William, Bill, or Billy Turner may refer to:
Arts and entertainment
William Turner (composer) (1651–1740), English baroque composer
J. M. W. Turner (William Turner, 1775–1851), English Romantic landscape painter, watercolourist and printmaker
William Turner (painter) (1789–1862), English watercolour painter
William Greene Turner (1833–1917), American sculptor
William H. Turner (actor) (1861–1942), Irish actor
William Lakin Turner (1867–1936), English landscape artist
William Ralph Turner (1920–2013), English painter
William J. G. Turner (1952–1987), American composer and stage director
Law and politics
William Turner (London MP) (1615–1693), British member of parliament for City of London and lord mayor of London
William Turner (Blackburn MP) (1777–1842), British member of parliament for Blackburn
William F. Turner (1816–1899), judge in the Territory of Arizona
William D. Turner (1836–1905), Wisconsin state assemblyman
William Turner (Australian politician) (1837–1916), New South Wales politician
William V. Turner (fl. 1871), American state representative in Alabama
William George Turner (1872–1937), Irish Lord Mayor of Belfast
William H. Turner (politician) (1931–2002), African-American school board member and state senator from Miami, Florida
Religion
William Turner (minister at Wakefield) (1714–1794), English dissenting divine
William Turner (Unitarian minister) (1761–1859), English Unitarian minister
William Turner (biographer) (1788–1853), English Unitarian minister
William Turner (bishop of Salford) (1799–1872), English Roman Catholic bishop and vicar apostolic
William Turner (bishop of Galloway) (1844–1914), Scottish Roman Catholic bishop
William Turner (bishop of Buffalo) (1871–1936), Irish-American Roman Catholic bishop
William Turner (priest) (1647–1685), English Anglican priest
Science and medicine
William Turner (naturalist) (c. 1508–1568), English ornithologist and botanist; dean of Wells Cathedral
William Wadden Turner (1810–1859), British-born American linguist and librarian
William Turner Thiselton-Dyer (1843–1928), British botanist
William Aldren Turner (1864–1945), British neurologist
W. E. S. Turner (William Ernest Stephen Turner, 1881–1963), English chemist and glass technologist
Sports
Association football (soccer)
Willie Turner (footballer) (c. 1866–?), Scottish international footballer
William Turner (footballer, born 1867) (1867–?), Welsh international footballer
Bill Turner (footballer, born 1894) (1894–1970), English footballer
Bill Turner (English footballer, born 1901) (1901–1989), British footballer
Australian rules football
Bill Turner (footballer, born 1870) (1870–1952), Australian rules footballer for St Kilda
Bill Turner (Australian footballer, born 1901) (1901–1967), Australian rules footballer for Fitzroy
Bill Turner (footballer, born 1912) (1912–1981), Australian rules footballer for Essendon
Other sports
Aggie Turner (William Turner, 1893–1916), American baseball player
Billy Turner (William H. Turner Jr., 1940–2021), American racehorse trainer
Bill Turner (basketball) (1944–2023), American basketball player
Willie Turner (sprinter) (born 1948), American sprinter
Bill Turner (American football) (born 1960), American football player
Billy Turner (American football) (born 1991), American football player
Others
William Turner (envoy) (1792–1867), British diplomat and author
William Iredell Turner (1812–1881), Florida pioneer and soldier
William Turner (anatomist) (1832–1916), Scottish academic
William Thomas Turner (1856–1933), final captain of the RMS Lusitania
Bill Turner (public servant) (1887–1959), Australian public servant; Comptroller-General of Customs
William Irving Turner (1890–1950), American architect
William B. Turner (1892–1918), U.S. Army officer and Medal of Honor recipient
William Turner (1902/03–1921), 18-year-old lynching victim from Helena, Phillips County, Arkansas, see lynching of William Turner
William Turner (British Army officer) (1907–1989)
William W. Turner (1927–2015), American writer and former FBI agent
In fiction
Bootstrap Bill Turner, father of Will Turner in Disney's Pirates of the Caribbean films
Will Turner, fictional character in Disney's Pirates of the Caribbean films