The 2020–21 Jacksonville State Gamecocks men's basketball team represented Jacksonville State University (JSU) in the 2020–21 NCAA Division I men's basketball season.

The Gamecocks, led by fifth-year head coach Ray Harper, played home games at the Pete Mathews Coliseum in Jacksonville, Alabama in their 18th and final season as members of the Ohio Valley Conference (OVC).

JSU returned to the ASUN Conference, which it had left in 2003 to join the OVC, on July 1, 2021.

They lost in the first round of the OVC tournament to Eastern Illinois.

[2] Roster Last update: January 5, 2021 Source:[3]