The 2020 Mountain West Conference men's basketball tournament was the postseason men's basketball tournament for the Mountain West Conference.
It was held from March 4–7, 2020 at the Thomas & Mack Center on the campus of University of Nevada, Las Vegas, in Las Vegas, Nevada.
Utah State upset heavily favored San Diego State to earn the Mountain West's automatic bid to the NCAA tournament All 11 MW schools were eligible to participate in the tournament.
As a result, the top five teams receive byes into the tournament quarterfinals.
Tie-breaking procedures remained unchanged from the 2019 tournament, except that RPI was replaced by the NCAA's new NET rating.