2021 Men's ACAA Tournament

Under Construction

The 2021 ACAA Men's Basketball Tournament was a single-elimination tournament of 32 teams to determine the men's American Collegiate Athletic Association (ACAA) college basketball national champion for the 2020–21 NCAA Division I men's basketball season. The 24th edition of the tournament began play on March 19 in sites around the state of Oklahoma, and concluded with the championship game at Chesapeake Energy Arena in Oklahoma City on April 2, with Wisconsin defeating Texas, 93-89 in overtime.

NYU were the defending champions, but they lost in the Sweet 16 to eventual champions Wisconsin.