1991 Atlantic 10 men's basketball tournament

The winner was named champion of the Atlantic 10 Conference and received an automatic bid to the 1991 NCAA Men's Division I Basketball Tournament.

Temple and Rutgers also received bids to the NCAA Tournament.

Freddie Barnes of Penn State was named the tournament's Most Outstanding Player.

The top six teams in the conference received first-round byes.

The Nittany Lions played an independent schedule in 1991-92, then joined the Big Ten on July 1, 1992.