The 2009 Busan Open Challenger Tennis was a professional tennis tournament played on outdoor hard courts. It is part of the 2009 ATP Challenger Tour. It took place in Busan, South Korea between May 11 and May 17, 2009.
| Nationality | Player | Ranking* | Seeding | |
|---|---|---|---|---|
 Japan | Go Soeda | 132 | 1 | |
 Thailand | Danai Udomchoke | 144 | 2 | |
| Florian Mayer | 214 | 3 | ||
 Korea, Republic of | Im Kyu-tae | 219 | 4 | |
| Kristian Pless | 230 | 5 | ||
| Marco Chiudinelli | 243 | 6 | ||
 Australia | Samuel Groth | 252 | 7 | |
| Blaž Kavčič | 267 | 8 |
The following players received wildcards into the singles main draw:
An Jae-sung Lim Yong-kyu Jeong Suk-young Seo Yong-bumThe following players received entry from the qualifying draw:
See main article: 2009 Busan Open Challenger Tennis – Singles. Danai Udomchoke def. Blaž Kavčič, 6–2, 6–2
See main article: 2009 Busan Open Challenger Tennis – Doubles. Sanchai Ratiwatana / Sonchat Ratiwatana def. Tasuku Iwami / Toshihide Matsui, 6–4, 6–2