA tournament. It is a single-elimination tournament with four rounds. St. John's had the best regular season conference record and received the #1 seed. Georgetown defeated St. John's in the championship game 92–80, to claim its second straight Big East tournament championship, and fourth overall.

Bracket

First round summary

Quarterfinals summary

Semifinals summary

Championship game summary

Awards

Most Valuable Player: Patrick Ewing, Georgetown All Tournament Team