| 1998 World Karate Championships | |
| Size: | 220 |
| Host City: |  Rio de Janeiro, Brazil |
| Dates: | 15–18 October |
| Stadium: | Ginásio do Maracanãzinho |
| Previous: | 1996 |
The 1998 World Karate Championships are the 14th edition of the World Karate Championships, and were held in Rio de Janeiro, Brazil from October 15 to October 18, 1998.
| Individual kata | |||
| Team kata |  | Yves Bardreau Stéphane Mari Laurent Riccio | |
| Kumite −60 kg | |||
| Kumite −65 kg | |||
| Kumite −70 kg | |||
| Kumite −75 kg | |||
| Kumite −80 kg | |||
| Kumite +80 kg | |||
| Kumite open | |||
| Team kumite | Marcos Fernández Fernando García Tomás Herrero César Martínez Jesús Montosa Óscar Olivares Óscar Vázquez | ||
| Individual kata | |||
| Team kata | | Susana Bueno Miriam Cogolludo Gema Méndez | |
| Kumite −53 kg | |||
| Kumite −60 kg | |||
| Kumite +60 kg | |||
| Kumite open | |||
| Team kumite | Yıldız Aras Nurhan Fırat Leyla Gedik Meral Ölmez | ||
Gloria Casanova Rosa Ortega Beatriz Pérez |