William Hamilton may refer to:

• Robert William Hamilton Jr. (1930–2011), known as Bill, American hyperbaric physiologist
• William Hamilton (university principal) (1669–1732), Principal of the University of Edinburgh
• William Hamilton (surgeon) (died 1717), surgeon in the British East India Company
• Sir William Hamilton, 9th Baronet (1788–1856), Scottish metaphysician
• William Rowan Hamilton (1805–1865), mathematician, astronomer and physicist who lived in Dublin in the United Kingdom of Great Britain and Ireland
• William Edwin Hamilton (1834–1902), son of William Rowan and publisher of his Elements of Quaternions (1866)
• William Hamilton (geologist) (1805–1867), English geologist
• William F. Hamilton (physician) (1893–1964), American physician
• William F. Hamilton (professor) (born 1941), professorship of management and technology
• William Hamilton (theologian) (1924–2012), American theologian
• W. D. Hamilton (1936–2000), British evolutionary biologist and geneticist
• Bill Hamilton (agricultural scientist) (1909–1992), New Zealand agricultural scientist and scientific administrator
• Willie Hamilton (academic) (born 1958), expert in cancer diagnosis
• William Baskerville Hamilton, historian

• William Hamilton (painter) (1751–1801), English painter
• William Hamilton Gibson (1850–1896), American illustrator, author and naturalist
• William Hamilton (cartoonist) (1939–2016), American cartoonist associated with The New Yorker

• William Anthony Hamilton, founder of American computer company Inslaw
• William Hamilton (lumber baron) (died 1822), lumber merchant and political figure in Upper Canada
• Bill Hamilton (engineer) (1899–1978), New Zealand engineer and inventor
• William Hamilton and Company, British shipbuilding firm

• William Hamilton (criminal), criminal who shot at Queen Victoria in 1849
• Billy Ray Hamilton (died 2007), American murderer

• William Hamilton (comic poet) (1665–1751), Scottish poet
• William Hamilton (Jacobite poet) (1704–1754), Scottish poet associated with the Jacobite movement
• William Hamilton (British Army officer) (c. 1896–1917), poet and soldier from Victoria Barracks, Windsor

• William Hamilton (Australian politician) (1858–1920), Queensland politician
• William John Warburton Hamilton, administrator, explorer, and politician in New Zealand

• William Ernest Hamilton (1902–1985), Ontario politician
• William McLean Hamilton (1919–1989), Canadian politician

• William Hamilton (died 1760), Member of Parliament for Londonderry City (Parliament of Ireland constituency)
• William Hamilton (died 1762), Member of Parliament for Strabane (Parliament of Ireland constituency)

• William S. Hamilton (1797–1850), son of Alexander Hamilton, well-known miner, politician, and commander
• William W. Hamilton (1810–1866), English-born American politician from Iowa
• William Hamilton (abolitionist) (1773–1836), abolitionist and orator
• William Hamilton (Flint politician) (died 1878), American politician
• William Thomas Hamilton (1820–1888), Governor of Maryland (1880–1884)
• William J. Hamilton (1932–2019), American politician
• Bill Hamilton (West Virginia politician) (born 1950), American state legislator in West Virginia
• G. William Hamilton (1933-2022), American politician and businessman

• William Hamilton (Lord Chancellor) (died 1307), Lord Chancellor of England
• William Hamilton, 2nd Duke of Hamilton (1616–1651), Scottish nobleman
• William Hamilton, Duke of Hamilton (1635–1694), Scottish nobleman
• William Gerard Hamilton (1729–1796), English statesman
• Sir William Hamilton (diplomat) (1730–1803), Scottish diplomat and husband of Emma Hamilton
• William Hamilton, 11th Duke of Hamilton (1811–1863), Scottish nobleman
• William Douglas-Hamilton, 12th Duke of Hamilton (1845–1895), Scottish nobleman
• Willie Hamilton (1917–2000), British Labour MP
• Lord William Hamilton (1700s–1734), member of parliament for Lanarkshire
• Sir William Hamilton of Sanquhar, pursemaster for James V

• William Hamilton (cricketer) (1859–1914), Irish cricketer
• William Hamilton (cyclist) (1930–2017), Canadian Olympic cyclist
• William Hamilton (footballer) (1903–?), Scottish footballer
• Billy Hamilton (baseball, born 1866) (1866–1940), 19th century American Major League baseball player
• Billy Hamilton (baseball, born 1990) (born 1990), 21st century American Major League baseball player
• William Hamilton (tennis player) (1869–1943), Irish tennis player
• William Hamilton (athlete) (1883–1955), 1908 Olympic gold medalist
• William Hamilton (sport shooter) (1884–1939), Canadian Olympic shooter
• William Hamilton (equestrian) (1921–2007), Swedish Olympic equestrian
• Willie Hamilton (footballer, born 1938) (1938–1976), Scottish footballer
• Willie Hamilton (footballer, born 1889) (1889–1921), Scottish footballer
• Bill Hamilton (rugby league) (born 1945), Australian rugby league footballer
• Billy Hamilton (footballer) (born 1957), Northern Irish footballer
• Pud Hamilton (William Hamilton, 1874–1965), Canadian ice hockey player

• William Hamilton (antiquarian) (died 1724), Scottish topographer and genealogist, grandfather of William Gerard Hamilton
• William DaShawn Hamilton (1992– c. 1998), an American child whose skeletal remains were found under suspicious circumstances
• William Richard Hamilton (1777–1859), English antiquarian and traveler
• William Peter Hamilton (1867–1929), Wall Street Journal editor
• William Hamilton (film editor) (1893–1942), film editor
• Bill Hamilton, bassist for the Canadian band Silverstein
• William Hamilton (physician) (1758–1790), Scottish physician and botanist
• William Hamilton (Irish minister) (1755–1797), Irish Protestant minister, geologist, meteorologist and antiquarian
• William Thomas Hamilton (frontiersman) (1822–1908), English-born American frontiersman and author
• William Hamilton (actor), Irish stage actor of the eighteenth century
• William Hamilton (priest), Archdeacon of Armagh
• William G. Hamilton (1932–2022), American physician
• Bill Hamilton (journalist), Washington editor for The New York Times
• William L. Hamilton, Shaken and Stirred columnist for The New York Times

Topics referred to by the same term

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