The 2018 Big Sky Conference men's basketball tournament was the postseason men's basketball tournament for the Big Sky Conference.
Regular-season champion Montana defeated Eastern Washington in the championship game to win the tournament and receive the conference's automatic bid to the NCAA tournament.
* denotes overtime period Source:[1][2] The Grizzlies received the automatic bid to the NCAA tournament; no other Big Sky members were invited to the tournament or the NIT.
Montana was seeded 14th in the West regional and lost by fourteen to Michigan in the first round in Wichita.
The last Big Sky team to advance in the NCAA tourney was Montana, a dozen years earlier in 2006.