The 2017–18 SMU Mustangs men's basketball team represents Southern Methodist University during the 2017–18 NCAA Division I men's basketball season. The Mustangs were led by second-year head coach Tim Jankovich and play their home games at Moody Coliseum on their campus in University Park, Texas as members of the American Athletic Conference. They finished the season 17–16, 6–12 in AAC play to finish in ninth place. In the AAC tournament, they defeated UConn before losing to Cincinnati in the quarterfinals.