2023-10-16 Tokyo

The 2023 Japan Open Tennis Championships (known as Kinoshita Group Japan Open Tennis Championships for sponsorship reasons) was a men's tennis tournament played on outdoor hard courts in Tokyo, Japan, that was part of the ATP 500 series of tournaments on the ATP Tour. It was the 48th edition of the Japan Open and was held 16 to 22 October.

Singles

 * Seeds
 * Draw

Doubles

 * Seeds
 * Draw