Authors born in 1943
- Jef Raskin Computer Scientist, 1943
- Jeff Bingaman Politician, 1943
- Jeffrey Tate Conductor, 1943
- Jerry Bruckheimer Film Producer, 1943
- Jerry Hunt Composer, 1943
- Jerry Kleczka Politician, 1943
- Jil Sander Fashion Designer, 1943
- Jim Barksdale Business Executive, 1943
- Jim Cantalupo Businessman, 1943
- Jim Croce Singer, 1943
- Jim Hightower Columnist, 1943
- Jim Loehr Psychologist, 1943
- Jim McCarty Musician, 1943
- Jim Mitchell Entertainer, 1943
- Jim Morrison Musician, 1943
- Jim Saxton Politician, 1943
- Jim Sensenbrenner Politician, 1943
- Jim Storm Actor, 1943
- Jimmy Griffin Singer-Songwriter, 1943
- Jimmy Johnson American Football Player, 1943
- Joan Van Ark Actress, 1943
- Joanna Trollope Writer, 1943
- Jocelyn Bell Burnell Astrophysicist, 1943
- Joe Haldeman Author, 1943
- Joe Henderson Athlete, 1943
- Joe Morgan Baseball Player, 1943
- Joe Namath American Football Player, 1943
- Joe Pesci Actor, 1943
- Joel Siegel Film Critic, 1943
- John F. Kerry Politician, 1943
- John Fairchild Basketball Player, 1943
- John Leeson Actor, 1943
- John Major Politician, 1943
- John Mica Businessman, 1943
- Johnny Hallyday Singer, 1943
- Jon Carroll Columnist, 1943
- Jon Postel Computer Scientist, 1943
- Jonathan Schell Author, 1943
- Joni Mitchell Singer-Songwriter, 1943
- Joseph J. Ellis Historian, 1943