2011 Thai Division 1 League
2011 Thai League Division 1 is the 14th season of the League since its establishment in 1997. It is the feeder league for the Thai Premier League. A total of 18 teams will compete in the league.
League expansion
It was announced at the end of the 2010 season that the TPL would increase the number of teams for the start of the 2011 Thai Premier League season. Therefore, playoff games were arranged to promote more teams for the Regional League Division 2 and relegate less teams from the TPL. During these games, Nakhon Pathom were banned and therefore will fail to take their place in Division 1 for the next two seasons. This did mean that the league would only feature 17 teams for the season, but with less than 3 weeks before the start of the league campaign another round of playoffs was used to promote one more side, Saraburi.Changes from last season
Team changes
From Division 1
Promoted to Thai Premier LeagueRelegated to Regional League Division 2
- Prachinburi
- Narathiwat
To Division 1
Promoted from Regional League Division 2
- Buriram
- F.C. Phuket
- Chiangmai
- Chainat
- Rangsit University JW
- Bangkok
- Saraburi
Clubs serving bans
- Nakhon Pathom - 2 years
Teams
Stadia and locations
| Team | Location | Stadium | Capacity | |
| Air Force United | Pathum Thani | Thupatemee Stadium | 20,000 | |
| Bangkok | Thung Khru, Bangkok | 72-years Anniversary Stadium | 8,126 | |
| Bangkok United | Din Daeng, Bangkok | Thai-Japanese Stadium | 10,320 | |
| Buriram | Buriram | I-Mobile Stadium | 14,000 | |
| BBCU | Phaya Thai, Bangkok | Thai Army Sports Stadium | 20,000 | |
| Chainat | Chainat | Khao Plong Stadium | 5,574 | |
| Cash Today Chanthaburi | Chanthaburi | Rambhai Barni Rajabhat University Stadium | 8,800 | |
| Chiangmai | Chiang Mai | 700th Anniversary Stadium | 25,000 | |
| F.C. Phuket | Phuket | Surakul Stadium | 15,000 | |
| PTT Rayong | Rayong | Rayong Province Central Stadium PTT Stadium | 7,500 12,161 | |
| Raj Pracha F.C. Thailand | Nakhon Pathom | Mahidol University Salaya Campus Stadium | 1,000 | |
| J.W. Rangsit | Pathum Thani | Thupatemee Stadium | 20,000 | |
| RBAC | Bang Kapi, Bangkok | RBAC University Stadium | 1,000 | |
| Gulf Saraburi | Saraburi | Saraburi Provincial Administrative Organization Stadium | 5,000 | |
| Songkhla | Songkhla | Tinsulanon Stadium | 35,000 | |
| Suphanburi | Suphanburi | Suphan Buri Provincial Stadium | 16,000 | |
| Samut Prakan Customs United | Samut Prakan | Lad Krabang 54 Stadium | 1,100 | |
| Thai Honda | Min Buri, Bangkok | 72nd Anniversary Stadium | 8,000 |
Name changes
- Suvarnabhumi Customs were renamed Samut Prakan Customs United.
- Raj Pracha Nonthaburi were renamed Raj Pracha F.C. Thailand
- Chula United were renamed BBCU
- Rangsit University JW were renamed J.W. Rangsit
- PTT were renamed PTT Rayong
Ground changes
- Chanthaburi moved from the Chanthaburi Stadium to the Rambhai Barni Rajabhat University Stadium
- BBCU withdrew from the Chulalongkorn University Stadium after an internal dispute which also formed the new RL club Jamjuree United and ground shared with TPL side Army United at the Thai Army Sports Stadium
- Thai Honda moved from the KMITL Sport center football stadium to the Chalermprakiet 72 Sports Center stadium.
League table