The 1991 NCAA Division II men's basketball tournament involved 32 schools playing in a single-elimination tournament to determine the national champion of men's NCAA Division II college basketball as a culmination of the 1990-91 NCAA Division II men's basketball season.
It was won by the University of North Alabama and Bridgeport's Lambert Shell was the Most Outstanding Player.
*denotes tie Location: Andrew Laska Gymnasium Host: Assumption College Location: Morrow Field House Host: Slippery Rock University of Pennsylvania Location: CMSU Fieldhouse Host: Central Missouri State University Location: CSUB Student Activities Center Host: California State University, Bakersfield Location: Hyslop Sports Center Host: University of North Dakota Location: Brayboy Gymnasium Host: Johnson C. Smith University Location: Sartain Hall Host: Troy State University Location: Kates Gymnasium Host: Ashland University *denotes each overtime played Location: Springfield Civic Center Hosts: American International College and Springfield College *denotes each overtime played