The 2017–18 Cleveland State Vikings men's basketball team represented Cleveland State University in the 2017–18 NCAA Division I men's basketball season. They were coached by first-year head coach Dennis Felton. The Vikings played their home games at the Wolstein Center as members of the Horizon League. They finished the season 12–23, 6–12 in Horizon League play to finish in a tie for eighth place. As the No. 8 seed at the Horizon League tournament, they defeated Youngstown State and upset No. 1 seed Northern Kentucky and No. 4 seed Oakland to advance to the championship game where they lost to Wright State.