IKO - International Karate Organization - 52nd All Japan Open Karate Championship (2020)
Open Kumite
| Rang | Catégorie | Champion | Pays |
| 1 | Open Kumite | Konstantin Kovalenko | Russia |
| 2 | Open Kumite | Kaito Nishimura | Japan |
| 3 | Open Kumite | Yuki Shimizu | Japan |
| 4 | Open Kumite | Koinosuke Ishizaki | Japan |
| 5 | Open Kumite | Tatsuma Yamagawa | Japan |
| 6 | Open Kumite | Takehiro Kaga | Japan |
| 7 | Open Kumite | Yuki Okudera | Japan |
| 8 | Open Kumite | Kento Kobayashi | Japan |