Tags: Motorcycle Rider, Motorsport Racer.
Jack Ahearn (born 8 October 1924) was an Australian former Grand Prix motorcycle road racer. His best season was in 1964 when he won the 500cc Finnish Grand Prix and finished second to Mike Hailwood in the 500cc world championship. On 16 January 2001 Ahearn was awarded the Australian Sports Medal for his achievements.