| Jack Ryan | |
| Fullname: | John Leo Ryan |
| Birth Date: | 24 July 1907 |
| Birth Place: | Kerang, Victoria |
| Death Place: | Malvern East, Victoria |
| Originalteam: | Carnegie |
| Height: | 165 cm |
| Weight: | 67 kg |
| Position: | Rover |
| Statsend: | 1933 |
| Years1: | 1929–1933 |
| Club1: | Hawthorn |
| Games Goals1: | 70 (142) |
John Leo Ryan (24 July 1907 – 4 July 1959)[1] [2] was an Australian rules footballer who played with Hawthorn in the Victorian Football League (VFL).
Originally from Carnegie, Ryan played his football at Hawthorn as a rover.[3]
He was Hawthorn's leading goal-kicker in 1931 and 1932, with 39 and 37 goals respectively.[4]