2020–21 Thai League 3 Southern Region
The 2020–21 Thai League 3 Southern region is a region in the regional stage of the 2020–21 Thai League 3. Due to the COVID-19 pandemic, the season must be postponed to start in late 2020 and end in early 2021. In addition, the Thai League 4 had combined with the Thai League 3 and compete as Thai League 3 since this season and there is no relegation in this season. A total of 12 teams located in Southern of Thailand will compete in the league of the Southern region. In late December 2020, COVID-19  had spread again in Thailand, the FA Thailand must abruptly end the regional stage of the Thai League 3. Teams. Foreign players. A T3 team could register four foreign players by at least one player from AFC member countries. A team can use four foreign players on the field in each game, including at least one player from the AFC member countries (3+1). League table. Standings. <onlyinclude></onlyinclude>