- J. B. Morton
- J. B. S. Haldane
- J. Edgar Hoover
- J. Frank Dobie
- J. H. Oldham
- J. K. Rowling
- J. M. Barrie
- J. P. Morgan
- J. Paul Getty
- J. R. R. Tolkien
- J. W. Storm
- Jack Adams
- Jack Benny
- Jack Canfield
- Jack Dorsey
- Jack Kemp
- Jack Kerouac
- Jack Kirby
- Jack Kornfield
- Jack Layton
- Jack Lemmon
- Jack London
- Jack Nicklaus
- Jack Oakie
- Jack Paar
- Jack Penn
- Jack Vance
- Jack Welch
- Jacki Joyner-Kersee
- Jackie French Koller
- Jackie Gleason
- Jackie Mason
- Jackie Robinson
- Jackson Pollock
- Jacqueline Carey
- Jacqueline Kennedy Onassis
- Jacqueline Winspear
- Jacques Barzun
- Jacques de Biez
- Jacques Delille
- Jacques Deval
- Jacques Maritain
- Jacques Prévert
- Jacques Torres
- James A. Garfield
- James Abbott McNeill Whistler
- James Agate
- James Agee
- James Anthony Froude
- James Arthur Ray