2018 Japan Open (table tennis)

The 2018 Japan Open was the sixth event of the 2018 ITTF World Tour. It took place from 8–10 June in Kitakyushu, Japan.

Seeds
• # 🇩🇪 Timo Boll (semifinals)

• # 🇨🇳 Ma Long (quarterfinals)

• # 🇭🇰 Wong Chun Ting (first round)

• # 🇰🇷 Lee Sang-su (semifinals)

• # 🇯🇵 Koki Niwa (first round)

• # 🇯🇵 Tomokazu Harimoto (champion)

• # 🇫🇷 Simon Gauzy (second round)

• # 🇯🇵 Kenta Matsudaira (quarterfinals)

• # Chuang Chih-yuan (quarterfinals)

• # 🇸🇪 Kristian Karlsson (first round)

• # Jonathan Groth (first round)

• # 🇸🇪 Mattias Karlsson (second round)

• # 🇯🇵 Jin Ueda (quarterfinals)

• # 🇯🇵 Maharu Yoshimura (second round)

• # 🇰🇷 Jeong Sang-eun (first round)

• # 🇯🇵 Masaki Yoshida (first round)

Seeds
• # 🇯🇵 Kasumi Ishikawa (quarterfinals)

• # 🇨🇳 Wang Manyu (final)

• # 🇯🇵 Mima Ito (champion)

• # 🇯🇵 Miu Hirano (quarterfinals)

• # Cheng I-ching (quarterfinals)

• # 🇨🇳 Chen Xingtong (semifinals)

• # 🇸🇬 Feng Tianwei (first round)

• # 🇨🇳 Liu Shiwen (semifinals)

• # 🇭🇰 Doo Hoi Kem (first round)

• # 🇯🇵 Hitomi Sato (second round)

• # 🇰🇷 Seo Hyo-won (second round)

• # 🇯🇵 Hina Hayata (second round)

• # 🇷🇴 Elizabeta Samara (first round)

• # 🇭🇰 Lee Ho Ching (second round)

• # 🇯🇵 Miyu Kato (second round)

• # Chen Szu-yu (second round)

Seeds
• # 🇭🇰 Ho Kwan Kit / Wong Chun Ting (semifinals)

• # 🇯🇵 Jin Ueda / Maharu Yoshimura (first round)

• # 🇰🇷 Jung Young-sik / Lee Sang-su (champions)

• # 🇯🇵 Tomokazu Harimoto / Yuto Kizukuri (quarterfinals)

• # 🇸🇪 Kristian Karlsson / Mattias Karlsson (first round)

• # Chen Chien-an / Chuang Chih-yuan (quarterfinals)

• # 🇭🇰 Lam Siu Hang / Ng Pak Nam (first round)

• # 🇰🇷 Jang Woo-jin / Lim Jong-hoon (quarterfinals)

Seeds
• # 🇯🇵 Hina Hayata / Mima Ito (quarterfinals)

• # 🇯🇵 Honoka Hashimoto / Hitomi Sato (first round)

• # 🇭🇰 Doo Hoi Kem / Lee Ho Ching (first round)

• # 🇰🇷 Jeon Ji-hee / Yang Ha-eun (semifinals)

• # 🇭🇰 Ng Wing Nam / Soo Wai Yam Minnie (quarterfinals)

• # 🇨🇳 Liu Shiwen / Wang Manyu (final)

• # 🇸🇰 Barbora Balážová / 🇨🇿 Hana Matelová (quarterfinals)

• # 🇷🇴 Elizabeta Samara / Bernadette Szőcs (quarterfinals)

Seeds
• # 🇯🇵 Maharu Yoshimura / Kasumi Ishikawa (final)

• # 🇭🇰 Wong Chun Ting / Doo Hoi Kem (quarterfinals)

• # Chen Chien-an / Cheng I-ching (quarterfinals)

• # 🇭🇰 Ho Kwan Kit / Lee Ho Ching (semifinals)

• # 🇸🇪 Mattias Karlsson / Matilda Ekholm (first round)

• # 🇰🇷 Jang Woo-jin / Jeon Ji-hee (quarterfinals)

• # 🇰🇷 Lee Sang-su / Choi Hyo-joo (semifinals)

• # 🇨🇳 Liang Jingkun / Chen Xingtong (champions)