The 2020 Jacksonville State Gamecocks football team represented Jacksonville State University as a member of the Ohio Valley Conference (OVC) during the 2020–21 NCAA Division I FCS football season.

Led by seventh-year head coach John Grass, the Gamecocks compiled an overall record of 10–3, with a mark of 6–1 conference play, winning the OVC title.

Jacksonville State received the OVC's automatic bid to the NCAA Division I Football Championship.

The Gamecocks defeated Davidson in the first round before losing to Delaware in the quarterfinals.

The team played home games at Burgess–Snow Field at JSU Stadium in Jacksonville, Alabama.