IKO - International Karate Organization - 3rd All Japan Open Karate Championship (1971)
Open Kumite
| Rang | Catégorie | Champion | Pays |
| 1 | Open Kumite | Katsuaki Sato | Japan |
| 2 | Open Kumite | Yasuhiko Oyama | Japan |
| 3 | Open Kumite | Daigo Oishi | Japan |
| 4 | Open Kumite | Miyuki Miura | Japan |
| 5 | Open Kumite | Kenichi Kanagi | Japan |
| 6 | Open Kumite | Yukio Yoshioka | Japan |