2023 Japan Women's Open

The 2023 Japan Women's Open (also known as the Kinoshita Group Japan Open Tennis Championships for sponsorship purposes) was a women's tennis tournament played on outdoor hard courts. It was the twelfth edition of the Japan Women's Open, and part of the WTA 250 tournaments of the 2023 WTA Tour. It was held at the Utsubo Tennis Center in Osaka, Japan, from 11 to 17 September 2023. This was the first edition of the tournament since 2019, when it was held in Hiroshima. The 2020 and 2021 editions were cancelled due to the COVID-19 pandemic, while the 2022 edition was cancelled for financial reasons.

Singles

 * 🇺🇸 Ashlyn Krueger def. 🇨🇳 Zhu Lin 6–3, 7–6(8–6)

Doubles

 * 🇩🇪 Anna-Lena Friedsam / 🇺🇦 Nadiia Kichenok def. Anna Kalinskaya / 🇰🇿 Yulia Putintseva 7–6(7–3), 6–3

Seeds

 * Rankings are as of 28 August 2023

Other entrants
The following players received wildcards into the singles main draw:
 * 🇯🇵 Misaki Doi
 * 🇯🇵 Mai Hontama
 * 🇯🇵 Moyuka Uchijima

The following players received entry from the qualifying draw:
 * Alexandra Eala
 * Arianne Hartono
 * 🇺🇸 Elizabeth Mandlik
 * 🇮🇳 Ankita Raina
 * 🇯🇵 Himeno Sakatsume
 * Valeria Savinykh

Withdrawals

 * 🇩🇪 Tamara Korpatsch → replaced by Viktorija Golubic
 * 🇺🇸 Peyton Stearns → replaced by 🇺🇸 Ashlyn Krueger
 * 🇺🇦 Lesia Tsurenko → replaced by 🇭🇺 Panna Udvardy

Seeds

 * 1 Rankings are as of 28 August 2023

Other entrants
The following teams received wildcards into the doubles main draw:
 * 🇯🇵 Natsumi Kawaguchi / 🇯🇵 Momoko Kobori
 * 🇯🇵 Yuki Naito / 🇯🇵 Moyuka Uchijima