IKO - International Karate Organization - 5th All Japan Open Karate Championship (1973)
Open Kumite
| Rang | Catégorie | Champion | Pays |
| 1 | Open Kumite | Hatsuo Royama | Japan |
| 2 | Open Kumite | Terutomo Yamazaki | Japan |
| 3 | Open Kumite | Toshikazu Sato | Japan |
| 4 | Open Kumite | Katsuaki Sato | Japan |
| 5 | Open Kumite | Yoshimoto Togashi | Japan |
| 6 | Open Kumite | Tokiyosi Matsumoto | Japan |
| 7 | Open Kumite | Noriyasu Hamai | Japan |
| 8 | Open Kumite | Joko Ninomiya | Japan |