I   Ja   James   Je   Jo   Jones   Jong

Dennis James, Television game show host, Demie James Sposa, (USA, 1917-1997).

Elmore James, Blues singer; Elmore Brooks, (Richland, Mississippi, 27 January 1918 - 24 May 1963, Chicago).

Etta James, Singer, Jamesetta Hawkins (she reversed the syllables of first name), (USA, 1938).

Henry James, Novelist and writer, Henry James (USA, 1843-1916).

Henry James, Science fiction writer, L. C. Kellenberger (USA, 20th century).

Jesse James, Outlaw (Quantrill's Raiders); Jesse James (USA). Sometimes travelled as J. Frank Dalton.

Joni James, Pop singer; Giovanna Carmella Babbo (Chicago, Illinois 22 September 1930).

Kevin James, Comedian and actor; Kevin George Knipfing (Mineola, New York 26 April 1965). Brother of Gary Valentine.

P. D. James, Author; Phyliss Dorothy James (Oxford, England 3 August 1920).

Rick James, Singer and songwriter; James Ambrose Johnson (Buffalo, New York 1 February 1948 - 6 August 2004).

Sid James, Actor; Joel Solomon Cohen (Hillbrow, Johannesburg, South Africa 8 May 1913 - 26 April 1976).

Sonny James, Singer; James Loden (Hackleburg, Alabama 1 May 1929).

Jaimoe, Drummer, Allman Brothers Band; Johnny Lee Johnson (Ocean Springs, Mississippi 8 July1944).

William Janney, Actor, Russell Dixon Janney, (USA, 1908-92).

Emil Jannings, Actor (Won first ever male Academy award) Theodor Friedrich Emil Janenz, (Switzerland, 1884-1950).

David Janssen, Actor, David Howard Meyer (USA, 1931-1980).

Famke Janssen, Actor; Famke Beumer (Amsterdam, Netherlands 5 November 1965).

Tove Jansson, Writer; Tove Marika Jansson (Helsinki, 9 August 1914 - 27 June 2001, Helsinki) creator of Moomin.

Al Jarreau, Singer; Alwyn Lopez Jarreau (Milwaukee, Wisconsin 12 March 1940).

Hans Jarta, Revolutionary/administrator, Hans Hierta, (Sweden, 1774-1847).

David Jason, Actor, David White (London 2 February 1940).

Leigh Jason, Actor, Leigh Jacobson, (USA, 1904-79).

Sybil Jason, Actor; Sybil Jacobs (23 November 1929).

Jam Master Jay, DJ, turntablist (Run DMC); Jason Mizell (New York, 21 January 1965 - 30 October 2002).

Jay-Z, Rapper; Shawn Corey Carter (Brooklyn, New York 4 December 1969). Also known as Jay-C; birthdate varies.

Jazz, Singer (Dru Hill); Larry Anthony (USA).