| Mode: | basketball |
| Year: | 1990–91 |
| Team: | Richmond Spiders |
| Conference: | Colonial Athletic Association |
| Short Conf: | CAA |
| Record: | 22–10 |
| Conf Record: | 10–4 |
| Hc Year: | 10th |
| Captain: | Terry Connolly |
| Champion: | CAA tournament champions |
| Bowl Result: | Round of 32 |
The 1990–91 Richmond Spiders men's basketball team represented the University of Richmond in National Collegiate Athletic Association (NCAA) Division I college basketball during the 1990–91 season. Richmond competed as a member of the Colonial Athletic Association (CAA) under head basketball coach Dick Tarrant and played its home games at the Robins Center.
Richmond finished second in the CAA regular-season standings with a 10–4 conference record, and won the CAA tournament to earn an automatic bid to the 1991 NCAA tournament. In the opening round, the Spiders became the first #15 seed to win an NCAA Tournament game. They defeated the seventh-ranked, #2 seed Syracuse Orangemen, 73–69,[1] [2] at Cole Field House in College Park, Maryland. Richmond lost in the second round to Temple, 77–64, to finish with a 22–10 record.
|-!colspan=9 style=| Regular season |-!colspan=9 style=| CAA Tournament|-!colspan=9 style=| NCAA Tournament[3]