Japan Women's Open: women's singles champions
Leylah Fernandez won the 2025 title, beating Tereza Valentova 6-0 5-7 6-3 in the final. Our archive has 20 editions since 1970; Samantha Stosur has won it most often, 3 times.
Most titles
- Samantha Stosur32009, 2013, 2014
- Maria Sharapova22003, 2004
- Marion Bartoli22006, 2011
Titles by country
Youngest and oldest champions
- Youngest
- Maria Sharapova, 16 in 2003
- Oldest
- Tamarine Tanasugarn, 33 in 2010
Age when the tournament began.
Every final
| Year | Champion | Runner-up | Score | |
|---|---|---|---|---|
| 2025 | Leylah Fernandez | Tereza Valentova | 6-0 5-7 6-3 | Draw |
| 2024 | Suzan Lamens | Kimberly Birrell | 6-0 6-4 | Draw |
| 2023 | Ashlyn Krueger | Lin Zhu | 6-3 7-6(6) | Draw |
| 2014 | Samantha Stosur | Zarina Diyas | 7-6(7) 6-3 | Draw |
| 2013 | Samantha Stosur | Eugenie Bouchard | 3-6 7-5 6-2 | Draw |
| 2012 | Heather Watson | Kai Chen Chang | 7-5 5-7 7-6(4) | Draw |
| 2011 | Marion Bartoli | Samantha Stosur | 6-3 6-1 | Draw |
| 2010 | Tamarine Tanasugarn | Kimiko Date Krumm | 7-5 6-7(4) 6-1 | Draw |
| 2009 | Samantha Stosur | Francesca Schiavone | 7-5 6-1 | Draw |
| 2008 | Caroline Wozniacki | Kaia Kanepi | 6-2 3-6 6-1 | Draw |
| 2007 | Virginie Razzano | Venus Williams | 4-6 7-6(7) 6-4 | Draw |
| 2006 | Marion Bartoli | Aiko Nakamura | 2-6 6-2 6-2 | Draw |
| 2005 | Nicole Vaidisova | Tatiana Golovin | 7-6(4) 3-2 RET | Draw |
| 2004 | Maria Sharapova | Mashona Washington | 6-0 6-1 | Draw |
| 2003 | Maria Sharapova | Aniko Kapros | 2-6 6-2 7-6(5) | Draw |
| 2002 | Jill Craybas | Silvija Talaja | 2-6 6-4 6-4 | Draw |
| 2001 | Monica Seles | Tamarine Tanasugarn | 6-3 6-2 | Draw |
| 2000 | Julie Halard Decugis | Amy Frazier | 5-7 7-5 6-4 | Draw |
| 1992 | Helena Sukova | Laura Arraya | 6-2 4-6 6-1 | Draw |
| 1970 | Kazuko Sawamatsu | Kathleen Harter | 6-3 7-5 | Draw |
Finals of the tour-level event in our match archive, matched by tournament across name changes. Every champion is checked against an independent record; a year where the two disagree is left out until it is resolved, and a missing year means the event was not held or is not in the archive.