13th World Open Championship in Kyokushin karate (IKO). Tokyo, Japan, 17–19 November 2023.
Winners
- Alexander Yeremenko — Russia
- Kaito Nishimura — Japan
- Andrey Luzin — Russia
- Antonio Tusseau — France
- Igor Zagainov — Russia
- Konstantin Kovalenko — Russia
- Maxim Ekimov — Russia
- Alexei Fedoseev — Russia
Awards
- Fighting spirit: Shintaro Okabe — Japan
- Best technique: Daiki Yamagami — Japan
- Best technique: Takumi Sato — Japan
- Tameshiwari: Danil Goryushkin — Russia
- Young lion: Bogomil Kostov — Bulgaria