IKO - International Karate Organization - 30th All Japan Open Karate Championship (1998)
Male Kumite
| Rang | Catégorie | Champion | Pays |
| 1 | Male Kumite | Hajime Kazumi | Japan |
| 2 | Male Kumite | Yoshihiro Tamura | Japan |
| 3 | Male Kumite | Hitoshi Kiyama | Japan |
| 4 | Male Kumite | Ryuta Noji | Japan |
| 5 | Male Kumite | Masayoshi Takaku | Japan |
| 6 | Male Kumite | Naoki Ichimura | Japan |
| 7 | Male Kumite | Atsushi Kadoi | Japan |
| 8 | Male Kumite | Yasuhiko Kimura | Japan |