1991 Speedway Under-21 World Championship
The 1991 Individual Speedway Junior World Championship was the 15th edition of the World motorcycle speedway Under-21 Championships.
Brian Andersen won the final, defeating fellow Dane Morten Andersen in a run-off for the title after both riders had finished on 14 points.
Qualifying
- 17 May Meissen Speedway Stadium, Meissen
- 24 May Belle Vue Stadium, Manchester
- 30 May Grevby Motorstadion, Mariestad
- 28 June Eichenring, Oberkrämer
Semi-finals
- 12 July The Swallow's Nest, Tarnów
- 12 July Brovst Speedway Center, Brovst