1988 Speedway Under-21 World Championship

The 1988 Individual Speedway Junior World Championship was the 12th edition of the World motorcycle speedway Under-21 Championships. It was the first Championship open to all nations, which was why it was renamed the World Under-21 Championship from the European Under-21 Championship.

The event was won by Peter Nahlin of Sweden.

World final

 * 10 July 1988
 * Slaný Speedway Stadium, Slaný