The 1990–91 Arkansas Razorbacks men's basketball team represented the University of Arkansas in the 1990–91 college basketball season. The head coach was Nolan Richardson, serving for his sixth year. The team played its home games in Barnhill Arena in Fayetteville, Arkansas. This was Arkansas's final season in the Southwest Conference. The school joined the Southeastern Conference the next season. The Hogs won their third straight, and final, SWC regular season and conference tournament championships. Arkansas was the #1 seed in the Southeast Regional of the NCAA tournament, and defeated Georgia State, Arizona State, and Alabama, before losing to the Kansas Jayhawks in the Elite Eight.

Roster

Schedule and results

!colspan=9 style=| Exhibition Games !colspan=9 style=| Regular season !colspan=9 style=| SWC Tournament !colspan=9 style=| NCAA Tournament Sources

Rankings

Awards and honors