1998 Speedway Under-21 World Championship
| World Under-21 Championship | |
|---|---|
| Venue | Stadion Polonii Piła | 
| Location | Piła, Poland | 
| Start date | 1 August 1998 | 
The 1998 Individual Speedway Junior World Championship was the 22nd edition of the World motorcycle speedway Under-21 Championships.
The final was won by Robert Dados of Poland. The success also gained him qualification to 1999 Speedway Grand Prix.