Authors born in 1946
- Iain Matthews Musician, 1946
- Ian McKeever Artist, 1946
- Ian Schrager Entrepreneur, 1946
- Ilie Nastase Athlete, 1946
- Ingram Cecil Connor III Singer-Songwriter, 1946
- Ivan Reitman Actor, 1946
- J. Geils Guitarist, 1946
- Jack Horner Scientist, 1946
- Jack Straw Politician, 1946
- James F. Amos Military Officer, 1946
- James Howe Writer, 1946
- James McCloughan Soldier, 1946
- Jamie Wyeth Painter, 1946
- Jane Asher Actress, 1946
- Jane Birkin Actress, 1946
- Janet Street-Porter Journalist, 1946
- Janet Yellen Economist, 1946
- Jann Wenner Publisher, 1946
- Jeff Sessions Politician, 1946
- Jeffrey Gitomer Author, 1946
- Jeffrey Jones Actor, 1946
- Jerome Corsi Author, 1946
- Jerry Nachman Editor, 1946
- Jim Crace Writer, 1946
- Jim Edgar Politician, 1946
- Jim Evans Umpire, 1946
- Jim Oberweis Businessman, 1946
- Jim Ramstad Politician, 1946
- Jim Valvano Coach, 1946
- Jim Webb Politician, 1946
- Jimmy Buffett Musician, 1946
- Jimmy Webb Singer-Songwriter, 1946
- Jincy Willett Author, 1946
- Joanna Lumley Model, 1946
- Jodi Rell Politician, 1946
- Joe Dante Film Director, 1946
- Joe Greene American Football Player, 1946
- Joe Klein Journalist, 1946
- John Bach Actor, 1946
- John C. Mather Astrophysicist, 1946