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.