# 2023 Fukuoka International Women's Cup – Singles

Heather Watson was the defending champion but chose not to participate.
Natsumi Kawaguchi won the title after Katie Boulter withdrew before the final.

## Seeds

* Katie Boulter (final)
* Carol Zhao (semifinals)
* Sakura Hosogi (second round)
* Emina Bektas (semifinals)
* Lizette Cabrera (quarterfinals)
* Lina Glushko (first round)
* Haruka Kaji (first round)
* Liang En-shuo (quarterfinals)

## 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 |
| 1 | Katie Boulter | 2 | 6 | 7$^7$ | | | |
| 4 | Emina Bektas | 6 | 4 | 6$^5$ | | | |
| 4 | Emina Bektas | 6 | 4 | 6$^5$ | 1 | Katie Boulter | |
| | | | | | Q | Natsumi Kawaguchi | w/o |
| Q | Natsumi Kawaguchi | 6 | 7$^8$ | | Q | Natsumi Kawaguchi | w/o |
| 2 | Carol Zhao | 1 | 6$^6$ | | | | |

### Top half

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | K Boulter | 6 | 6 | | | | | | | | | | | | | | |
| Q | M Yamaguchi | 4 | 1 | 1 | K Boulter | 6 | 6 | | | | | | | | | | |
| Q | M Ozeki | 4 | 3 | | E Shimizu | 1 | 0 | | | | | | | | | | |
| | E Shimizu | 6 | 6 | | | | | 1 | K Boulter | 6 | 4 | 7$^7$ | | | | | |
| | S Imamura | 6 | 6 | | | | | 8 | E-s Liang | 3 | 6 | 6$^5$ | | | | | |
| Q | Y Hosoki | 0 | 1 | | S Imamura | 1 | 2 | | | | | | | | | | |
| | M Kobori | 1 | 0 | 8 | E-s Liang | 6 | 6 | | | | | | | | | | |
| 8 | E-s Liang | 6 | 6 | | | | | | | | | | 1 | K Boulter | 2 | 6 | 7$^7$ |
| 4 | E Bektas | 6 | 6 | | | | | | | | | | 4 | E Bektas | 6 | 4 | 6$^5$ |
| SR | A Shimizu | 3 | 2 | 4 | E Bektas | 6 | 6 | | | | | | | | | | |
| Q | J Namigata | 6 | 6 | Q | J Namigata | 1 | 1 | | | | | | | | | | |
| WC | R Matsuda | 1 | 2 | | | | | 4 | E Bektas | 6 | 6 | | | | | | |
| Q | T Kinard | 0 | 0$^r$ | | | | | 5 | L Cabrera | 2 | 2 | | | | | | |
| | R Saigo | 6 | 1 | | R Saigo | 6$^3$ | 2 | | | | | | | | | | |
| | Y Wang | 0 | 4 | 5 | L Cabrera | 7$^7$ | 6 | | | | | | | | | | |
| 5 | L Cabrera | 6 | 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 |
| 7 | H Kaji | 5 | 6$^0$ | | | | | | | | | | | | | | | |
| Q | S Saito | 7 | 7$^7$ | | Q | S Saito | 6 | 6 | | | | | | | | | | |
| | N Hanatani | 3 | 2 | | | P-c Lee | 0 | 3 | | | | | | | | | | |
| | P-c Lee | 6 | 6 | | | | | | | Q | S Saito | 6 | 6$^4$ | 6$^4$ | | | | |
| Q | A Ito | 4 | 5 | | | | | | | Q | N Kawaguchi | 1 | 7$^7$ | 7$^7$ | | | | |
| Q | N Kawaguchi | 6 | 7 | | Q | N Kawaguchi | 6 | 6 | | | | | | | | | | |
| | T Gibson | 4 | 6 | 0 | 3 | S Hosogi | 1 | 4 | | | | | | | | | | |
| 3 | S Hosogi | 6 | 1 | 6 | | | | | | | | | | | Q | N Kawaguchi | 6 | 7$^8$ |
| 6 | L Glushko | 4 | 2 | | | | | | | | | | | | 2 | C Zhao | 1 | 6$^6$ |
| | A Parnaby | 6 | 6 | | | A Parnaby | 5 | 6$^2$ | | | | | | | | | | |
| WC | L-M Rioux | 0 | 6 | 4 | | Y Ma | 7 | 7$^7$ | | | | | | | | | | |
| | Y Ma | 6 | 0 | 6 | | | | | | | Y Ma | 4 | 2 | | | | | |
| WC | A Yamaguchi | 0 | 2 | | | | | | | 2 | C Zhao | 6 | 6 | | | | | |
| | E Sema | 6 | 6 | | | E Sema | 2 | 7 | 3 | | | | | | | | | |
| WC | A Nagata | 2 | 1 | | 2 | C Zhao | 6 | 5 | 6 | | | | | | | | | |
| 2 | C Zhao | 6 | 6 | | | | | | | | | | | | | | | |