| Singles | |
|---|---|
| 2017 Seoul Open Challenger | |
| Champion |
|
| Runner-up |
|
| Final score | 1–6, 6–4, 6–3 |
Sergiy Stakhovsky was the defending champion but chose not to defend his title.
Thomas Fabbiano won the title after defeating Kwon Soon-woo 1–6, 6–4, 6–3 in the final.