| Mode: | basketball |
| Year: | 2020–21 |
| Prev Year: | 2019–20 |
| Next Year: | 2021–22 |
| Team: | UMass Lowell River Hawks |
| Conference: | America East Conference |
| Short Conf: | America East |
| Record: | 11–12 |
| Conf Record: | 7–8 |
| Head Coach: | Pat Duquette |
| Hc Year: | 8th |
| Asst Coach1: | Biko Paris |
| Asst Coach2: | Nick Leonardelli |
| Asst Coach3: | Louis Hinnant |
| Stadium: | Costello Athletic Center |
The 2020–21 UMass Lowell River Hawks men's basketball team represented the University of Massachusetts Lowell in the 2020–21 NCAA Division I men's basketball season. They were led by eighth-year head coach Pat Duquette and played their home games at the Costello Athletic Center in Lowell, Massachusetts as members of the America East Conference. In a season limited due to the ongoing COVID-19 pandemic, the River Hawks finished the season 11–12, 7–9 in America East play, to finish in sixth place.[1] They defeated Stony Brook,[2] New Hampshire[3] and UMBC to advance to the championship of the America East tournament.[4] In the championship game, they lost to Hartford.[5]
The River Hawks finished the 2019–20 season 13–19, 7–9 in America East play to finish in a tie for sixth place.[6] They lost in the quarterfinals of the America East tournament to Hartford.[7]
|-!colspan=12 style=| Regular season|-!colspan=12 style=| America East tournament|-Source:[8]