William, Will, Bill, or Billy Davies may refer to:
Arts and literature William Davies (actor) (1751–1809), English actor William Davies (died 1819), English publisher with Cadell & Davies William Edmund Davies (1819–1879), English bookmaker W. H. Davies (William Henry Davies, 1871–1940), Welsh poet William Davies (screenwriter) (fl. 1980s–2010s), British-born American screenwriter
Law and politics William Davies (Georgia judge) (1775–1829), Georgia-based politician and lawyer William Davies (Pembrokeshire MP) (1821–1895), British member of parliament (MP) for Pembrokeshire, 1880–1892 William Davies (New South Wales politician) (1824–1890) William T. Davies (1831–1912), lieutenant governor of Pennsylvania, United States, 1887–1891 Sir William Howell Davies (politician) (1851–1932), British MP for Bristol South, 1906–1922 William Thomas Frederick Davies (1860–1947), South African surgeon, army officer and politician William Rees-Davies (judge) (William Rees Morgan Davies, 1863–1939), British MP for Pembrokeshire, 1892–1898 Rupert Davies (politician) (William Rupert Davies, 1879–1967), Canadian author, newspaper publisher and senator Billy Davies (politician) (1884–1956), Welsh-born Australian member of the New South Wales Legislative Assembly and the Australian Parliament Sir William Arthian Davies (1901–1979), British lawyer and judge William Gwynne Davies (1916–1999), trade unionist and politician in Saskatchewan, Canada William H. Davies (1931–2017), justice of the Supreme Court of British Columbia
Military William Davies (Virginia) (fl. 1770s), Continental Army officer in the American Revolutionary War William Davies (fl. late 18th century), British bullet-mould maker, founder of arms manufacturer Webley & Scott William W. Davies (USMC) (1900–1985), United States Marine Corps general
Religion William Davies (priest) (died 1593), Welsh Roman Catholic priest and martyr William W. Davies (1833–1906), leader of a schismatic Latter Day Saint group in Washington, United States William David Davies (1897–1969), Welsh Presbyterian minister and theologian
Science and medicine William Davies (palaeontologist) (1814–1891), British palaeontologist William Broughton Davies (1831–1906), Sierra Leonean medical doctor William Edward Davies (1917–1990), American geologist and caver William Davies (psychologist) (born 1950), British psychologist
Sportspeople Association football (soccer) William Davies (footballer, born 1854) (1854–1916), Oswestry F.C. and Wales international footballer William Davies (footballer, born 1873) (1873–1929), English footballer for Bolton Wanderers William Davies (footballer, born 1882) (1882–1966), Wrexham F.C., Blackburn Rovers F.C. and Wales international footballer Billy Davies (Welsh footballer) (1883–1960), Crystal Palace F.C., West Bromwich Albion F.C. and Wales international footballer William Davies (footballer, born 1884) (1884–1954), footballer for Stoke Willie Davies (footballer) (1900–1953), Swansea Town F.C., Cardiff City F.C., Notts County F.C., Tottenham Hotspur F.C. and Wales international footballer Taffy Davies (William Davies, 1910–1995), Welsh footballer with Watford Dai Davies (footballer, born 1948) (William David Davies, 1948–2021), Welsh goalkeeper Billy Davies (born 1964), Scottish footballer and manager Will Davies (footballer), English footballer
Cricket William Davies (English cricketer) (fl. 1844) William Davies (cricketer, born 1825) (1825–1868), English cricketer and clergyman Bill Davies (cricketer, born 1901) (1901–?), Welsh cricketer Bill Davies (cricketer, born 1906) (1906–1971), Welsh cricketer Billy Davies (cricketer, born 1936) (1936–2022), Welsh cricketer William Davies (cricketer, born 1972), English cricketer
Rugby William Davies (rugby) (1890–1967), Welsh rugby union and rugby league footballer of the 1910s and 1920s Will Davies (rugby) (fl. 1910s), rugby league footballer for Great Britain, Wales and Halifax Will Davies (rugby union) (1906–1975), Wales international rugby union player Billy Davies (Welsh rugby) (William H. J. Davies, fl. 1930s), rugby union and rugby league footballer Willie Davies (rugby) (1916–2002), Welsh dual-code rugby footballer Bill Davies (rugby league) (fl. 1940s), rugby league footballer for Wales, and Huddersfield Tony Davies (William Anthony Davies, 1939–2008), New Zealand rugby union footballer Billy Davies (rugby league, born 1948) (William Davies), English rugby league footballer
Other sports William Davies (sport shooter) (1881–1942), Canadian sport shooter who competed in Shooting at the 1912 Summer Olympics – Men's trap Bill L. Davies (1883–1959), Australian rules footballer Bill Davies (golfer) (1892–1967), English Ryder Cup golfer Bill Davies (Canadian football) (1916–1990), Canadian football player Bill Davies (footballer) (1930–2003), Australian footballer William Davies (wrestler) (1931–2020), Australian Olympic wrestler Willie Davies (tennis), British tennis player
Other people William Davies (highwayman) (died 1689), known as the Golden Farmer and hanged in Surrey, England William Henry Davies (entrepreneur) (1831–1921), Canadian pork packer William Davies (master mariner) (1862–1936), sea captain and partner in Davies and Newman William Llewelyn Davies (1887–1952), chief librarian of the National Library of Wales, Aberystwyth William J. Davies (fl. 1900–1927), Welsh trade union leader William Davies (political writer) (born 1976), English writer, political and sociological theorist William Davies (barber-surgeon), English barber-surgeon and traveller Bill Davies (died 2016), English real estate developer, owner of Old Chicago Main Post Office
Characters Will Davies, in the UK soap opera Hollyoaks, played by Billy Geraghty and Barny Clevely Billy Davis, in the UK TV soap opera River City, played by Gray O'Brien
Other uses William Davies Company, former Canadian pork packing firm
See also William Richardson Davie (1756–1820), governor of North Carolina William Davis (disambiguation) William Davies Evans (1790–1872), seafarer, inventor, and chess player William Rees-Davies (disambiguation) William Davies Thomas (1889–1954), professor of English at Saskatchewan and Swansea Billie Davies (born 1955), American jazz drummer and composer