The 2020–21 Tarleton State Texans men's basketball team represented Tarleton State University in the 2020–21 NCAA Division I men's basketball season.

The Texans, led by first-year head coach Billy Gillispie, played their home games at the Wisdom Gym in Stephenville, Texas as first-year members of the Western Athletic Conference (WAC).

As a result, the Texans were not eligible for NCAA postseason play and could not participate in the WAC tournament.

They were eligible to play in the CIT or CBI, but were not invited.

10 seed UT Permian Basin in the opening round, 84–68.