The 2017–18 Marquette Golden Eagles men's basketball team represented Marquette University in the 2017–18 NCAA Division I men's basketball season. The Golden Eagles, led by fourth-year head coach Steve Wojciechowski, played their home games at the BMO Harris Bradley Center as members of the Big East Conference. They finished the season 21–14, 9–9 in Big East play to finish in a tie for sixth place. As the No. 7 seed in the Big East tournament, they defeated DePaul in the first round before losing to eventual tournament champion Villanova in the quarterfinals. They received an at-large bid to the National Invitation Tournament where they defeated Harvard in the first round and Oregon in the second round before losing to Penn State in the quarterfinals.