1st World Open Championship in Kyokushin karate (IKO). Tokyo, Japan, 1–3 November 1975.

Winners

  1. Katsuaki Sato — Japan
  2. Hatsuo Royama — Japan
  3. Joko Nimoniya — Japan
  4. Daigo Oishi — Japan
  5. Toshikazu Sato — Japan
  6. Takashi Azuma — Japan
  7. Charles W. Martin — USA
  8. Frank Clark — USA