Thai League 2
Thai League 2, commonly known as the T2, formally called Thai Division 1 League, is the second-tier professional league in the Thai football league system. The top 3 are promoted to Thai League 1 at the end of the season, whilst four are relegated to Thai League 3.
For the 2008 season, the Football Association of Thailand reduced the number of teams in the league to 16 teams. Previously there had been two groups of 12 clubs. For the 2011 season the number of teams was increased to 18 teams, The Thai Division 1 League is a season run from March to October, with teams playing 34 games each totalling 306 games in the season. In 2016, the Khǒr Royal Cup became a trophy for Thai Division 1 League. In 2017 the Football Association of Thailand changed the name to Thai League 2. It is sponsored by Osotspa M-150 and therefore officially known as the Thai League 2 M-150 Championship.
Promotion and relegation
The top three teams will be promoted to the Thai League 1. The top team as champions.The bottom three teams will be relegated to the Thai League 3.
Champions History
(Champions of the 2nd tier [Thai [football league system]])
| # | Season | Winner | Runner Up | Third Place |
| 1 | 1997-98 | Krung Thai Bank | Osotsapa | Thailand Tobacco Monopoly |
| 2 | 1998-99 | Bangkok Bank of Commerce | Assumption College Sriracha | |
| 3 | 1999-2000 | Royal Thai Police | Royal Thai Navy | |
| 4 | 2000-01 | Tobacco Monopoly | Bangkok Christian College | |
| 5 | 2001-02 | Bangkok Christian College | ||
| 6 | 2002-03 | Bangkok University | Royal Thai Navy | Provincial Electricity Authority |
| 7 | 2003-04 | TOT | PEA | |
| 8 | 2004-05 | Royal Thai Army | Thai Honda | |
| 9 | 2005-06 | Royal Thai Police | Royal Thai Navy | |
| 10 | 2007 | Customs Department | Chula-Sinthana | Coke-Bangpra |
| 11 | 2008 | Muangthong United | Sriracha | Royal Thai Navy |
| 12 | 2009 | Police United | Royal Thai Army | Sisaket |
| 13 | 2010 | Sriracha | Khon Kaen | Chiangrai United |
| 14 | 2011 | Songkhla | Chainat | BBCU |
| 15 | 2012 | Ratchaburi | Suphanburi | Bangkok United |
| 16 | 2013 | Air Force AVIA | Singhtarua | PTT Rayong |
| 17 | 2014 | Nakhon Ratchasima | Saraburi | Siam Navy |
| 18 | 2015 | Police United | Pattaya United | Sukhothai |
| 19 | 2016 | Thai Honda | Ubon UMT United | Port |
| 20 | 2017 | Chainat Hornbill | Air Force Central | PT Prachuap |
| 21 | 2018 | PTT Rayong | Trat | Chiangmai |
| 22 | 2019 | BG Pathum United | Police Tero | Rayong |
Number of wins
Stadiums and locations (2020)
| Team | Location | Stadium | Capacity |
| Ayutthaya United | Ayutthaya | Ayutthaya Provincial Stadium | 6,000 |
| Chainat Hornbill | Chainat | Khao Plong Stadium | 8,625 |
| Chiangmai | Chiang Mai | Chiangmai Municipality Stadium | 5,000 |
| Chiangmai United | Chiang Mai | RMUTL Stadium | 2,500 |
| Customs United | Samut Prakan | Customs Department Stadium, Ladkrabang 54 | 2,000 |
| Kasetsart | Bangkok | TOT Stadium Chaeng Watthana | 5,000 |
| Khonkaen | Khon Kaen | Khonkaen PAO. Stadium | 7,000 |
| Khonkaen United | Khon Kaen | Khonkaen PAO. Stadium | 7,000 |
| Lampang | Lampang | Lampang Provincial Stadium | 5,500 |
| Nakhon Pathom United | Nakhon Pathom | Nakhon Pathom Municipality Sport School Stadium | 6,000 |
| Navy | Chonburi | Sattahip Navy Stadium | 6,000 |
| Nongbua Pitchaya | Nongbua Lamphu | Nongbua Lamphu Provincial Stadium | 4,333 |
| Phrae United | Phrae | Thunghong Municipality Stadium | 4,500 |
| Ranong United | Ranong | Ranong Provincial Stadium | 7,000 |
| Samut Sakhon | Samut Sakhon | Samut Sakhon Provincial Stadium | 3,500 |
| Sisaket | Sisaket | Sri Nakhon Lamduan Stadium | 10,000 |
| Udon Thani | Udon Thani | SAT Stadium Udon Thani | 10,000 |
| Uthai Thani | Uthai Thani | Uthai Thani Province Stadium | 4,477 |
Stadiums (2020)
Primary venues used in the Thai League 2:| Ayutthaya United | Chainat Hornbill | Chiangmai | Chiangmai United | Kasetsart | Khon Kaen |
| Ayutthaya Province Stadium | Khao Plong Stadium | Chiangmai Municipality Stadium | RMUTL Stadium | TOT Stadium Chaeng Watthana | Khonkaen PAO. Stadium |
| Capacity: 6,000 | Capacity: 8,625 | Capacity: 5,000 | Capacity: 2,500 | Capacity: 5,000 | Capacity: 7,000 |
| Khon Kaen United | Lampang | MOF Customs United | Nakhon Pathom United | Navy | Nongbua Pitchaya |
| Khonkaen PAO. Stadium | Lampang Province Stadium | Lad Krabang 54 Stadium | Nakhon Pathom Municipality Sport School Stadium | Sattahip Navy Stadium | Nong Bua Lamphu Province Stadium |
| Capacity: 7,000 | Capacity: 5,500 | Capacity: 2,000 | Capacity: 6,000 | Capacity: 6,000 | Capacity: 4,500 |
| Phrae United | Ranong United | Samut Sakhon | Sisaket | Udon Thani | Uthai Thani |
| Thunghong Municipality Stadium | Ranong Provincial Stadium | Samut Sakhon Province Stadium | Sri Nakhon Lamduan Stadium | SAT Stadium Udon Thani | Uthai Thani Province Stadium |
| Capacity: 4,500 | Capacity: 7,000 | Capacity: 3,500 | Capacity: 10,000 | Capacity: 10,000 | Capacity: 4,477 |
Awards
Top scorers
Prize money
- Champion : 5,000,000 Baht
- Runner-up : 3,000,000 Baht
- Third Place : 1,000,000 Baht