Namesakes
Eurovision Song Contest Winners:
1 winner
Johnny Logan 1980; 1987 Ireland 
Fictional Characters from Books:
1 hero
Johnny Tremain 1943 Johnny Tremain
Fictional Characters from Movies:
1 character, 1 hero
Johnny Number 5 1986 Short Circuit
Johnny "Handsome" Sedley 1989 Johnny Handsome
Fictional Characters from Plays and Musicals:
2 characters, 1 hero
Johnny Jones 1904 Little Johnny Jones
Johnny Johnson 1936 Johnny Johnson
Johnny Pye 1993 Johnny Pye and the Fool-Killer
Fictional Characters from Song Titles:
26 characters
(character) Johnny 1862 When Johnny Comes Marching Home
(character) Johnny 1904 Frankie and Johnny
(character) Johnny 1919 Johnny's in Town
(character) Johnny B. Goode 1958 Johnny B. Goode
(character) Johnny 1960 Bye Bye Johnny
(character) Johnny 1961 Johnny Remember Me
(character) Johnny 1962 Johnny Angel
(character) Johnny 1962 Johnny Get Angry
(character) Johnny 1963 Johnny Cool
(character) Johnny 1980 Johnny Hit and Run Pauline
(character) Johnny 1980 Johnny Bye Bye
(character) Johnny 1981 Johnny's Gonna Die
(character) Johnny 1982 Be Good Johnny
(character) Johnny 1982 Johnny Can't Read
(character) Johnny 1985 Johnny Come Home
(character) Johnny 1989 Johnny, Kick A Hole In The Sky
(character) Johnny 1995 Angry Johnny
(character) Johnny Park 1997 Hey, Johnny Park!
(character) Johnny 2005 Johnny Met June
(character) Johnny 2005 Johnny
(character) Johnny 2008 Johnny & June
(character) Johnny 2009 Johnny Guitar
(character) Johnny 2009 Johnny Magic
(character) Johnny 2011 Can't Keep Johnny Down
(character) Johnny 2013 Johnny Bagga' Donuts
(character) Johnny 2014 Prince Johnny
Fictional Characters from Television:
2 characters, 1 villain
John McKay (a.k.a. Johnny) 1987 Tour of Duty
Johnny Morgan 2012 American Horror Story: Asylum
Johnny Rose 2015 Schitt's Creek
Hall-of-Famers:
3 baseball, 3 football, 2 ice hockey
(baseball) Johnny Evers 1946
(football) Johnny "Blood" McNally 1963
(ice hockey) Johnny Bower 1976
(football) Johnny Unitas 1979
(baseball) Johnny Mize 1981
(ice hockey) Johnny Bucyk 1981
(baseball) Johnny Bench 1989
(football) Johnny Robinson 2019
Most Valuable Players:
2 winners
Johnny Unitas 1964; 1967 football
Johnny Bench 1970; 1972 baseball
Notable Actors and Entertainers:
7 actors, 1 presenter
Chief John Big Tree (a.k.a. Johnny) 1877-1967
Johnny Weissmuller 1904-1984
Johnny Carson 1925-2005
Johnny Depp 1963-
Johnny Knoxville 1971-
Johnny Galecki 1975-
Johnny Whitworth 1975-
Johnny Lewis 1983-2012
Notable Athletes:
3 baseball, 2 ice hockey, 2 poker, 2 soccer, 1 football, 1 swimming
(baseball) Johnny Evers 1881-1947
(swimming) Johnny Weissmuller 1904-1984
(poker) Johnny Moss 1907-1995
(baseball) Johnny Mize 1913-1993
(ice hockey) Johnny Bower 1924-2017
(football) Johnny Unitas 1933-2002
(ice hockey) Johnny Bucyk 1935-
(baseball) Johnny Bench 1947-
(soccer) Johnny Rep 1951-
(poker) Johnny Chan 1957-
(soccer) Johnny Herrera 1981-
Notable Musicians:
4 musicians, 4 singers, 1 composer
Johnny Mandel 1925-2020
Johnny Cash 1932-2003
Johnny Mathis 1935-
Johnny Nash 1940-2020
Johnny Hallyday 1943-2017
John Mellencamp (a.k.a. Johnny) 1951-
Johnny Logan 1954-
John Lydon (a.k.a. Johnny) 1956-
Johnny McDaid 1976-
Olympic Medalists:
1 bronze, 1 bronze/gold, 1 gold, 1 silver
(gold) Johnny Hayes 1908 marathon
(bronze/gold) Johnny Weissmuller 1924; 1928 swimming - 400 m freestyle; water polo; swimming - 100 m freestyle; swimming - 4x200 m freestyle relay
(bronze) Johnny Gray Jr. 1992 800 m
(silver) Johnny Oduya 2014 ice hockey
Rock and Roll Hall-of-Famers:
8 musicians
Johnny Moore 1988 The Drifters
Johnny Cash 1992
Johnny Graham 2000 Earth, Wind & Fire
Johnny Ramone 2002 The Ramones
Johnny Carter 2001; 2004 The Flamingos; The Dells
Johnny Funches 2004 The Dells
John Lydon (a.k.a. Johnny) 2006 The Sex Pistols
John Mellencamp (a.k.a. Johnny) 2008