2012 Thai Division 1 League
2012 Thai League Division 1 is the 15th 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 this season.
Changes from last season
Team changes
From Division 1
Promoted to 2012 Thai Premier League- BBCU
- Buriram later renamed Wuachon United and re-located from Buriram Province to Songkhla Province
- Chainat
- Chiangmai
- RBAC Mittraphap
- Samut Prakan Customs United
- Thai Honda
To Division 1
Promoted from Regional League Division 2
Stadia and locations
| Team | Location | Stadium | Capacity | |
| Air Force United | Pathum Thani | North Bangkok University Stadium Thupatemee Stadium | ? 25,000 | |
| Bangkok | Thung Khru, Bangkok | 72-years Anniversary Stadium | 8,000 | |
| Bangkok United | Din Daeng, Bangkok | Thai-Japanese Stadium | 10,320 | |
| Chanthaburi | Chanthaburi | Chanthaburi Province Stadium | ? | |
| Phuket | Phuket | Surakul Stadium | 15,000 | |
| Khonkaen | Khonkaen | Khon Kaen Provincial Administrative Organization Stadium | 8,500 | |
| Krabi | Krabi | Krabi Province Stadium | 6,000 | |
| Nakhon Ratchasima | Nakhon Ratchasima | 80th Birthday Stadium | 20,141 | |
| Phattalung | Phattalung | Phattalung Province Stadium | ? | |
| PTT Rayong | Rayong | PTT Stadium | 17,000 | |
| Raj Pracha | Nakhon Pathom | Mahidol University Salaya Campus Stadium | 1,000 | |
| J.W. Rangsit | Pathum Thani | Chaloem Phra Kiat Stadium | 5,000 | |
| Ratchaburi | Ratchaburi | Ratchaburi Province Stadium | 10,373 | |
| Saraburi | Saraburi | Saraburi Stadium | 10,000 | |
| Siam Navy | Chonburi | Sattahip Navy Stadium | 12,500 | |
| Songkhla | Songkhla | Tinasulanon Stadium | 35,000 | |
| Sriracha | Chonburi | Suzuki Stadium | 10,207 | |
| Suphanburi | Suphanburi | Suphanburi Province Stadium | 7,122 |
Foreign players
League table
Results
Season statistics
Top scorers
| Rank | Player | Club | Goals |
 | Bangkok | ||
 Kouassi Yao Hermann | Air Force United | ||
 Douglas | Ratchaburi | ||
 Anuwat Nakkaseam | Sriracha | ||
 Romain Gasmi | Bangkok United | ||
| Pipat Thonkanya | Suphanburi | ||
| Promphong Kransumrong | Nakhon Ratchasima | ||
| Suphakorn Naknoi | Saraburi | ||
 Raúl Goález Gastón | Sriracha | ||
| Sompong Soleb | Bangkok United |