Japan Women's Open

Kinoshita Group Japan Open
Current event 2026 Japan Women's Open
WTA Tour
Founded2009
Editions15 (2026)
LocationOsaka (2009–2014, 2023-)
Tokyo (2015–2017)
Hiroshima (2018–2019)
Japan
VenueUtsubo Tennis Center (2009-2014, 2023-)
Ariake Tennis Forest Park (2015-2017)
Regional Park Tennis Stadium (2018-2019)
SurfaceHard / outdoors
Websitejapanopentennis.com/wta
Current champions (2026)
SinglesCzech Republic Kateřina Siniaková
DoublesAustralia Storm Hunter
Indonesia Janice Tjen
WTA Tour
CategoryInternational
(2009-2019)
WTA 250
(2023–current)
Draw32S / 24Q / 16D
Prize moneyUS$283,347 (2026)

The Kinoshita Group Japan Open Tennis Championships (Japanese: ジャパン女子オープンテニス), currently sponsored by the Kinoshita Group (formerly HP Open), is a professional tennis tournament played annually on outdoor hardcourts in Osaka, Japan. It is a WTA 250 event on the WTA Tour.

As successor to the Japan Open (where men and women played simultaneously, up to 2008) the event was held in women-only format for the first time in 2009, and was the second tournament of the season held in Japan: the Pan Pacific Open, a Premier 5 tournament, was held two weeks before. In 2015, the event was moved from Osaka to Tokyo and in 2018 to Hiroshima, before returning to Osaka in 2023 after a three-year hiatus.

Past finals

Singles

Location Year Champion Runner-up Score
Osaka 2026Czech Republic Kateřina SiniakováUnited States Ashlyn Krueger6–1, 6–0
2025Canada Leylah FernandezCzech Republic Tereza Valentová6–0, 5–7, 6–3
2024Netherlands Suzan LamensAustralia Kimberly Birrell6–3, 6–3
2023United States Ashlyn KruegerChina Zhu Lin6–3, 7–6(8–6)
2022 no competition (due to financial crisis)[citation needed]
2021 no competition (due to COVID-19 pandemic)
2020
Hiroshima 2019Japan Nao HibinoJapan Misaki Doi6–3, 6–2
2018Chinese Taipei Hsieh Su-weiUnited States Amanda Anisimova6–2, 6–2
Tokyo 2017Kazakhstan Zarina DiyasJapan Miyu Kato6–2, 7–5
2016United States Christina McHaleCzech Republic Kateřina Siniaková3–6, 6–4, 6–4
2015Belgium Yanina WickmayerPoland Magda Linette4–6, 6–3, 6–3
Osaka 2014Australia Samantha Stosur (3) Kazakhstan Zarina Diyas7–6(9–7), 6–3
2013Australia Samantha Stosur (2) Canada Eugenie Bouchard3–6, 7–5, 6–2
2012United Kingdom Heather WatsonChinese Taipei Chang Kai-chen7–5, 5–7, 7–6(7–4)
2011France Marion BartoliAustralia Samantha Stosur6–3, 6–1
2010Thailand Tamarine TanasugarnJapan Kimiko Date-Krumm7–5, 6–7(7–4), 6–1
2009Australia Samantha StosurItaly Francesca Schiavone7–5, 6–1

