IKO - International Karate Organization - 29th All Japan Weight Category Karate Tournament (2012)
Kumite Lightweight
| Rang | Catégorie | Champion | Pays |
| 1 | Kumite Lightweight | Takaichi Onuma | Japan |
| 2 | Kumite Lightweight | Naoya Kimura | Japan |
| 3 | Kumite Lightweight | Alexander Mikhailov | Russia |
| 4 | Kumite Lightweight | Hikaru Tanikawa | Japan |
Kumite Middleweight
| Rang | Catégorie | Champion | Pays |
| 1 | Kumite Middleweight | Zenjyuro Mori | Japan |
| 2 | Kumite Middleweight | Yuta Sawamura | Japan |
| 3 | Kumite Middleweight | Yuta Takahashi | Japan |
| 4 | Kumite Middleweight | Takuya Takeoka | Japan |
Kumite Heavyweight
| Rang | Catégorie | Champion | Pays |
| 1 | Kumite Heavyweight | Daiki Kobayashi | Japan |
| 2 | Kumite Heavyweight | Shohei Kamada | Japan |
| 3 | Kumite Heavyweight | Tatsuya Murata | Japan |
| 4 | Kumite Heavyweight | Yota Higuchi | Japan |
Kumite Super Heavyweight
| Rang | Catégorie | Champion | Pays |
| 1 | Kumite Super Heavyweight | Shoki Arata | Japan |
| 2 | Kumite Super Heavyweight | Sergey Uvitsky | Russia |
| 3 | Kumite Super Heavyweight | Satoru Araki | Japan |
| 4 | Kumite Super Heavyweight | Steven Cujic | Australia |