Managerial Changes
| Team | Outgoing manager | Manner of departure | Replaced by | Date of appointment | Position in table |
|---|---|---|---|---|---|
| Chonburi | Jadet Meelarp | End of Contract | Kiatisuk Senamuang | January 2009 | Pre season |
| Chula United | Kiatisuk Senamuang | End of Contract | Carlos Ferreira | January 2009 | Pre season |
| TTM Samut Sakhon | Prajuk Viengsong | End of Contract | Attaphol Puspakom | January 2009 | Pre season |
| Muang Thong United | Surasak Tansurat | Taking charge of clubs junior sides | Attaphol Puspakom | April 2009 | 4th |
| TTM Samut Sakhon | Attaphol Puspakom | Moved to Muang Thong United | Kij Meesrisuk | April 2009 | 11th |
| PEA FC | Prapol Pongpanich | Resigned due to fan pressure | Thongsuk Sampahungsith | May 2009 | 12th |
| Bangkok Glass FC | Hans R. Emser | Was acting coach and is now Technical Director Youth Football Academy Bangkok Glass FC | Surachai Jaturapattarapong | June 2009 | 1st |
| Pattaya United | Pansak Ketwattha | Resigned | Wisoon Wichaya | June 2009 | 13th |
| BEC Tero | Christophe Larrouilh | Resigned to become the team’s Technical Director | Tawan Sripan | June 2009 | 5th |
| Pattaya United | Wisoon Wichaya | Short term replacement | Jadet Meelarp | June 2009 | 13th |
| Chula United | Carlos Ferreira | Resigned | Pichai Pituwong | August 2009 | 16th |
| TTM Samut Sakhon | Kij Meesrisuk | Release | Prajuk Viengsong | August 2009 | 12th |
| Nakhon Pathom FC | Chatchai Paholpat | Release | Piyapong Piew-on | September 2009 | 14th |
Read more about this topic: 2009 Thai Premier League