| Mode: | Basketball |
| Year: | 1990–91 |
| Team: | Mississippi State Bulldogs |
| Conference: | Southeastern Conference |
| Short Conf: | SEC |
| Coachrank: | 18 |
| Aprank: | 21 |
| Record: | 20–9 |
| Conf Record: | 13–5 |
| Hc Year: | 5th |
| Ac1 Year: | 1st |
| Bowl Result: | Round of 64 |
The 1990–91 Mississippi State Bulldogs men's basketball team represented Mississippi State University in the 1990–91 NCAA Division I men's basketball season. Led by head coach Richard Williams, the Bulldogs finished with a 20–9 record (13–5 SEC) and received an at-large bid to the NCAA tournament as No. 5 seed in the East region.[1]
|-!colspan=9 style=| Non-conference regular season
|-!colspan=9 style=| SEC Regular Season|-!colspan=9 style=| SEC Tournament|-!colspan=9 style=| NCAA TournamentSources[2]
See main article: 1990–91 NCAA Division I men's basketball rankings.