Black Jack (nickname)
Black Jack is the nickname of the following people:
- John Vernou Bouvier III, father of Jacqueline Kennedy Onassis
- Jack Blackham, Australian cricketer
- Jack Brabham, Australian motor racing world champion
- Jack Burdock, American Major League Baseball player and manager
- Black Jack Christian, American western outlaw
- John Davidson , American Civil War Union Army brigadier general and Indian fighter
- Frederick Galleghan, Australian Army major general
- Tom Ketchum, American western outlaw
- John McCauley, senior commander in the Royal Australian Air Force
- Jack McDowell, American Major League Baseball pitcher
- John McEwen, 18th Prime Minister of Australia
- John J. Pershing, United States Army general
- Jean Schramme, Belgian mercenary and planter
- Jack Stewart , Canadian National Hockey League player
