2020–21 Thai League 3 Northern Region
| Season | 2020–21 |
|---|---|
| Dates | 3 October 2020 – 3 January 2021 |
| Champions | Lamphun Warriors |
| T3 National Championship | Lamphun Warriors Phitsanulok |
| Matches played | 83 |
| Goals scored | 203 (2.45 per match) |
| Top goalscorer | Natan Oliveira (12 goals; Lamphun Warriors) Rafinha (12 goals; Wat Bot City) |
| Biggest home win | 5 goals difference Wat Bot City 6–1 Northern Tak United (18 November 2020) |
| Biggest away win | 4 goals difference Chiangrai City 0–4 Lamphun Warriors (25 October 2020) |
| Highest scoring | 7 goals Wat Bot City 6–1 Northern Tak United (18 November 2020) |
| Longest winning run | 6 matches Lamphun Warriors |
| Longest unbeaten run | 10 matches Phitsanulok |
| Longest winless run | 8 matches Chiangrai City Kamphaengphet Northern Tak United |
| Longest losing run | 6 matches Northern Tak United |
2021–22 → | |
The 2020–21 Thai League 3 Northern 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 11 teams located in Northern, Upper western, and Upper central of Thailand will compete in the league of the Northern 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. The second-placed and the third-placed of the Northern region have the similar points, so they must play-off to find a team to qualified to the national championship stage.