The 2015–16 San Diego State men's basketball team represented San Diego State University during the 2015–16 NCAA Division I men's basketball season. This was head coach Steve Fisher's seventeenth season at San Diego State. The Aztecs played their home games at Viejas Arena. They were members in the Mountain West Conference. They finished the season 28–10, 16–2 in Mountain West play to win the Mountain West regular season championship. They defeated Utah State and Nevada to advance to the championship game of the Mountain West tournament where they lost to Fresno State. As a regular season conference champion who failed to win their conference tournament, received an automatic bid to the National Invitation Tournament where they defeated IPFW, Washington, and Georgia Tech to advance to the