The 2017–18 Iowa State Cyclones men's basketball team represented Iowa State University during the 2017–18 NCAA Division I men's basketball season. The Cyclones were coached by Steve Prohm, who was in his third season at Iowa State. They played their home games at Hilton Coliseum in Ames, Iowa as members of the Big 12 Conference. They finished the season 13–18, 4–14 in Big 12 play to finish in last place. They lost in the first round of the Big 12 tournament to Texas.

Steven Marshall Prohm is an American basketball coach who is in his second tenure as the head coach for Murray State men's basketball. Previously, he was the head coach at Iowa State University, a position he had held from 2015 to 2021. Prohm served in the same capacity at Murray State University from 2011 to 2015.