Japan Open was played 18/08/2019 in Tokyo, Japan with 108 men, 22 women and 8 open youth (boys and girls)
WDF Tables updated with these results 26/08/2019.
| MEN’S SINGLES | Country | Position | WOMEN’S SINGLES | Country |
| Katsuya Aiba | Japan | 1 | Mayumi Ouchi | Japan |
| Yuichiro Ogawa | Japan | 2 | Kim Hyojin | Japan |
| Yuya Akutsu | Japan | 3 | Rie Ide | Japan |
| Wiwat Pannom | Thailand | 3 | Tomie Fukuhara | Japan |
| Ryuta Arihara | Japan | 5 | Maki Aiga | Japan |
| Shinichi Tanimura | Japan | 5 | Mayu Aoki | Japan |
| Hiroshi Tanji | Japan | 5 | Asako Atarashi | Japan |
| Robert Modra | Australia | 5 | Sayaka Kameo | Japan |
| Koji Odachi | Japan | 9 | Kazue Kimoto | Japan |
| Yuya Goto | Japan | 9 | Takako Kogama | Japan |
| Ryota Kobayashi | Japan | 9 | Itsuka Sawame | Japan |
| Keiji Sato | Japan | 9 | Kanoko Takahashi | Japan |
| Sivakorn Sangkittiamorn | Thailand | 9 | Tomoko Hirayanagi | Japan |
| Yoshiyuki Shimazaki | Japan | 9 | Haruka Hirose | Japan |
| Hisato Sotoosa | Japan | 9 | Mari Fukushima | Japan |
| Paitoon Duangtawan | Thailand | 9 | Akiko Furuse | Japan |
| Position | OPEN YOUTH SINGLES | Country | B/G |
| 1 | Sakuto Sueshige | Japan | B |
| 2 | Kim Lebbing | Thailand | G |
| 3 | Ishimori Hidehiko | Japan | B |
| 3 | Shusaku Nakamura | Japan | B |