2016 Toray Pan Pacific Open

The 2016 Toray Pan Pacific Open was a women's tennis tournament played on outdoor hard courts. It was the 33rd edition of the Pan Pacific Open, and part of the Premier Series of the 2016 WTA Tour. It took place at the Ariake Coliseum in Tokyo, Japan, on 19–25 September 2016. Caroline Wozniacki won the singles title.

Seeds

 * Rankings are as of September 12, 2016

Other entrants
The following players received wild cards into the main singles draw:
 * 🇺🇸 Madison Keys
 * 🇨🇿 Petra Kvitová
 * 🇯🇵 Naomi Osaka
 * 🇷🇺 Olesya Pervushina

The following players received entry from the singles qualifying draw:
 * 🇺🇦 Kateryna Bondarenko
 * 🇵🇱 Magda Linette
 * 🇧🇾 Aliaksandra Sasnovich
 * 🇹🇭 Varatchaya Wongteanchai

Withdrawals

 * Before the tournament
 * 🇷🇴 Simona Halep → replaced by Caroline Wozniacki
 * 🇦🇺 Samantha Stosur → replaced by 🇺🇸 Madison Brengle
 * 🇺🇸 Sloane Stephens → replaced by Anastasija Sevastova
 * 🇦🇺 Daria Gavrilova → replaced by 🇺🇸 Varvara Lepchenko

Seeds

 * Rankings are as of September 12, 2016

Other entrants
The following pairs received entry as alternates:
 * 🇺🇸 Madison Brengle / 🇯🇵 Kanae Hisami
 * Lee Ya-hsuan / 🇯🇵 Kotomi Takahata

Withdrawals

 * Before the tournament
 * 🇩🇪 Andrea Petkovic (lower back injury)
 * 🇨🇿 Lucie Šafářová (right abdominal injury)

Singles

 * Caroline Wozniacki def. 🇯🇵 Naomi Osaka, 7–5, 6–3

Doubles

 * 🇮🇳 Sania Mirza / 🇨🇿 Barbora Strýcová def. 🇨🇳 Liang Chen / 🇨🇳 Yang Zhaoxuan, 6–1, 6–1