Authors born in 1970
- Harold Ford, Jr. Politician, 1970
- Heather Brooke Journalist, 1970
- Heather Graham Actress, 1970
- Ian Christe Author, 1970
- Ian Williams Musician, 1970
- Ione Skye Film Actor, 1970
- Isabel Gillies Actress, 1970
- Izabella Scorupco Actress, 1970
- J. A. Adande Author, 1970
- J. A. Konrath Science Fiction Writer, 1970
- J. B. MacKinnon Journalist, 1970
- J. R. Bourne Actor, 1970
- James Mercer Singer-Songwriter, 1970
- James Murphy Musician, 1970
- Jamie Kennedy Comedian, 1970
- Jane Goldman Screenwriter, 1970
- Jason Calacanis Entrepreneur, 1970
- Jason Lee Actor, 1970
- Jason McCoy Singer-Songwriter, 1970
- Jason Moore Director, 1970
- Jason Orange Singer-Songwriter, 1970
- Jason Robert Brown Composer, 1970
- Jason Wiles Actor, 1970
- Jay Mohr Actor, 1970
- Jeff Berwick Entrepreneur, 1970
- Jeff Garcia American Football Player, 1970
- Jeff Landry Lawyer, 1970
- Jeff Mangum Singer-Songwriter, 1970
- Jeff Weiner Businessman, 1970
- Jenna Blum Writer, 1970
- Jennifer Connelly Actress, 1970
- Jennifer Gilmore Novelist, 1970
- Jennifer Weiner Writer, 1970
- Jennifer Westfeldt Actor, 1970
- Jens Martin Skibsted Designer, 1970
- Jeremy Denk Pianist, 1970
- Jesse Schell Game Designer, 1970
- Jim Courier Tennis Player, 1970
- Jim Thome Baseball Player, 1970
- Jo Dee Messina Singer, 1970