The 2023–24 Thai League 3 Southern region is a region in the regional stage of the 2023–24 Thai League 3. The tournament was sponsored by Rising Sun fertilizer, and known as the Rising Sun Fertilizer League for sponsorship purposes. A total of 12 teams located in Southern of Thailand will compete in the league of the Southern region.
Changes from last season
Promotion or relegation
Renaming
Teams
Number of teams by province
Stadiums and locations
Foreign players
A T3 team could register 3 foreign players from foreign players all around the world. A team can use 3 foreign players on the field in each game. Note :: players who released during second leg transfer window;: players who registered during second leg transfer window. { |class="unsortable" |- | style="width:15px; background:#ffdddd;"| ||Other foreign players. |- | style="width:15px; background:#ffffdd;"| ||AFC member countries players. |- | style="width:15px; background:#ddffdd;"| ||ASEAN member countries players. |- | style="width:15px; background:#c8ccd1;"| ||No foreign player registered. |}