| Jack Kirby | |
| Fullname: | John James Kirby |
| Birth Date: | 1 July 1889 |
| Birth Place: | South Melbourne, Victoria |
| Death Place: | Carlton, Victoria |
| Originalteam: | Prahran Juniors |
| Height: | 170 cm |
| Weight: | 70 kg |
| Position: | Small forward, half-back flank |
| Statsend: | 1918 |
| Years1: | 1911–15, 1918 |
| Club1: | Essendon |
| Games Goals1: | 77 (113) |
John James Kirby (1 July 1889 – 11 March 1939) was an Australian rules footballer who played with Essendon in the Victorian Football League (VFL).
Kirby was a small forward and is the earliest known player to have kicked a goal with his first kick in the VFL, scored in 1911; this achievement would not be made again for nine years, when Gordon Coventry, an AFL Legend of the Australian Football Hall of Fame replicated the feat in 1920. Kirby had a good start to his career from a team point of view as well, not experiencing a loss until his 15th game. Kirby topped Essendon's goalkicking table in 1912, with 43 goals, and again the following season when he kicked 29 goals. He was a member of Essendon's premiership teams in 1911 and 1912.[1]