# 2024 Japan Women's Open – Singles

Suzan Lamens defeated Kimberly Birrell in the final, 6–0, 6–4 to win the singles title at the 2024 Japan Women's Open. It was her first WTA Tour title. This was the first WTA Tour final since the 2022 Copa Colsanitas and fifth in the tour's history to be contested by two qualifiers.
Ashlyn Krueger was the defending champion, but lost in the first round to Elina Avanesyan.

## Seeds

* Magdalena Fręch (withdrew)
* Leylah Fernandez (withdrew)
* Elise Mertens (second round, retired)
* Marie Bouzková (second round)
* Elina Avanesyan (second round)
* Viktoriya Tomova (first round)
* Diane Parry (semifinals)
* Elisabetta Cocciaretto (second round)

## 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 | Final | Final | Final | Final |
| Q | Aoi Ito | 4 | 3 | | | | |
| Q | Kimberly Birrell | 6 | 6 | | | | |
| Q | Kimberly Birrell | 6 | 6 | Q | Kimberly Birrell | 0 | 4 |
| | | | | Q | Suzan Lamens | 6 | 6 |
| Q | Suzan Lamens | 6 | 6 | Q | Suzan Lamens | 6 | 6 |
| 7 | Diane Parry | 2 | 4 | | | | |

### 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 |
| LL | E Lys | 6 | 6 | | | | | | | | | | | | | | | |
| | C Osorio | 2 | 3 | | LL | E Lys | 7$^9$ | 3 | 7 | | | | | | | | | |
| | M Kessler | 6 | 6 | | | M Kessler | 6$^7$ | 6 | 5 | | | | | | | | | |
| Q | E Shibahara | 4 | 1 | | | | | | | LL | E Lys | 7$^{10}$ | 2 | 3 | | | | |
| WC | S Kenin | 2 | 6 | 5 | | | | | | Q | A Ito | 6$^8$ | 6 | 6 | | | | |
| Q | A Ito | 6 | 3 | 7 | Q | A Ito | 6 | 6 | | | | | | | | | | |
| LL | J Ponchet | 4 | 7 | 6$^3$ | 8 | E Cocciaretto | 4 | 3 | | | | | | | | | | |
| 8 | E Cocciaretto | 6 | 5 | 7$^7$ | | | | | | | | | | | Q | A Ito | 4 | 3 |
| 3 | E Mertens | 6 | 6 | | | | | | | | | | | | Q | K Birrell | 6 | 6 |
| WC | M Hontama | 1 | 1 | | 3 | E Mertens | 6 | 5 | 1$^r$ | | | | | | | | | |
| Q | K Birrell | 6 | 6 | | Q | K Birrell | 3 | 7 | 4 | | | | | | | | | |
| PR | S Zheng | 2 | 3 | | | | | | | Q | K Birrell | 7 | 6 | | | | | |
| | J Bouzas Maneiro | 3 | 2 | | | | | | | WC | S Saito | 5 | 4 | | | | | |
| WC | S Saito | 6 | 6 | | WC | S Saito | 7$^7$ | 6 | | | | | | | | | | |
| | A Krueger | 6$^1$ | 3 | | 5 | E Avanesyan | 6$^2$ | 4 | | | | | | | | | | |
| 5 | E Avanesyan | 7$^7$ | 6 | | | | | | | | | | | | | | | |

### Bottom half

| First round | 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 |
| 6 | V Tomova | 1 | 2 | | | | | | | | | | | | | | |
| Q | S Lamens | 6 | 6 | | Q | S Lamens | 6 | 6 | | | | | | | | | |
| | L Bronzetti | 6 | 6 | | | L Bronzetti | 3 | 4 | | | | | | | | | |
| | C Bucșa | 3 | 4 | | | | | | Q | S Lamens | 4 | 6 | 6 | | | | |
| Q | A Bogdan | 6 | 6 | | | | | | Q | A Bogdan | 6 | 3 | 3 | | | | |
| | V Kudermetova | 2 | 2 | | Q | A Bogdan | 6 | 7$^7$ | | | | | | | | | |
| | M Uchijima | 6$^6$ | 6 | 3 | 4 | M Bouzková | 0 | 6$^5$ | | | | | | | | | |
| 4 | M Bouzková | 7$^8$ | 2 | 6 | | | | | | | | | | Q | S Lamens | 6 | 6 |
| 7 | D Parry | 4 | 7$^7$ | 6 | | | | | | | | | | 7 | D Parry | 2 | 4 |
| | E Andreeva | 6 | 6$^4$ | 1 | 7 | D Parry | 6 | 6 | | | | | | | | | |
| WC | B Andreescu | 3 | 0 | | | G Minnen | 4 | 2 | | | | | | | | | |
| | G Minnen | 6 | 6 | | | | | | 7 | D Parry | 6 | 1 | 6 | | | | |
| Q | L Siegemund | 6 | 5 | 5 | | | | | | C Tauson | 3 | 6 | 3 | | | | |
| | H Dart | 3 | 7 | 7 | | H Dart | 3 | 2 | | | | | | | | | |
| | C Tauson | 6 | 6 | | | C Tauson | 6 | 6 | | | | | | | | | |
| | K Volynets | 1 | 4 | | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Laura Siegemund (qualified)
* Eva Lys (qualifying competition, lucky loser)
* Jessika Ponchet (qualifying competition, lucky loser)
* Emina Bektas (first round)
* Jana Fett (first round)
* Ana Bogdan (qualified)
* Alycia Parks (first round)
* Suzan Lamens (qualified)
* Kimberly Birrell (qualified)
* Nao Hibino (qualifying competition)
* Ena Shibahara (qualified)
* Arianne Hartono (qualifying competition)

