Authors born in 1948
- James Nachtwey Photojournalist, 1948
- James Rebhorn Actor, 1948
- James Taylor Singer, 1948
- Jan C. Ting Professor, 1948
- Jan Hammer Musician, 1948
- Jay Parini Writer, 1948
- Jayne Ann Krentz Writer, 1948
- Jean O'Leary Activist, 1948
- Jean Reno Actor, 1948
- Jean-Michel Jarre Composer, 1948
- Jean-Pierre Raffarin Politician, 1948
- Jeffrey Osborne Singer-Songwriter, 1948
- Jennifer O'Neill Actress, 1948
- Jennifer Rowe Author, 1948
- Jeremy Irons Actor, 1948
- Jeremy Spencer Musician, 1948
- Jerry Mathers Actor, 1948
- Jim Samuels Author, 1948
- Jim Wallis Writer, 1948
- Jim Walton Businessman, 1948
- Jimmy Choo Fashion Designer, 1948
- Jimmy Cliff Singer, 1948
- Joan D. Vinge Author, 1948
- JoBeth Williams Actress, 1948
- Joe Bonsall Singer, 1948
- John B. Larson Politician, 1948
- John Bolton Attorney At Law, 1948
- John Bonham Musician, 1948
- John Carpenter Film Maker, 1948
- John Catsimatidis Businessman, 1948
- John Engler Businessman, 1948
- John Hall Musician, 1948
- John Henry Bonham Musician, 1948
- John Larson Politician, 1948
- John Lescroart Author, 1948
- John M. McHugh Politician, 1948
- John Noble Actor, 1948
- John Oates Musician, 1948
- John Ritter Actor, 1948
- John Scarlett Intelligence Officer, 1948