| Mode: | basketball |
| Year: | 2020–21 |
| Prev Year: | 2019–20 |
| Next Year: | 2021–22 |
| Team: | Robert Morris Colonials |
| Conference: | Horizon League |
| Short Conf: | Horizon |
| Record: | 4–15 |
| Conf Record: | 3–12 |
| Head Coach: | Andrew Toole |
| Hc Year: | 11th |
| Asst Coach1: | Mike Iuzzolino |
| Asst Coach2: | Vince Johnson |
| Asst Coach3: | Dave Fedor |
| Arena: | UPMC Events Center |
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.
The Colonials finished the 2019–20 season 20–14, 13–5 in NEC play to finish in a tie for second place. 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.
It was the last season for the Colonials in the NEC.
|-!colspan=12 style=| Non-conference regular season|-!colspan=12 style=| Horizon League tournament|-Source[1]