Authors Born on April 9
- Jackie Evancho Actor, 2000
- Jacques Villeneuve Racecar Driver, 1971
- Jairam Ramesh Economist, 1954
- James Henderson Athlete, 1965
- Jay Baruchel Actor, 1982
- Jay Chandrasekhar Comedian, 1968
- Jazmine Sullivan Singer-Songwriter, 1987
- Jean-Paul Belmondo Actor, 1933
- Jeff Zucker Chief Executive Officer, 1965
- Jenna Jameson Entrepreneur, 1974
- Jesse McCartney Singer-Songwriter, 1987
- Jim Fowler Zoologist, 1932
- Joe Scarborough Commentator, 1963
- Jordan Masterson Actor, 1986
- Joshua Ledet Singer, 1992
- Joyce Appleby Historian, 1929
- Keiji Shibazaki Admiral, 1894
- Keshia Knight Pulliam Actress, 1979
- Kevin Martin Singer, 1969
- Kim Yu-jin Singer, 1988
- Kim Yu-kwon Singer, 1992
- Kristen Stewart Actress, 1990
- Leighton Meester Actress, 1986
- Leon Blum Socialist, 1872
- Lil Nas X Rapper, 1999
- Lisa Guerrero Actress, 1964
- Marc Jacobs Fashion Designer, 1963
- Margaret Haddix Writer, 1964
- Mark Pellegrino Actor, 1965
- Martin Margiela Fashion Designer, 1957
- Michael Learned Actress, 1939
- Moran Atias Actress, 1981
- Nathaniel Branden Psychologist, 1930
- Neve McIntosh Actress, 1972
- Newton B. Drury Director, 1889
- Nigel Slater Writer, 1958
- Paul Robeson Actor, 1898
- Paulina Porizkova Supermodel, 1965
- Rachel Stevens Actress, 1978
- Rene Burri Photographer, 1933