Erica Jong, Author; Erica Mann (New York City, New York 26 March 1942).

Spike Jonze, Film director; Adam Spiegel (St. Louis, Missouri 1969).

Janis Joplin, Singer; Janis Lyn Joplin (Port Arthur, Texas 19 January 1943 - 4 October 1970).

Jordan, Model; Katie Price (Brighton, England 22 May 1978).

Marian Jordan, Radio actor; Marian Driscoll (Peoria, Illinois 15 April 1898 - 7 April 1961).

Richard Jordan, Actor; Robert Anson Jordan (New York City 19 July 1938 - 30 August 1993).

Shug Jordan, Football coach; James Ralph Jordan (Selma, Alabama 25 September 1910 - 17 July 1980).

Christine Jorgensen, First highly publicized subject of surgical sex change; George William Jorgensen, Jr., (New York 30 May 1926 - 3 May 1989).

Joselito, Matador, Jose Gomez, (Spain 1895-1920).

Louis Jourdan, Actor, Louis Gendre, (France, 1919).

Benjamin Jowett, Scholar; Benjamin Jowett (1817-93).

Leatrice Joy, Silent Screen Actor; Leatrice Joy Zeidler (New Orleans 7 November 1893 - 13 May 1985).

Ashley Judd, Actor; Ashley Tyler Ciminella (Los Angeles, California 19 April 1968).

Naomi Judd, Singer, Diana Ellen Judd (USA 1947). Mother of Wynonna and Ashley.

Wynonna Judd, Singer; Christine Judd (USA 1964).

Jerry Juhl, Writer; Jerome Ravn Juhl, described as "the voice of the Muppets" (St Paul, Minnesota 27 July 1938 - 27 September 2005).

Raul Julia, Actor, Raul Raphael Carlos Julia y Arcelay, (Puerto Rico, 1940-1994).

Katy Jurado, Actor, Maria Christina Jurado Garcia, (Mexico, 1924).

Curt Jurgens, Actor; Curd Gustav Andreas Gottlieb Franz Jürgens (Solln, Bavaria, Germany 13 December 1915 - 18 June 1982).

Juvenile, Rapper; Terius Gray (Louisiana 1978).