Namesakes for JACK:
Australian Prime Ministers:
1 prime minister
John McEwen (a.k.a. Jack) 1967-1968
Emmy Award Winners:
3 actors
(actor) Jack Benny 1959 The Jack Benny Show 
(actor) Jack Klugman 1963; 1971; 1973 The Defenders; The Odd Couple 
(actor) Jack Albertson 1976 Chico and the Man
Fictional Characters from Books:
1 character
Jack Dawkins 1838 Oliver Twist
Fictional Characters from Plays and Musicals:
1 character, 1 hero
Captain Jack Absolute 1775 The Rivals 
John Worthing (a.k.a. Jack) 1895 The Importance of Being Earnest
Hall-of-Famers:
7 ice hockey, 5 football, 2 basketball, 1 baseball
(baseball) Jack Chesbro 1946 
(ice hockey) Jack Adams 1959 
(ice hockey) Jack Walker 1960 
(ice hockey) Jack Darragh 1962 
(ice hockey) Jack Laviolette 1962 
(basketball) Jack McCracken 1962 
(ice hockey) Jack Ruttan 1962 
(ice hockey) John "Black Jack" Stewart (a.k.a. Jack) 1964 
(ice hockey) Jack Marshall 1965 
(football) Jack Christiansen 1970 
(basketball) John Twyman (a.k.a. Jack) 1982 
(football) Jack Ham 1988 
(football) Jack Lambert 1990 
(football) Jack Youngblood 2001 
(football) Jack Butler 2012
Nobel Prize Winners:
2 physics
(physics) Jack Steinberger 1988 
(physics) Jack S. Kilby 2000
Notable Actors and Actresses:
8 actors, 1 comedian
Jack Benny 1894-1974 
Jack Albertson 1907-1981 
Jack Palance 1919-2006 
Jack Klugman 1922- 
Jack Lemmon 1925-2001 
Jack Nicholson 1937- 
Jack Shepherd 1940- 
Jack Spijkerman 1948- 
Jack Black 1969-
Notable Businesspeople:
1 businessperson
Jack Daniel 1849-1911
Notable Hosts and Presenters:
1 television
Television Jack Spijkerman 1948-
Notable Professional Athletes:
7 ice hockey, 5 football, 2 basketball, 2 boxing, 1 baseball, 1 golf
(football) Jack Butler 
(baseball) Jack Chesbro 
(football) Jack Christiansen 
(ice hockey) Jack Darragh 
(football) Jack Ham 
(football) Jack Lambert 
(ice hockey) Jack Laviolette 
(ice hockey) Jack Marshall 
(basketball) Jack McCracken 
(ice hockey) Jack Ruttan 
(ice hockey) Jack Walker 
(football) Jack Youngblood 
(ice hockey) John "Black Jack" Stewart (a.k.a. Jack) 
(basketball) John Twyman (a.k.a. Jack) 
(boxing) Jack Johnson 1878-1946 
(ice hockey) Jack Adams 1895-1968 
(boxing) Jack Dempsey 1895-1983 
(golf) Jack Nicklaus 1940-
Notable Writers:
2 authors
Jack London 1876-1916 
Jack Kerouac 1922-1969
Oscar Award Winners:
4 actors
(actor) Jack Albertson 1968 The Subject Was Roses 
(actor) Jack Lemmon 1955; 1973 Mister Roberts; Save the Tiger 
(actor) Jack Nicholson 1975; 1983; 1997 One Flew Over the Cuckoo's Nest; Terms of Endearment; As Good As It Gets 
(actor) Jack Palance 1991 City Slickers
Shakespearian Characters:
1 character
Jack Cade Henry VI (2)