2016 Thai Football Division 3 Tournament Southern Region is the 1st season of the League competition since its establishment in 2016. It is in the fourth tier of the Thai football league system.
All matches played in Wiang Sa District, Surat Thani
| Section | Club | Province | Years | |
|---|---|---|---|---|
| 1 | Nakhon Si Thammarat | 2016 | ||
| 1 | Sungaipadee | Narathiwat | 2016 | |
| 1 | Surat Thani United | Surat Thani | 2016 | |
| 1 | Newball Satun | Satun | 2016 |
All four teams play a one-legged round-robin match. The best two teams advance to the final round, and the winner of the final round is promoted to the 2017 Thai Division 2 League.