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 lost in the first round of the Big East tournament to Georgetown.

[1] On March 19, 2021, the school fired head coach Steve Wojciechowski.

[2] A week later, the school named Texas head coach Shaka Smart the team's new head coach.