2017 Japan Women's Open
 |
| 2017 Japan Women's Open | |
|---|---|
| Date | September 11 – 17 |
| Edition | 9th |
| Category | WTA International |
| Draw | 32S / 16D |
| Prize money | $250,000 |
| Surface | Hard |
| Location | Tokyo, Japan |
| Venue | Ariake Coliseum |
| Champions | |
| Singles | |
 Zarina Diyas | |
| Doubles | |
 Shuko Aoyama /  Yang Zhaoxuan | |
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
| Event | W | F | SF | QF | Round of 16 | Round of 32 | Q | Q3 | Q2 | Q1 |
| Singles | 280 | 180 | 110 | 60 | 30 | 1 | 18 | 14 | 10 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|
| Doubles | 1 | — | — | — | — | — |
Prize money
| Event | W | F | SF | QF | Round of 16 | Round of 321 | Q | Q2 | Q1 |
| Singles | $43,000 | $21,400 | $11,300 | $5,900 | $3,310 | $2,925 | $1,005 | $730 | $530 |
| Doubles2 | $12,300 | $6,400 | $3,435 | $1,820 | $960 | — | — | — | — |
1 Qualifiers prize money is also the Round of 32 prize money
2 Per team
Singles main draw entrants
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 FRA
|
Kristina Mladenovic | 13 | 1 |
| CHN
|
Zhang Shuai | 26 | 2 |
 BEL
|
Elise Mertens | 39 | 3 |
 CZE
|
Kristýna Plíšková | 41 | 4 |
 AUS
|
Samantha Stosur | 44 | 5 |
| JPN
|
Naomi Osaka | 45 | 6 |
 USA
|
Alison Riske | 49 | 7 |
| KAZ
|
Yulia Putintseva | 50 | 8 |
- 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
| Country | Player | Country | Player | Rank1 | Seed |
|---|---|---|---|---|---|
| JPN
|
Makoto Ninomiya | CZE
|
Renata Voráčová | 70 | 1 |
| JPN
|
Eri Hozumi | JPN
|
Miyu Kato | 78 | 2 |
 UKR
|
Lyudmyla Kichenok |  SLO
|
Katarina Srebotnik | 82 | 3 |
| JPN
|
Shuko Aoyama | CHN
|
Yang Zhaoxuan | 86 | 4 |
- 1 Rankings are as of August 28, 2017
Other entrants
The following pairs received wildcards into the doubles main draw:
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]