 | |||
| Tournament details | |||
|---|---|---|---|
| Dates | 23–28 July | ||
| Level | Super 750 | ||
| Total prize money | US$750,000 | ||
| Venue | Musashino Forest Sport Plaza | ||
| Location | Tokyo, Japan | ||
| Champions | |||
| Men's singles |  Kento Momota | ||
| Women's singles | Akane Yamaguchi | ||
| Men's doubles |  Marcus Fernaldi Gideon Kevin Sanjaya Sukamuljo | ||
| Women's doubles |  Kim So-yeong Kong Hee-yong | ||
| Mixed doubles |  Wang Yilyu Huang Dongping | ||
| |||
The 2019 Japan Open (officially known as the Daihatsu Yonex Japan Open 2019 for sponsorship reasons) was a BWF World Tour 750 event which took place at Musashino Forest Sport Plaza in Tokyo, Japan, from 23 to 28 July 2019. It had a total purse of $750,000.