| Date: | 31 August – 6 September |
| Edition: | 7th |
| Surface: | Hard |
| Location: | Bangkok, Thailand |
| Champs: |  Yūichi Sugita |
| Champd: |  Bai Yan /  Riccardo Ghedin |
| After Name: | KPN Bangkok Open |
The 2015 Chang-Sat Bangkok Open was a professional tennis tournament played on hard courts. It was the seventh edition of the tournament which was part of the 2015 ATP Challenger Tour. It took place in Bangkok, Thailand between 31 August and 6 September 2015.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Japan | Tatsuma Ito | 93 | 1 | |
 India | Somdev Devvarman | 152 | 2 | |
| Japan | Yūichi Sugita | 156 | 3 | |
 Belgium | Niels Desein | 177 | 4 | |
 Australia | Jordan Thompson | 193 | 5 | |
| Chen Ti | 194 | 6 | ||
| Alexander Sarkissian | 207 | 7 | ||
| Japan | Yasutaka Uchiyama | 213 | 8 |
The following players received wildcards into the singles main draw:
Phassawit Burapharitta Puriwat Chatpatcharoen Pruchya Isaro Kittipong WachiramanowongThe following players received entry from the qualifying draw:
See main article: 2015 Chang-Sat Bangkok Open – Singles.
Yūichi Sugita def. 
Marco Trungelliti 6–4, 6–2See main article: 2015 Chang-Sat Bangkok Open – Doubles.
Bai Yan / Riccardo Ghedin def. Chen Ti / Li Zhe 6–2, 7–5