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.
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 coronavirus 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, following the European calendar. The top four teams after the first half of the season will qualify for the 2021 AFC Champions League. For the 2022 AFC Champions League, the same criteria as before 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.
Teams
There are 16 clubs in the league, with three promoted teams from Thai League 2 replacing the two teams that were relegated from the 2019 season along with PTT Rayong who folded at the end of the campaign. All clubs that secured Thai League status for the season were subject to approval by the AFC Club Licensing before becoming eligible to participate.Chainat Hornbill and Chiangmai were relegated at the end of the 2019 season after finishing in the bottom two places of the table. PTT Rayong withdrew from the league after the season, sparing Suphanburi from relegation. They were replaced by 2019 Thai League 2 champions BG Pathum United, whom played under the name Bangkok Glass in the 2018 Thai League 1 campaign. They were joined by runners up Police Tero, who also got promoted at the first time of asking and 3rd place Rayong. Rayong was founded in 2009 and earned promotion to the Thai League 1 for the first time in their history.
Stadium and locations
| Team | Province | Stadium | Capacity |
| Bangkok United | Pathum Thani | Thammasat Stadium | 19,375 |
| BG Pathum United | Pathum Thani | Leo Stadium | 9,000 |
| Buriram United | Buriram | Chang Arena | 32,600 |
| Chiangrai United | Chiangrai | Singha Stadium | 13,000 |
| Chonburi | Chonburi | Chonburi Stadium | 8,680 |
| Muangthong United | Nonthaburi | SCG Stadium | 12,505 |
| Nakhon Ratchasima | Nakhon Ratchasima | 80th Birthday Stadium | 24,641 |
| Police Tero | Bangkok | Boonyachinda Stadium | 3,550 |
| Port | Bangkok | PAT Stadium | 6,000 |
| PT Prachuap | Sam Ao Stadium | 5,000 | |
| Ratchaburi Mitr Phol | Ratchaburi | Mitr Phol Stadium | 10,000 |
| Rayong | Rayong | Rayong Provincial Stadium | 7,500 |
| Samut Prakan City | Samut Prakan | Samut Prakarn SAT Stadium | 5,130 |
| Sukhothai | Sukhothai | Thung Thalay Luang Stadium | 8,000 |
| Suphanburi | Suphanburi | Suphan Buri Provincial Stadium | 15,279 |
| Trat | Trat | Trat Provincial Stadium | 5,000 |
Personnel and sponsoring
Note: Flags indicate national team as has been defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.| Team | Head coach | Captain | Kit manufacturer | Shirt sponsors |
| Bangkok United |  Alexandré Pölking |  Anthony Ampaipitakwong | Ari | True Huawei Daikin CP Smart Heart Toyota Ziebart Euro Cake |
| BG Pathum United | Dusit Chalermsan | Surachat Sareepim | Nike | Leo Umay+ Euro Cake Mitsubishi Electric Vichaiyut Hospital Thai-Denmark Cartoon Club |
| Buriram United |  Božidar Bandović | Siwarak Tedsungnoen | Made by club Ari | Chang Grab Rabbit Coca-Cola Muang Thai Insurance King Power Yamaha Thai AirAsia I-Mobile TrueVisions CP Amari Hotel Jele |
| Chiangrai United |  Masami Taki | Phitiwat Sukjitthammakul | Made by club Grand Sport | Leo Bangkok Airways TOA |
| Chonburi | Sasom Pobprasert | Kroekrit Thaweekarn | Nike | Chang Euro Cake |
| Muangthong United | Alexandre Gama | Wattana Playnum | Shoot | SCG Yamaha Coca-Cola AIA Herbalife Nutrition I-Mobile Gulf Sharp Corporation |
| Nakhon Ratchasima | Teerasak Po-on | Chalermpong Kerdkaew | Grand Sport | Mazda Leo CP Central Plaza Gulf |
| Police Tero | Rangsan Viwatchaichok | Adisak Srikampang | FBT | Chang CP Channel 3 |
| Port | Jadet Meelarp |  David Rochela | Grand Sport | Muang Thai Insurance AirAsia CP Thai AirAsia Thai Union |
| PT Prachuap | Thawatchai Damrong-Ongtrakul | Adul Muensamaan | Warrix | PTG Energy Euro Cake 2Gear |
| Ratchaburi Mitr Phol | Chaitud Uamtham | Philip Roller | Made by club | Mitr Phol Kubota Chang Euro Cake |
| Rayong | Arthur Bernardes | Anuchit Ngrnbukkol | Volt | Gulf |
| Samut Prakan City | Masatada Ishii | Peeradon Chamratsamee | Ari | Sanwa AirAsia |
| Sukhothai | Surapong Kongthep |  John Baggio | Mawin | Chang Carabao CP |
| Suphanburi |  Adebayo Gbadebo | Suphan Thongsong | Warrix | Chang True |
| Trat | Phayong Khunnaen | Pornpreecha Jarunai | Grand Sport | CP Chang |
Managerial changes
Foreign Players
