2023 Toray Pan Pacific Open

The 2023 Toray Pan Pacific Open was a professional women's tennis tournament played on outdoor hard courts. It was the 38th edition of the Pan Pacific Open, and part of the WTA 500 tournaments of the 2023 WTA Tour. It took place at the Ariake Coliseum in Tokyo, Japan from 25 September to 1 October 2023.

Singles

 * Veronika Kudermetova def. 🇺🇸 Jessica Pegula, 7–5, 6–1

Doubles

 * 🇳🇴 Ulrikke Eikeri / 🇪🇪 Ingrid Neel def. 🇯🇵 Eri Hozumi / 🇯🇵 Makoto Ninomiya 3–6, 7–5, [10–5]

Seeds

 * Rankings are as of 18 September 2023

Other entrants
The following players received wild cards into the main singles draw:
 * Anna Kalinskaya
 * 🇯🇵 Moyuka Uchijima

The following players received entry from the singles qualifying draw:
 * 🇬🇧 Harriet Dart
 * 🇯🇵 Misaki Doi
 * 🇯🇵 Mai Hontama
 * 🇯🇵 Natsumi Kawaguchi
 * Despina Papamichail
 * 🇯🇵 Rina Saigo

The following players received entry as lucky losers:
 * 🇯🇵 Sakura Hosogi
 * 🇯🇵 Himeno Sakatsume

Withdrawals

 * Belinda Bencic → replaced by 🇩🇪 Tatjana Maria
 * 🇯🇵 Natsumi Kawaguchi → replaced by 🇯🇵 Sakura Hosogi
 * 🇨🇿 Barbora Krejčíková → replaced by 🇪🇸 Cristina Bucșa
 * 🇵🇱 Magda Linette → replaced by Petra Martić
 * 🇨🇿 Karolína Muchová → replaced by 🇺🇦 Anhelina Kalinina
 * 🇨🇿 Karolína Plíšková → replaced by 🇺🇦 Marta Kostyuk
 * 🇰🇿 Elena Rybakina → replaced by 🇯🇵 Himeno Sakatsume
 * 🇨🇿 Markéta Vondroušová → replaced by 🇨🇿 Linda Nosková

Seeds

 * Rankings are as of 18 September 2023

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇯🇵 Mai Hontama / 🇯🇵 Moyuka Uchijima
 * 🇯🇵 Natsumi Kawaguchi / 🇯🇵 Yuki Naito