2018 OEC Kaohsiung
 |
| 2018 OEC Kaohsiung | |
|---|---|
| Date | 17 – 23 September |
| Edition | 7th |
| Surface | Hard |
| Location | Kaohsiung, Taiwan |
| Champions | |
| Singles | |
 Gaël Monfils | |
| Doubles | |
 Hsieh Cheng-peng / Yang Tsung-hua | |
The 2018 OEC Kaohsiung was a professional tennis tournament played on hard courts. It was the seventh edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Kaohsiung, Taiwan between 17 and 23 September 2018.
Singles main draw entrants
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| FRA
|
Gaël Monfils | 42 | 1 |
 TUN
|
Malek Jaziri | 63 | 2 |
 AUS
|
Jason Kubler | 92 | 3 |
| TPE
|
Jason Jung | 121 | 4 |
 RSA
|
Lloyd Harris | 131 | 5 |
 IND
|
Ramkumar Ramanathan | 135 | 6 |
 LAT
|
Ernests Gulbis | 146 | 7 |
| IND
|
Prajnesh Gunneswaran | 162 | 8 |
- 1 Rankings are as of 10 September 2018.
Other Entrants
The following players received wildcards into the singles main draw:
The following players received entry into the singles main draw as special exempts:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Champions
Singles
Gaël Monfils def. 
Kwon Soon-woo 6–4, 2–6, 6–1.
Doubles
Hsieh Cheng-peng / Yang Tsung-hua def. Hsu Yu-hsiou / Jimmy Wang 6–7(3–7), 6–2, [10–8].