### Qualifiers

* Laura Siegemund
* Suzan Lamens
* Kimberly Birrell
* Aoi Ito
* Ena Shibahara
* Ana Bogdan

### Lucky losers

* Jessika Ponchet
* Eva Lys

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Laura Siegemund | 7 | 6 | | | | | |
| WC | Rina Saigo | 5 | 2 | | | | | |
| WC | Rina Saigo | 5 | 2 | | 1 | Laura Siegemund | 6 | 6 |
| | | | | | 10 | Nao Hibino | 1 | 4 |
| | Mananchaya Sawangkaew | 6 | 5 | 3 | 10 | Nao Hibino | 1 | 4 |
| 10 | Nao Hibino | 3 | 7 | 6 | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Eva Lys | 6 | 6 | | | | |
| WC | Himeno Sakatsume | 2 | 2 | | | | |
| WC | Himeno Sakatsume | 2 | 2 | 2 | Eva Lys | 5 | 3 |
| | | | | 8 | Suzan Lamens | 7 | 6 |
| WC | Ena Koike | 6$^6$ | 1 | 8 | Suzan Lamens | 7 | 6 |
| 8 | Suzan Lamens | 7$^8$ | 6 | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Jessika Ponchet | 6 | 6 | | | | | | |
| PR | Wang Qiang | 3 | 3 | | | | | | |
| PR | Wang Qiang | 3 | 3 | | 3 | Jessika Ponchet | 5 | 6 | 2 |
| | | | | | 9 | Kimberly Birrell | 7 | 3 | 6 |
| | Sayaka Ishii | 2 | 6 | 3 | 9 | Kimberly Birrell | 7 | 3 | 6 |
| 9 | Kimberly Birrell | 6 | 3 | 6 | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Emina Bektas | 3 | 4 | | | | | | |
| | Aoi Ito | 6 | 6 | | | | | | |
| | Aoi Ito | 6 | 6 | | | Aoi Ito | 3 | 6 | 6 |
| | | | | | 12 | Arianne Hartono | 6 | 3 | 4 |
| | Zeynep Sönmez | 6$^3$ | 6 | 4 | 12 | Arianne Hartono | 6 | 3 | 4 |
| 12 | Arianne Hartono | 7$^7$ | 1 | 6 | | | | | |

#### Fifth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 5 | Jana Fett | 6$^3$ | 2 | | | | | | |
| | Marina Stakusic | 7$^7$ | 6 | | | | | | |
| | Marina Stakusic | 7$^7$ | 6 | | | Marina Stakusic | 6 | 6$^2$ | 6$^7$ |
| | | | | | 11 | Ena Shibahara | 2 | 7$^7$ | 7$^9$ |
| | Linda Fruhvirtová | 6 | 6$^4$ | 5 | 11 | Ena Shibahara | 2 | 7$^7$ | 7$^9$ |
| 11 | Ena Shibahara | 3 | 7$^7$ | 7 | | | | | |

#### Sixth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 6 | Ana Bogdan | 6 | 6 | | | | | |
| Alt | Aleksandra Krunić | 1 | 2 | | | | | |
| Alt | Aleksandra Krunić | 1 | 2 | | 6 | Ana Bogdan | 6 | 6 |
| | | | | | WC | Naho Sato | 3 | 3 |
| WC | Naho Sato | 4 | 6 | 6 | WC | Naho Sato | 3 | 3 |
| 7 | Alycia Parks | 6 | 4 | 2 | | | | |