| Tournament details | |||
|---|---|---|---|
| Dates | 14–19 November | ||
| Edition | 1st | ||
| Level | Super 500 | ||
| Total prize money | US$420,000 | ||
| Venue | Kumamoto Prefectural Gymnasium | ||
| Location | Kumamoto, Japan | ||
| Champions | |||
| Men's singles |  Viktor Axelsen | ||
| Women's singles |  Gregoria Mariska Tunjung | ||
| Men's doubles |  He Jiting Ren Xiangyu | ||
| Women's doubles | Zhang Shuxian Zheng Yu | ||
| Mixed doubles | Zheng Siwei Huang Yaqiong | ||
| |||
The 2023 Japan Masters (officially known as the Kumamoto Masters Japan 2023) was a badminton tournament that took place at Kumamoto Prefectural Gymnasium in Kumamoto, Japan, from 14 to 19 November 2023 and had a total prize of $420,000.