William Forsell Kirby (14 January 1844 – 20 November 1912) was an English entomologist and folklorist.

William Kirby (19 September 1759 – 4 July 1850) was an English entomologist, an original member

William Fosgate Kirby (November 16, 1867 – July 26, 1934) was a Democratic Party politician from

Ronald William "Josh" Kirby (27 November 1928 – 23 October 2001) was a commercial artist born

None

William J. Cameron "Cam" Kirby (January 12, 1909 – June 27, 2003) was an Alberta politician

William Kirby, (13 October 1817 – 23 June 1906) was a Canadian author, best known for his classic historical novel, The Golden Dog.

William Kirby (21 June 1883 – 3 October 1917), sometimes known as Bill Kirby or 'Sunny Jim' Kirby

Sir William "Kirby" Laing (21 July 1916 – 12 April 2009) was a British civil engineer.

William Kilty (1757 – October 10, 1821) was the Chief United States Circuit Judge of the United