The 2018–19 Marquette Golden Eagles men's basketball team represented Marquette University in the 2018–19 NCAA Division I men's basketball season. The Golden Eagles, led by fifth-year head coach Steve Wojciechowski, played their home games for the first time at Fiserv Forum as members of the Big East Conference. They finished the season 24-10, to finish for 2nd place. In the Big East tournament, they defeated St John’s in the Quarterfinals before losing to Seton Hall in the semifinals. They received an at-large bid to the NCAA Tournament where they were upset by Murray State in the First Round.