The 2011 Chang-Sat Bangkok Open was a professional tennis tournament played on hard courts. It was the third edition of the tournament which was part of the 2011 ATP Challenger Tour. It took place in Bangkok, Thailand between 29 August and 4 September 2011.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Rik de Voest | 123 | 1 | ||
| Rainer Schüttler | 124 | 2 | ||
 Russian Federation | Teymuraz Gabashvili | 129 | 3 | |
 United Kingdom | James Ward | 139 | 4 | |
| Cedrik-Marcel Stebe | 152 | 5 | ||
| Russian Federation | Konstantin Kravchuk | 159 | 6 | |
 Japan | Yūichi Sugita | 174 | 7 | |
 Israel | Amir Weintraub | 196 | 8 |
The following players received wildcards into the singles main draw:
Kong Pop Lertchai Kirati Siributwong Peerakiat Siriluethaiwattana Kittipong WachiramanowongThe following players received entry from the qualifying draw:
See main article: 2011 Chang-Sat Bangkok Open – Singles. Cedrik-Marcel Stebe def. Amir Weintraub, 7–5, 6–1
See main article: 2011 Chang-Sat Bangkok Open – Doubles. 
Pierre-Ludovic Duclos / 
Riccardo Ghedin def. 
Nicholas Monroe / 
Ludovic Walter, 6–4, 6–4
