2018 Busan Open
| 2018 Busan Open | |
|---|---|
| Date | 14–20 May |
| Edition | 17th |
| Draw | 32S / 16D |
| Surface | Hard |
| Location | Busan, South Korea |
| Champions | |
| Singles | |
 Matthew Ebden | |
| Doubles | |
 Hsieh Cheng-peng /  Christopher Rungkat | |
The 2018 Busan Open was a professional tennis tournament played on hard courts. It was the seventeenth edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Busan, South Korea between 14 and 20 May 2018.
Singles main-draw entrants
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| AUS
|
Matthew Ebden | 83 | 1 |
 IND
|
Yuki Bhambri | 86 | 2 |
 CAN
|
Vasek Pospisil | 88 | 3 |
 ISR
|
Dudi Sela | 97 | 4 |
| TPE
|
Lu Yen-hsun | 111 | 5 |
 USA
|
Mackenzie McDonald | 114 | 6 |
 JPN
|
Go Soeda | 149 | 7 |
| TPE
|
Jason Jung | 154 | 8 |
* 1 Rankings as of May 7, 2018.
Other entrants
The following players received wildcards into the singles main draw:
Hong Seong-chan- Kim Young-seok
- Na Jung-woong
- Oh Chan-yeong
The following player received entry into the singles main draw as a special exempt:
The following players received entry from the qualifying draw:
Champions
Singles
- Matthew Ebden def. Vasek Pospisil 7–6(7–4), 6–1.
Doubles
- Hsieh Cheng-peng / Christopher Rungkat def.
Ruan Roelofse / John-Patrick Smith 6–4, 6–3.