# 2015 Lecoq Seoul Open – Women's singles

Misaki Doi was the defending champion, but she chose to participate at the 2015 Nürnberger Versicherungscup instead.
Riko Sawayanagi won the title, defeating Jang Su-jeong in the final, 6–4, 6–4.

## Seeds

* An-Sophie Mestach (semifinals)
* Nao Hibino (first round)
* Naomi Osaka (quarterfinals)
* Varatchaya Wongteanchai (semifinals)
* Miharu Imanishi (second round)
* Indy de Vroome (first round)
* Jang Su-jeong (final)
* Han Na-lae (quarterfinals)

## Main draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | An-Sophie Mestach | 5 | 6 | 6$^4$ | | | | |
| 7 | Jang Su-jeong | 7 | 3 | 7$^7$ | | | | |
| 7 | Jang Su-jeong | 7 | 3 | 7$^7$ | 7 | Jang Su-jeong | 4 | 4 |
| | | | | | | Riko Sawayanagi | 6 | 6 |
| 4 | Varatchaya Wongteanchai | 4 | 3 | | | Riko Sawayanagi | 6 | 6 |
| | Riko Sawayanagi | 6 | 6 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | A-S Mestach | 7 | 6 | | | | | | | | | | | | | | | | |
| | K Lykina | 5 | 3 | | 1 | A-S Mestach | 7 | 6 | | | | | | | | | | | |
| Q | Y Sema | 6 | 5 | 3 | Q | M Osaka | 5 | 3 | | | | | | | | | | | |
| Q | M Osaka | 4 | 7 | 6 | | | | | | 1 | A-S Mestach | 4 | 7 | 6 | | | | | |
| | Y-h Lee | 6 | 6 | | | | | | | | D Jakupović | 6 | 5 | 4 | | | | | |
| WC | S-j Kim | 0 | 1 | | | Y-h Lee | 1 | 3 | | | | | | | | | | | |
| | D Jakupović | 2 | 6 | 6 | | D Jakupović | 6 | 6 | | | | | | | | | | | |
| 6 | I de Vroome | 6 | 3 | 3 | | | | | | | | | | | 1 | A-S Mestach | 5 | 6 | 6$^4$ |
| 3 | N Osaka | 6 | 6 | | | | | | | | | | | | 7 | S-j Jang | 7 | 3 | 7$^7$ |
| Q | S-h Han | 1 | 0 | | 3 | N Osaka | 6 | 6 | | | | | | | | | | | |
| | A Omae | 4 | 3 | | WC | S-y Hong | 4 | 4 | | | | | | | | | | | |
| WC | S-y Hong | 6 | 6 | | | | | | | 3 | N Osaka | 6 | 6$^4$ | 2 | | | | | |
| | J-h Choi | 0 | 4 | | | | | | | 7 | S-j Jang | 3 | 7$^7$ | 6 | | | | | |
| | M Inoue | 6 | 6 | | | M Inoue | 1 | 6 | 6$^6$ | | | | | | | | | | |
| | H-h Hong | 6$^4$ | 1 | | 7 | S-j Jang | 6 | 3 | 7$^8$ | | | | | | | | | | |
| 7 | S-j Jang | 7$^7$ | 6 | | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | N-l Han | 7$^7$ | 6 | | | | | | | | | | | | | | | |
| | V Lukić | 6$^0$ | 3 | | 8 | N-l Han | 6 | 5 | 6 | | | | | | | | | |
| | E Sema | 6 | 6 | | | E Sema | 4 | 7 | 3 | | | | | | | | | |
| WC | S-r Lee | 2 | 3 | | | | | | | 8 | N-l Han | 3 | 6 | 4 | | | | |
| | Z Zlochová | 6 | 6 | | | | | | | 4 | V Wongteanchai | 6 | 2 | 6 | | | | |
| WC | Y-j Ahn | 4 | 1 | | | Z Zlochová | 1 | 1 | | | | | | | | | | |
| | E Webley-Smith | 0 | 3 | | 4 | V Wongteanchai | 6 | 6 | | | | | | | | | | |
| 4 | V Wongteanchai | 6 | 6 | | | | | | | | | | | | 4 | V Wongteanchai | 4 | 3 |
| 5 | M Imanishi | 6 | 6 | | | | | | | | | | | | | R Sawayanagi | 6 | 6 |
| | T Kinard | 3 | 4 | | 5 | M Imanishi | 2 | 5 | | | | | | | | | | |
| | K Ahn | 3 | 6 | 7$^7$ | | K Ahn | 6 | 7 | | | | | | | | | | |
| Q | S-k Kang | 6 | 3 | 6$^2$ | | | | | | | K Ahn | 6 | 6$^6$ | 3 | | | | |
| | R Sawayanagi | 6 | 6 | | | | | | | | R Sawayanagi | 1 | 7$^8$ | 6 | | | | |
| | E Yashina | 1 | 3 | | | R Sawayanagi | 6 | 6 | | | | | | | | | | |
| | Y-r Lee | 1 | 6 | 7$^7$ | | Y-r Lee | 4 | 4 | | | | | | | | | | |
| 2 | N Hibino | 6 | 2 | 6$^1$ | | | | | | | | | | | | | | |