| Tournament details | |
|---|---|
| Dates | 8–10 June 2018 |
| Competitors | 32S / 16D |
| Total prize money | US$170,000 |
| Venue | Kitakyushu City General Gymnasium |
| Location | Kitakyushu, Japan |
| Champions | |
| Men's singles |  Tomokazu Harimoto |
| Women's singles | Mima Ito |
| Men's doubles |  Jung Young-sik Lee Sang-su |
| Women's doubles |  Gu Yuting Mu Zi |
| Mixed doubles | Liang Jingkun Chen Xingtong |
The 2018 Japan Open was the sixth event of the 2018 ITTF World Tour. It took place from 8–10 June in Kitakyushu, Japan.[1]
- ^ "Seamaster 2018 ITTF World Tour, LION Japan Open / Prospectus" (PDF). ITTF. Archived from the original (PDF) on 12 June 2018. Retrieved 29 May 2018.