2020–21 Thai League 1
The 2020–21 Thai League 1 is the 24th season of the Thai League 1, the top Thai professional league for association football clubs, since its establishment in 1996, also known as Toyota Thai League due to the sponsorship deal with Toyota Motor Thailand. A total of 16 teams will compete in the league. The season began on 14 February 2020 and is scheduled to conclude in October 2020.
| Season | 2020–21 |
|---|---|
| Dates | 14 February 2020 – 28 March 2021 |
| Champions | BG Pathum United |
| Relegated | Rayong Sukhothai Trat |
| 2021 AFC Champions League | BG Pathum United Port Chiangrai United Ratchaburi Mitr Phol |
| 2022 AFC Champions League | BG Pathum United Buriram United Chiangrai United Port |
| Matches played | 240 |
| Goals scored | 703 (2.93 per match) |
| Top goalscorer | Barros Tardeli (25 goals) |
| Biggest home win | 5 goals difference Suphanburi 5–0 Police Tero (30 October 2020) Bangkok United 5–0 Trat (10 March 2021) |
| Biggest away win | 6 goals difference Samut Prakan City 0–6 BG Pathum United (28 February 2021) |
| Highest scoring | 9 goals Bangkok United 4–5 Sukhothai (18 October 2020) Rayong 2–7 Port (18 October 2020) Samut Prakan City 6–3 Port (27 December 2020) |
| Longest winning run | 11 matches BG Pathum United |
| Longest unbeaten run | 29 matches BG Pathum United |
| Longest winless run | 12 matches Rayong |
| Longest losing run | 9 matches Rayong |
| Highest attendance | 15,590 Buriram United 4–0 Chonburi (22 February 2020) |
| Lowest attendance | 0 |
| Total attendance | 582,639 |
| Average attendance | 3,310 |
← 2019 2021–22 →
All statistics correct as of 28 March 2021. | |
The 1st transfer window is from 11 November 2019 to 3 February 2020 while the 2nd transfer window is from 15 June 2020 to 12 July 2020.
Chiangrai United are the defending champions, while BG Pathum United, Police Tero and Rayong have entered as the promoted teams from the 2019 Thai League 2.
On March 1, all of Thai League 1 matches between 7 and 31 March will be played behind closed doors as broadcast only events. However, on March 4, the decision changed to postpone all of matches prior to 18 April due to the COVID-19 pandemic in Thailand.
In April 2020, the Football Association of Thailand announced that the season would restart in September 2020 and end in May 2021, with the top four teams after the first half of the season qualifying for the 2021 AFC Champions League. For the 2022 AFC Champions League, the same criteria as applied in previous years will be followed, with the league and Thai FA Cup winners qualifying for the group stage, and the league runners-up and 3rd place qualifying for the play-offs.