The 2017 Japan Women's Open (also known as the 2017 Hashimoto Sogyo Japan Women's Open for sponsorship reasons) 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.
Point distribution
Prize money
1 Qualifiers prize money is also the Round of 32 prize money
2 Per team
Singles main-draw entrants
Seeds
Rankings are as of August 28, 2017
Other entrants
The following players received wildcards into the singles main draw: Kimiko Date Kristina Mladenovic Kristýna Plíšková
The following player received entry using a protected ranking: Misa Eguchi
The following players received entry from the qualifying draw: Zarina Diyas Jana Fett Miyu Kato Danka Kovinić
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
Other entrants
The following pairs received wildcards into the doubles main draw: Chuang Chia-jung / Misaki Doi Erina Hayashi / Momoko Kobori
Champions
Singles
Zarina Diyas def. Miyu Kato, 6–2, 7–5
Doubles
Shuko Aoyama / Yang Zhaoxuan def. Monique Adamczak / Storm Sanders, 6–0, 2–6, [10–5]