The 2015 WAC men's basketball tournament was a postseason men's basketball tournament for the Western Athletic Conference, held from March 12–14, 2015 at the Orleans Arena in Paradise, Nevada.

The tournament was won by New Mexico State, who defeated Seattle in the final.

[1] Grand Canyon did not compete in the 2015 men's basketball tournament for the second time.

As a D2 to D1 transitioning school, they are ineligible to compete in the NCAA tournament or the NIT (which is also operated by the NCAA) until the 2018 season, so they could not win the conference tournament as the winner received an automatic bid to the NCAA Tournament.

(The Antelopes did in fact receive a bid to, and participated in, the 2015 CIT.)