| Singles | |
|---|---|
| 2017 Gimcheon Open ATP Challenger | |
| Champion |
|
| Runner-up |
|
| Final score | 7–5, 6–1 |
Max Purcell was the defending champion but lost to Bradley Mousley in the second qualifying round.
Thomas Fabbiano won the title after defeating Teymuraz Gabashvili 7–5, 6–1 in the final.