1991 Australian Under-21 Individual Speedway Championship

The 1991 Australian Under-21 Individual Speedway Championship was the 5th running of the Australian Under-21 Individual Speedway Championship organised by Motorcycling Australia. The final took place on 6 January 1991 at the Olympic Park Speedway in Mildura, Victoria. The championship was won by Mildura's own Leigh Adams who won the third of his four national Under-21 championships. Shane Parker from Adelaide was second with another Mildura rider Jason Lyons in third place. Parker defeated Lyons in a run-off for the minor placings after both finished the meeting on 13 points. Former South Australian champion Scott Norman defeated Dave Hamnett from New South Wales in a run-off for fourth place after both finished the meeting on 11 points.

1991 Australian Under-21 Solo Championship

Pos.	Rider	Points	Details
	Leigh Adams ( )	15
	Shane Parker ( )	13+3
	Jason Lyons ( )	13+2
4	Scott Norman ( )	11+3
5	Dave Hamnett ( )	11+2
6	Mark Lemon ( )	10
7	Damon Richardson ( )	8
8	Jason Hawkes ( )	7
9	Cory Alderton ( )	7
10	Matthew Poole ( )	6
11	Brett Tomkins ( )	6
12	John Reid ( )	6
13	Clinton Butler ( )	4
14	Jamie Plumb ( )	2
15	Ty Platt ( )	1
16	Steven Butler ( )	0
17	Reece Davison ( ) (Res)	–	did not ride
18	Steve Graetz ( ) (Res)	–	did not ride

Loader, Tony (1991). Loader's International Speedway Annual 1991. Tony Loader. p. 66. ISSN 1036-4404.