| Season | 2019 |
|---|---|
| Dates | 9 February 2019 – 7 September 2019 |
| Champions | Nakhon Pathom United |
| Relegated | Royal Thai Army Surat Thani |
| Final | Nakhon Pathom United |
| Third place play-off | Ranong United |
| Matches played | 182 |
| Goals scored | 473 (2.6 per match) |
| Top goalscorer |  Diego Oliveira Silva(13 goals; Nakhon Pathom United)  Tomohiro Onodera(13 goals; Ranong United) |
| Biggest home win | 6 goals difference Nakhon Pathom United 6–0 Surat Thani (7 September 2019) |
| Biggest away win | 5 goals difference Surat Thani 0–5 Royal Thai Army (2 March 2019) Surat Thani 0–5 Nakhon Si United (19 May 2019) Surat Thani 0–5 Ranong United (31 August 2019) |
| Highest scoring | 9 goals Nakhon Pathom United 7–2 Royal Thai Army (21 August 2019) |
| Longest winning run | 7 matches Nakhon Pathom United |
| Longest unbeaten run | 20 matches Nakhon Pathom United |
| Longest winless run | 21 matches Surat Thani |
| Longest losing run | 8 matches Surat Thani |
| Highest attendance | 1,892 Nakhon Pathom United 6–0 Surat Thani (8 September 2019) |
| Lowest attendance | 79 Surat Thani 0–2 Kasem Bundit University (3 August 2019) |
| Total attendance | 73,327 |
| Average attendance | 405 |
← 2018 2020–21 → | |
2019 Thai League 3 Lower Region is the 3rd season of the Thai football league. It is a part of the Thai League 3 and the feeder league for the Thai League 2. A total of 14 teams will compete in the league this season.