IKO - International Karate Organization - 18th All Japan Weight Category Karate Tournament (2001)
Kumite Lightweight
| Rang | Catégorie | Champion | Pays |
| 1 | Kumite Lightweight | Yuuki Fukuii | Japan |
| 2 | Kumite Lightweight | Shiro Yaginuma | Japan |
| 3 | Kumite Lightweight | Koji Yasuda | Japan |
| 4 | Kumite Lightweight | Osamu Shiojama | Japan |
Kumite Middleweight
| Rang | Catégorie | Champion | Pays |
| 1 | Kumite Middleweight | Yuji Shin | Japan |
| 2 | Kumite Middleweight | Tatsuya Fukuda | Japan |
| 3 | Kumite Middleweight | Tadashi Honma | Japan |
| 4 | Kumite Middleweight | Masataka Ino | Japan |
Kumite Heavyweight
| Rang | Catégorie | Champion | Pays |
| 1 | Kumite Heavyweight | Yoshinori Ikeda | Japan |
| 2 | Kumite Heavyweight | Masashi Nakagawa | Japan |
| 3 | Kumite Heavyweight | Fumihiro Sugiyama | Japan |
| 4 | Kumite Heavyweight | Norihiro Seto | Japan |
Kumite Super Heavyweight
| Rang | Catégorie | Champion | Pays |
| 1 | Kumite Super Heavyweight | Atsushi Kadoi | Japan |
| 2 | Kumite Super Heavyweight | Shinji Adachi | Japan |
| 3 | Kumite Super Heavyweight | Tsuneya Ichikawa | Japan |
| 4 | Kumite Super Heavyweight | Hirokazu Kondo | Japan |