The 2009 SAT Bangkok Open was a professional tennis tournament played on indoor hard courts. It was part of the 2009 ATP Challenger Tour. It took place in Bangkok, Thailand between 16 and 22 March 2009.
| Nationality | Player | Ranking* | Seeding | |
|---|---|---|---|---|
| Andreas Beck | 86 | 1 | ||
 Korea, Republic of | Lee Hyung-taik | 110 | 2 | |
 Japan | Go Soeda | 117 | 3 | |
 Australia | Chris Guccione | 134 | 4 | |
 France | Mathieu Montcourt | 136 | 5 | |
 Russian Federation | Mikhail Elgin | 138 | 6 | |
| Daniel Brands | 148 | 7 | ||
 India | Somdev Devvarman | 150 | 8 |
The following players received wildcards into the singles main draw:
Guillermo Coria
Peerakit Siributwong Kittipong WachiramanowongThe following players received entry from the qualifying draw:
The following player received special exempt into the main draw:
See main article: 2009 SAT Bangkok Open – Singles. Florian Mayer def. Danai Udomchoke, 7–5, 6–2
See main article: 2009 SAT Bangkok Open – Doubles. 
Joshua Goodall / Joseph Sirianni def. Mikhail Elgin / Alexander Kudryavtsev, 6–3, 6–1
