William King may refer to:
- Bill King (1927–2005), American radio announcer
- Bill King (rugby league), rugby league footballer in Australia
- Bill King (rugby), New Zealand international rugby league player
- Billy King (cricketer) (1902–1987), Irish cricketer
- Commander Bill King (Royal Navy officer) (born 1910), submarine commander, circumnavigator, author
- Willie King (1943–2009), blues guitarist and singer
- W. B. R. King (William Bernard Robinson King, 1889–1963), British geologist
- William King (artist) (born 1925), American sculptor
- William King (author) (born 1959), British author and games designer, also known as Bill King
- William King (bishop) (1650–1729), Anglican Archbishop of Dublin
- William King (Canadian politician) (born 1930), British Columbia politician
- William King (doctor) (1786–1865), British physician, supporter of cooperative movement
- William King (engineer) (died 1929), Scottish engineer
- William King (geologist) (1809–1886), Irish geologist, first to recognize Homo neanderthalensis as a species
- William King (governor) (1768–1852), American statesman, governor of Maine
- William King (Governor of West Florida), governor of Florida, 1818–1819
- William King (London cricketer), English cricketer who played in the 1750s
- William King (minister) (1812–1895), Canadian Presbyterian minister and community founder
- William King (poet) (1663–1712), English poet
- William King (police officer), former Baltimore police officer sentenced to 315 years in prison
- William King (singer) (born 1949), singer with the 70's R&B group, the Commodores
- William King, 1st Earl of Lovelace (1805–1893) 8th Baron King and 1st Earl of Lovelace
- William Cutfield King (1829–1861), New Zealand politician
- William Frederick King (1854–1916), Canadian surveyor, astronomer, and civil servant
- William H. King (1863–1949), U.S. Senator from Utah
- William Lyon Mackenzie King (1874–1950), tenth Prime Minister of Canada
- William R. King (1786–1853), American statesman, Vice President under Franklin Pierce
- William R. King (judge) (1864–1934), Oregon legislator and supreme court jurist
- William Robert King, provincial level politician from Alberta, Canada
- William S. King (1828–1900), U.S. Congressman from Minnesota
- William Wickham King (1863–1959), amateur geologist
Famous quotes containing the words william and/or king:
“Utopia’s quite another land;
In her enterprising movements,
She is England—with improvements,”
—Sir William Schwenck Gilbert (1836–1911)
“Gargantua, at the age of four hundred four score and forty- four years begat his son Pantagruel, from his wife, named Badebec, daughter of the King of the Amaurotes in Utopia, who died in child-birth: because he was marvelously huge and so heavy that he could not come to light without suffocating his mother.”
—François Rabelais (1494–1553)