| 2009 PTT Thailand Open | |
|---|---|
| Date | September 28 – October 4 |
| Edition | 7th |
| Champions | |
| Singles | |
 Gilles Simon | |
| Doubles | |
 Eric Butorac / Rajeev Ram | |
The 2009 PTT Thailand Open was a tennis tournament played on indoor hard courts. It was the 7th edition of the Thailand Open, and was part of the ATP World Tour 250 Series of the 2009 ATP World Tour. It was held at the Impact Arena in Bangkok, Thailand, from September 28 through October 4, 2009.