2020–21 Thai League 3 Southern Region
| Season | 2020–21 |
|---|---|
| Dates | 3 October 2020 – 3 January 2021 |
| Champions | Songkhla |
| T3 National Championship | Songkhla Krabi |
| Matches played | 99 |
| Goals scored | 278 (2.81 per match) |
| Top goalscorer | George Kelbel (15 goals; Krabi) |
| Biggest home win | 12 goals difference Krabi 13–1 Surat Thani (22 November 2020) |
| Biggest away win | 4 goals difference Phatthalung 1–5 Songkhla (1 November 2020) Jalor City 0–4 Songkhla (14 November 2020) Surat Thani 2–6 Jalor City (18 November 2020) |
| Highest scoring | 14 goals Krabi 13–1 Surat Thani (22 November 2020) |
| Longest winning run | 6 matches Nara United Songkhla |
| Longest unbeaten run | 9 matches Trang |
| Longest winless run | 9 matches Patong City |
| Longest losing run | 7 matches Surat Thani |
2021–22 → | |
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.