Doubles

Location Year Champions Runners-up Score
Osaka 2025France Kristina Mladenovic (2)
United States Taylor Townsend		Australia Storm Hunter
United States Desirae Krawczyk		6–4, 2–6, [10–5]
2024Japan Ena Shibahara
Germany Laura Siegemund		Spain Cristina Bucșa
Romania Monica Niculescu		3–6, 6–2, [10–2]
2023Germany Anna-Lena Friedsam
Ukraine Nadiia Kichenok		 Anna Kalinskaya
Kazakhstan Yulia Putintseva		7–6(7–3), 6–3
2022 no competition (due to financial crisis)[citation needed]
2021 no competition (due to COVID-19 pandemic)
2020
Hiroshima 2019Japan Misaki Doi
Japan Nao Hibino		United States Christina McHale
Russia Valeria Savinykh		3–6, 6–4, [10–4]
2018Japan Eri Hozumi
China Zhang Shuai (2) 		Japan Miyu Kato
Japan Makoto Ninomiya		6–2, 6–4
Tokyo 2017Japan Shuko Aoyama (3)
China Yang Zhaoxuan		Australia Monique Adamczak
Australia Storm Sanders		6–0, 2–6, [10–5]
2016Japan Shuko Aoyama (2)
Japan Makoto Ninomiya		United Kingdom Jocelyn Rae
United Kingdom Anna Smith		6–3, 6–3
2015Chinese Taipei Chan Hao-ching
Chinese Taipei Chan Yung-jan		Japan Misaki Doi
Japan Kurumi Nara		6–1, 6–2
Osaka 2014Japan Shuko Aoyama
Czech Republic Renata Voráčová		Spain Lara Arruabarrena
Germany Tatjana Maria		6–1, 6–2
2013France Kristina Mladenovic
Italy Flavia Pennetta		Australia Samantha Stosur
China Zhang Shuai		6–4, 6–3
2012United States Raquel Kops-Jones
United States Abigail Spears		Japan Kimiko Date-Krumm
United Kingdom Heather Watson		6–1, 6–4
2011Japan Kimiko Date-Krumm
China Zhang Shuai		United States Vania King
Kazakhstan Yaroslava Shvedova		7–5, 3–6, [11–9]
2010Chinese Taipei Chang Kai-chen
United States Lilia Osterloh		Japan Shuko Aoyama
Japan Rika Fujiwara		6–0, 6–3
2009Chinese Taipei Chuang Chia-jung
United States Lisa Raymond		South Africa Chanelle Scheepers
United States Abigail Spears		6–2, 6–4

See also

References

  1. ↑ Japan Open Tennis Championships
  2. ↑ "Leylah Fernandez beats Czech qualifier in Japan Open final to win 5th WTA title". CBC. Retrieved 20 October 2026.
  3. ↑ "Dutch qualifier Lamens wins Osaka Open for first WTA title, breaks world's top 100". Tennis Majors. Retrieved 20 October 2026.
  4. ↑ "Japan Open: Ashlyn Krueger hoists the title in Osaka!". Tennis World USA. Retrieved 20 October 2026.
  5. 1 2 "花キューピットオープン2020の開催中止について". Hana-cupid Japan Women’s Open（花キューピットオープン） (in Japanese). Retrieved 2022-05-22.
  6. 1 2 "花キューピットオープン2021の開催中止について". Hana-cupid Japan Women’s Open（花キューピットオープン） (in Japanese). Retrieved 2022-05-22.
  7. ↑ "Hibino tops Doi to claim Japan Women's Open". ESPN. Retrieved 20 October 2026.
  8. ↑ "Hsieh Su-Wei claims Japan Women's Open title". Jersey Evening Post. Retrieved 20 October 2026.
  9. ↑ "Zarina Diyas beats Miyu Kato to win first WTA title at Japan Open". The New Indian Express. Retrieved 20 October 2026.
  10. ↑ "Christina McHale rallies to beat Katerina Siniakova in Japan final". ESPN. Retrieved 20 October 2026.
  11. ↑ "Yanina Wickmayer wins the Japan Women's Open". RTE. Retrieved 20 October 2026.
  12. ↑ "Stosur wins Japan Open for third time". SBS News. Retrieved 20 October 2026.
  13. ↑ "Samantha Stosur wins Japan Open after three-set win over Eugenie Bouchard". Australian Broadcasting Corporation. Retrieved 20 October 2026.
  14. ↑ "Heather Watson wins Japan Open to end GB's long wait for women's title". The Guardian. Retrieved 20 October 2026.
  15. ↑ "Bartoli wins in Japan". Sky Sports. Retrieved 20 October 2026.
  16. ↑ "Tanasugarn takes WTA Osaka tournament". UPI. Retrieved 20 October 2026.
  17. ↑ "Japan Open: Stosur wins first WTA title". Sportsnet. Retrieved 20 October 2026.
  18. ↑ "I can't believe it": Mladenovic claims 29th doubles title after seven months of hell". Tennis Temple. Retrieved 20 October 2026.
  19. ↑ "Lamens wins all-qualifier final in Osaka to capture first WTA title". Women's Tennis Association. Retrieved 20 October 2026.
  20. ↑ "Ukrainian tennis player won the tournament in Japan, defeating the Russian champion in the finals". obozrevatel.com. Retrieved 20 October 2026.
  21. ↑ "Hibino beats doubles partner Doi to clinch Hiroshima title". Reuters. Retrieved 20 October 2026.