Authors born in 1949
- Jamshyd Godrej Businessman, 1949
- Jan Brett Writer, 1949
- Jane Smiley Novelist, 1949
- Janet Maslin Journalist, 1949
- Jeff Bridges Actor, 1949
- Jeffery A. Cook Musician, 1949
- Jeremy Corbyn Politician, 1949
- Jeremy Thomas Film Producer, 1949
- Jeremy Webster Multi-Instrumentalist, 1949
- Jerry B. Jenkins Novelist, 1949
- Jerry Costello Politician, 1949
- Jerry Harrison Songwriter, 1949
- Jerry Lawler Professional Wrestler, 1949
- Jessica Hagedorn Poet, 1949
- Jessica Lange Actress, 1949
- Jim Broadbent Actor, 1949
- Jim Carroll Author, 1949
- Jim Carter Actor, 1949
- Jim Flaherty Minister, 1949
- Jim Gilmore Politician, 1949
- Jim Lampley Sports Commentator, 1949
- Jim Starlin Comedian, 1949
- Jim Varney Actor, 1949
- Joachim Sauer Chemist, 1949
- Joe Barton Politician, 1949
- Joe Regalbuto Actor, 1949
- Joe Theismann American Football Player, 1949
- John Belushi Comedian, 1949
- John Boehner Politician, 1949
- John Hogg Politician, 1949
- John Podesta Political Adviser, 1949
- John Sentamu Bishop, 1949
- John Shadegg Politician, 1949
- John T. Chambers Chief Executive Officer, 1949
- John Verity Guitarist, 1949
- John W. Thompson Chief Executive Officer, 1949
- Jok Church Cartoonist, 1949
- Jon English Singer-Songwriter, 1949
- Jonathan Carroll Writer, 1949
- Jonathan Galassi Publisher, 1949