| Year: | 2019–20 |
| Prev Year: | 2018–19 |
| Next Year: | 2020–21 |
| Team: | Wagner Seahawks |
| Sport: | basketball |
| Conference: | Northeast Conference |
| Short Conf: | NEC |
| Record: | 8–21 |
| Conf Record: | 5–13 |
| Head Coach: | Bashir Mason |
| Hc Year: | 8th |
| Asst Coach1: | Mike Babul |
| Asst Coach2: | Donald Copeland |
| Asst Coach3: | Winston Smith |
| Stadium: | Spiro Sports Center |
The 2019–20 Wagner Seahawks men's basketball team represented Wagner College during the 2019–20 NCAA Division I men's basketball season. The Seahawks were led by eight-year head coach Bashir Mason. They played their home games at Spiro Sports Center on the school's Staten Island campus as members of the Northeast Conference. They finished the season 8–21, 5–13 in NEC play to finish in tenth place. They failed to qualify for the NEC tournament.
The Seahawks finished the 2018–19 season 13–17 overall, 8–10 in NEC play to finish in seventh place. As the No. 7 seed in the NEC tournament, they were defeated in the quarterfinals by the eventual tournament champion, Fairleigh Dickinson.
|-!colspan=12 style=| Non-Conference Regular season|-!colspan=12 style=| NEC regular season |-Source[1]