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

The Bengals, led by sixth-year head coach Bill Evans, played their home games at Holt Arena and Reed Gym in Pocatello, Idaho as members of the Big Sky Conference.

They lost in the first round of the Big Sky tournament to Southern Utah.

10 seed in the Big Sky tournament, they lost in the first round to Sacramento State.

Idaho State did not have any incoming players in the 2017 recruiting class.