The 1991 CCHA Men's Ice Hockey Tournament was the 20th CCHA Men's Ice Hockey Tournament. It was played between March 1 and March 9, 1991. First round games were played at campus sites, while 'final four' games were played at Joe Louis Arena in Detroit, Michigan. By winning the tournament, Lake Superior State received the Central Collegiate Hockey Association's automatic bid to the 1991 NCAA Division I Men's Ice Hockey Tournament.