The 2020–21 Robert Morris Colonials men's basketball team represented Robert Morris University during the 2020–21 NCAA Division I men's basketball season.

The Colonials, led by 11th-year head coach Andrew Toole, played their home games at the UPMC Events Center in Moon Township, Pennsylvania as first-year members of the Horizon League.

They defeated St. Francis Brooklyn, LIU and Saint Francis (PA) to be champions of the NEC tournament.

They earned the NEC's automatic bid to the NCAA tournament.

However, the NCAA Tournament was cancelled amid the COVID-19 pandemic.