FIFA Transfer Window Period for Thailand 19-Nov-2019 to 10-Feb-2020, and 15-Jun to 12-Jul 2020.| Club | Player 1 | Player 2 | Player 3 | Asian Player | ASEAN 1 | ASEAN 2 | ASEAN 3 | Former |
| Bangkok United | Everton | Brenner Marlos |  Nelson Bonilla | Hajime Hosogai |  Michael Falkesgaard | Vander | ||
| Buriram United |  Renato Kelić |  Marko Šćepović |  Gidi Kanyuk |  Akbar Ismatullaev | Kevin Ingreso |  Jung Jae-yong  Andrés Túñez Ricardo Bueno  Bernardo Cuesta | ||
| BG Pathum United | Victor Cardozo | Andrés Túñez | Toti | Yuki Bamba |  Norshahrul Idlan Talaha | Álvaro Silva |  Irfan Fandi | Barros Tardeli |
| Chiangrai United | Bill | Brinner | Mailson | Lee Yong-rae | ||||
| Chonburi | Caion | Júnior Lopes | Dragan Bošković | Kazuto Kushida | Carli de Murga | |||
| Muangthong United | Derley | Lucas Rocha | Willian Popp | Sardor Mirzaev | Daisuke Sato |  Đặng Văn Lâm | ||
| Nakhon Ratchasima | Dennis Murillo | Leandro Assumpção |  Amadou Ouattara | Yoon Jun-sung | ||||
| Port | Heberty | David Rochela | Sergio Suárez | Go Seul-ki | Martin Steuble | |||
| PT Prachuap | Willen Mota | William Henrique | Adnan Orahovac | Yoo Jun-soo | Iain Ramsay |  Soukaphone Vongchiengkham |  Yanto Basna | Baihakki Khaizan Bruno Mezenga |
| Police Tero |  Greg Houla |  Issac Honey | Kwon Dae-hee | Dominic Tan | Matheus Alves | |||
| Ratchaburi | Lossémy Karaboué | Yannick Boli |  Steeven Langil | Yeo Sung-hae | Javier Patiño | Luke Woodland | ||
| Rayong | Park Tae-hyeong | Outthilath Nammakhoth | Tiago Chulapa Bireme Diouf  Leandro Resida | |||||
| Samut Prakan City | Barros Tardeli |  Aris Zarifović | Yuto Ono | Tatsuya Sakai | Pedro Júnior | |||
| Sukhothai | Evandro Paulista | Ibson Melo | John Baggio | Jung Myung-oh |  Zaw Min Tun | Kyaw Ko Ko | ||
| Suphanburi | Alef | Eliandro | Felipe Amorim | Ryutaro Karube | Patrick Deyto | Patrick Reichelt | Zulfahmi Arifin | |
| Trat | Ricardo Santos | Wellington Priori | Aung Kaung Mann | Amani Aguinaldo | Afiq Yunos  Adefolarin Durosinmi Kang Soo-il Izwan Mahbud |
League table
Positions by round
Results by match played
Results
Season statistics
Top scorers
| Rank | Player | Club | Goals |
| 1 | Supachok Sarachat | Buriram United | 4 |
| 1 | Heberty | Port | 4 |
| 3 | Caion | Chonburi | 3 |
| 3 | Derley | Muangthong United | 3 |
| 3 | Yannick Boli | Ratchaburi Mitr Phol | 3 |
| 3 | Jhon Baggio | Sukhothai | 3 |
| 7 | Thitiphan Puangjan | BG Pathum United | 2 |
| 7 | Ricardo Bueno | Buriram United | 2 |
| 7 | Sergio Suárez | Port | 2 |
| 7 | Adisak Kraisorn | Port | 2 |
| 7 | William Henrique | PT Prachuap | 2 |
| 7 | Javier Patiño | Ratchaburi Mitr Phol | 2 |
| 7 | Philip Roller | Ratchaburi Mitr Phol | 2 |
| 7 | Chayawat Srinawong | Samut Prakan City | 2 |
| 7 | Evandro Paulista | Sukhothai | 2 |
| 7 | Kasidech Wettayawong | Suphanburi | 2 |
Top assists
| Rank | Player | Club | Assists |
| 1 | Vander Luiz | Bangkok United | 2 |
| 1 | Bill | Chiangrai United | 2 |
| 1 | Bordin Phala | Port | 2 |
| 4 | Barros Tardeli | BG Pathum United | 1 |
| 4 | Bernardo Cuesta | Buriram United | 1 |
| 4 | Sasalak Haiprakhon | Buriram United | 1 |
| 4 | Supachok Sarachat | Buriram United | 1 |
| 4 | Suphanat Mueanta | Buriram United | 1 |
| 4 | Chaiyawat Buran | Chiangrai United | 1 |
| 4 | Kritsada Kaman | Chonburi | 1 |
| 4 | Noppanon Kachaplayuk | Chonburi | 1 |
| 4 | Thitawee Aksornsri | Police Tero | 1 |
| 4 | Sergio Suárez | Port | 1 |
| 4 | Kevin Deeromram | Port | 1 |
| 4 | Steeven Langil | Ratchaburi Mitr Phol | 1 |
| 4 | Jakkapan Pornsai | Ratchaburi Mitr Phol | 1 |
| 4 | Jaroensak Wonggorn | Samut Prakan City | 1 |
| 4 | Jhon Baggio | Sukhothai | 1 |
| 4 | Eliandro | Suphanburi | 1 |
| 4 | Felipe Amorim | Suphanburi | 1 |
| 4 | Adefolarin Durosinmi | Trat | 1 |
Hat-tricks
Clean sheets
| Rank | Player | Club | Clean sheets |
| 1 | Chatchai Budprom | BG Pathum United | 3 |
| 2 | Somporn Yos | Muangthong United | 2 |
| 2 | Prasit Padungchok | Police Tero | 2 |
| 2 | Ukrit Wongmeema | Ratchaburi Mitr Phol | 2 |
| 2 | Sahawit Khumpiam | Suphanburi | 2 |
| 6 | Michael Falkesgaard | Bangkok United | 1 |
| 6 | Siwarak Tedsungnoen | Buriram United | 1 |
| 6 | Apirak Woravong | Chiangrai United | 1 |
| 6 | Sinthaweechai Hathairattanakool | Chonburi | 1 |
| 6 | Kwanchai Suklom | PT Prachuap | 1 |
| 6 | Peerapong Ruenin | Sukhothai | 1 |