The 2020–21 Marquette Golden Eagles men's basketball team represented Marquette University during the 2020–21 NCAA Division I men's basketball season. The team was led by seventh-year head coach Steve Wojciechowski, and played their home games at Fiserv Forum in Milwaukee, Wisconsin as a member of the Big East Conference. They finished the season 13–14, 8–11 in Big East play to finish in ninth place. They lost in the first round of the Big East tournament to Georgetown.