The 2017–18 San Diego State men's basketball team represented San Diego State University during the 2017–18 NCAA Division I men's basketball season.

The Aztecs, led by first-year head coach Brian Dutcher, played their home games at Viejas Arena as members in the Mountain West Conference.

They defeated Fresno State, Nevada, and New Mexico to become champions of the Mountain West tournament.

[1] As a result, they received the Mountain West's automatic bid to the NCAA tournament.

[5] Senior guard Trey Kell was named to the preseason All-Mountain West team.