13th World Open Championship in Kyokushin karate (SHIN (WKO)). Tokyo, Japan, 14–15 October 2023.
Winners
- Kembu Iriki — Japan
- Valeri Dimitrov — Bulgaria
- Edgard Sečinski — Lithuania
- Anton Zimarev — Kazakhstan
- Yuki Okada — Japan
- Kosei Ochiai — Japan
- Ryuji Toda — Japan
- Yusaku Watanabe — Japan
Awards
- Fighting spirit: Yuki Okada — Japan
- Best technique: Ryuji Toda — Japan