11th World Open Championship in Kyokushin karate (IKO). Tokyo, Japan, 20–22 November 2015.
Winners
- Zahari Damyanov — Bulgaria
- Djema Belkhodja — France
- Darmen Sadvokasov — Russia
- Kiril Kochnev — Russia
- Ashot Zarinyan — Russia
- Mikio Ueda — Japan
- Ivan Mezentsev — Russia
- Shoki Arata — Japan
Awards
- Fighting spirit: Ashot Zarinyan — Russia
- Best technique: Yuta Takahashi — Japan
- Tameshiwari: David Sarkhosyan — Russia