2017 Toray Pan Pacific Open
The 2017 Toray Pan Pacific Open was a women's tennis tournament played on outdoor hard courts. It was the 34th edition of the Pan Pacific Open, and part of the Premier Series of the 2017 WTA Tour. It took place at the Ariake Coliseum in Tokyo, Japan, on 18–24 September 2017.
Singles main-draw entrants
Seeds
- Rankings are as of September 11, 2017
Other entrants
The following players received wild cards into the main singles draw:The following players received entry from the singles qualifying draw:
The following player received entry as a lucky loser:
Withdrawals
;Before the tournament- Lauren Davis → replaced by Wang Qiang
- Madison Keys → replaced by Yulia Putintseva
- Ana Konjuh → replaced by Naomi Osaka
- Petra Kvitová → replaced by Kateřina Siniaková
- Mirjana Lučić-Baroni → replaced by Catherine Bellis
- Agnieszka Radwańska → replaced by Aliaksandra Sasnovich
- Anastasija Sevastova → replaced by Daria Kasatkina
Doubles main-draw entrants
Seeds
- Rankings are as of September 11, 2017