2017 Japan Women's Open
The 2017 Japan Women's Open was a women's tennis tournament played on outdoor hard courts. It was the ninth edition of the Japan Women's Open, and part of the WTA International tournaments of the 2017 WTA Tour. It was held at the Ariake Coliseum in Tokyo, Japan, from September 11 through September 17, 2017. Unseeded Zarina Diyas, who qualified for the main draw, won the singles title.
Finals
Singles
- Zarina Diyas defeated Miyu Kato, 6–2, 7–5
Doubles
- Shuko Aoyama / Yang Zhaoxuan defeated Monique Adamczak / Storm Sanders, 6–0, 2–6,
Points and prize money
Prize money
1 Qualifiers prize money is also the Round of 32 prize moneySingles main-draw entrants
Seeds
- Rankings are as of August 28, 2017
Other entrants
The following players received wildcards into the singles main draw:The following player received entry using a protected ranking:
The following players received entry from the qualifying draw:
Withdrawals
;Before the tournament- Lauren Davis → replaced by Jana Čepelová
- Magdaléna Rybáriková → replaced by Sara Sorribes Tormo
- Kateřina Siniaková → replaced by Kurumi Nara
- Natalia Vikhlyantseva → replaced by Richèl Hogenkamp
- Donna Vekić → replaced by Han Xinyun
- Markéta Vondroušová → replaced by Aliaksandra Sasnovich
- Zheng Saisai → replaced by Hsieh Su-wei
Doubles main-draw entrants
Seeds
- 1 Rankings are as of August 28, 2017