| Mode: | Basketball |
| Year: | 2020–21 |
| Prev Year: | 2019–20 |
| Next Year: | 2021–22 |
| Team: | Marshall Thundering Herd |
| Conference: | Conference USA |
| Division: | East Division |
| Short Conf: | C-USA |
| Record: | 15–7 |
| Conf Record: | 9–5 |
| Hc Year: | 7th |
| Asst Coach1: | Mark Cline |
| Asst Coach2: | Scott Rigot |
The 2020–21 Marshall Thundering Herd men's basketball team represented Marshall University during the 2020–21 NCAA Division I men's basketball season. The Thundering Herd, led by seventh-year head coach Dan D'Antoni, played their home games at the Cam Henderson Center as members of the East Division of Conference USA. They finished the season 15–7, 9–5 in C-USA play to finish in third place in the East Division. They were defeated in the second round of the C-USA tournament by Rice.
The Thundering Herd finished the 2019–20 season 17–15, 10–8 in C-USA play to finish in sixth place. They defeated UTEP in the opening round of the C-USA tournament, and they were scheduled to play Louisiana Tech in the quarterfinals. However, the remainder of the tournament was canceled due to the coronavirus pandemic.[1]
| Name | Number | Pos. | Height | Weight | Year | Hometown | Notes | |
|---|---|---|---|---|---|---|---|---|
| Cam Brooks-Harris | 24 | F | 6'6" | 175 | RS Freshman | Transferred to Tallahassee Community College | ||
| Dajour Rucker | 32 | F | 6'7" | 250 | Freshman | Left team for personal reasons | ||
| Robby Williams | 14 | G | 5'10" | 150 | Freshman | Walk-on; transferred to Coastal Alabama Community College |
|-!colspan=12 style=| Non-Conference Regular season|-!colspan=9 style=| Conference USA regular season|-!colspan=9 style=| Conference USA tournament[2] [3]