William Fitzgerald

William Fitzgerald may refer to:


 * William FitzGerald (bishop) (1814–1883), Anglican bishop, first of Cork, Cloyne and Ross and then of Killaloe and Clonfert
 * William Fitzgerald (Bishop of Clonfert and Kilmacduagh) (died 1722), Anglican bishop in Ireland
 * William FitzGerald (Irish judge) (1906–1974), Irish lawyer and judge
 * William Fitzgerald (Tennessee politician) (1799–1864), United States Representative from Tennessee
 * William FitzGerald, 2nd Duke of Leinster (1749–1804), Irish liberal politician and landowner
 * William FitzGerald, 13th Earl of Kildare (died 1599), Irish nobleman
 * William FitzGerald-de Ros, 22nd Baron de Ros (1797–1874), British Lord and general
 * William Fitzgerald, Niagara Falls daredevil who used the alias Nathan Boya
 * William Charles Fitzgerald (1938–1967), United States Navy officer who was killed in action during the Vietnam War
 * William F. Fitzgerald (1846–1903), California Attorney General and a California Supreme Court justice
 * William H. G. FitzGerald (1909–2006), U.S. Ambassador to Ireland, 1992–1993
 * William Henry Fitzgerald (1849–1922), Wisconsin State Assemblyman
 * William J. Fitzgerald (1887–1947), U.S. Representative from Connecticut
 * William James Fitzgerald (jurist) (1894–1989), Irish jurist; Chief Justice of the Supreme Court of Palestine during the time of the British Mandate
 * William James Fitzgerald (Kansas politician) (1861–1937), Lieutenant Governor of Kansas


 * William Patrick Fitzgerald (1864–1938), Australian politician
 * William S. Fitzgerald (1880–1937), American politician
 * William Fitzgerald (educationalist) (1838–1920), New Zealand teacher and educationalist
 * William T. Fitzgerald (1858–1939), U.S. Representative from Ohio
 * William Thomas Fitzgerald (1759–1829), British poet
 * William Vincent Fitzgerald (1867–1929), Australian botanist
 * William B. Fitzgerald (1914–1970), Michigan politician
 * William B. Fitzgerald Jr. (1942–2008), American politician in Michigan