The 2020–21 Abilene Christian Wildcats men's basketball team represented Abilene Christian University (ACU) in the 2020–21 NCAA Division I men's basketball season.

The Wildcats, led by tenth-year head coach Joe Golding, were members of the Southland Conference.

Due to renovations at their usual home arena of Moody Coliseum, they played their home games on temporary stands and court set up on the indoor tennis courts of the Teague Special Events Center.

ACU and three other schools from Texas will leave that league on July 1, 2021 to join the Western Athletic Conference.

They defeated Lamar and Nicholls to be champions of the Southland tournament.