William Clark (disambiguation)

William Clark (1770–1838) was an American soldier and explorer; governor of Missouri Territory.

William Clark may also refer to:

Business

W. H. Clark (brewer) (William Henry Clark, c. 1815–c. 1870), brewer in South Australia
William Bell Clark (1889–1968), American advertising executive and naval historian
William Clark (stockbroker), Australian financier and racehorse owner in London

Bill Clark (screenwriter) (born 1944), former New York Police Department detective and television writer
William Clark (artist) (1803–1883), Scottish marine painter
William Andrews Clark Jr. (1877–1934), American violinist and founder of the Los Angeles Philharmonic
Bill Clark (musician) (1925–1986), American jazz drummer
Billy C. Clark (1928–2009), American author

William A. Clark (soldier) (1828–1916), American Civil War soldier and Medal of Honor recipient
William Philo Clark (1845–1884), U.S. Army officer
William Leon Clark (1911–2005), Deputy Chief of Chaplains of the U.S. Air Force

William Clark (Australian politician) (1844–1900), Australian politician and newspaper proprietor

William George Clark (politician) (1865–1948), Canadian politician
William Harold Clark (1869–1913), Canadian politician in Alberta
William Mortimer Clark (1836–1915), Canadian politician
Keir Clark (William Keir Clark; 1910–2010), Canadian merchant and political figure in Prince Edward Island

William D. Clark (1916–1985), economist and first director of the Overseas Development Institute
William Clark, Baron Clark of Kempston (1917–2004), British politician (MP for Croydon South)
William Henry Clark (1876–1952), British civil servant and diplomat
William Moore Wallis Clark (1897–1971), Ulster Unionist member of the Senate of Northern Ireland

William Clark (merchant) (1670–1742), merchant and town official in Boston, Massachusetts
William Clark (congressman) (1774–1851), US Congressman from Pennsylvania and U.S. Treasurer
Billy J. Clark (1778–1866), American physician and politician from New York
William Clark Jr. (1798–1871), American politician and signatory to the Texas Declaration of Independence
William Clark Jr. (diplomat) (1930–2008), former United States Ambassador to India
William Clark (politician, born 1811) (1811–1885), New York politician
William A. Clark (1839–1925), copper baron and United States Senator from Montana
William A. Clark (Maryland politician) (born 1958), American politician from Maryland
William G. Clark (1924–2001), American jurist and politician
William G. Clark Jr. (1912–1990), American jurist and politician in Massachusetts
William P. Clark Jr. (1931–2013), American politician, and United States Secretary of the Interior
Ramsey Clark (William Ramsey Clark; 1927–2021), American politician, United States Attorney General
William Thomas Clark (1831–1905), American soldier and Congressman from Texas, 1869–1872
William Walter Clark (1885–1971), American politician from Wisconsin
William White Clark (1819–1883), Confederate politician

William Clark (Roman Catholic priest) (died 1603), English Roman Catholic priest and conspirator
William Clark (bishop) (died 1925), Canadian Anglican bishop
William Hawley Clark (1919–1997), bishop of the Episcopal Diocese of Delaware
William Robinson Clark (1829–1912), Canadian theologian
William Clark (Anglican priest), Massachusetts cleric

Bill Clark (American football) (born 1968), retired college football coach
Bill Clark (Australian footballer) (1922–2015), Australian rules footballer
Bill Clark (rugby union) (1929–2010), New Zealand rugby player
Billy Clark (footballer, born 1881) (1881–1937), Scottish football player
Billy Clark (footballer, born 1967), English football player
Billy Clark (footballer, born 1991), English football player
William Clark (football manager), Scottish football manager
William Dennison Clark (1885–1932), American football player
William Clarke (footballer, fl. 1897–1900), also known as Billy Clark, football player for Lincoln City and Aberdeen F.C.
Willie Clarke (footballer) (1878–1940), born William Clark, Scottish football player for Aston Villa, Bradford and Bristol Rovers
Willie Clark (footballer, born 1932) (William Clark, 1932–2006), Scottish football player for QPR

William Clark (archer) (1842–1913), American Olympic archer
William Clark (boxer) (1899–1988), American boxer who competed in the 1920 Summer Olympics
William Clark (skier) (1910–1975), Canadian skier and Olympic competitor
Will Clark (William Nuschler Clark, Jr., born 1964), American professional baseball player
Bill Clark (basketball) (born 1988), American basketball player
Willie Clark (baseball) (William Otis Clark, 1872–1932), American baseball player
Willie Clark (ice hockey) (William McLean Clark, born 1931), British ice hockey player

William Clark (anatomist) (1788–1869), Professor of Anatomy at Cambridge University
William George Clark (1821–1878), British scholar of Shakespearean literature
William S. Clark (1826–1886), American agricultural scientist and educator at University of Massachusetts
William W. Clark (1940–2025), professor of art history
William C. Clark (born 1948), American ecologist and environmental policy analyst
William A. V. Clark (born 1938), professor of geography
William Mansfield Clark (1884–1964), American chemist

William Tierney Clark (1783–1852), English engineer and bridge designer
William Clark (inventor) (1821–1880), British civil engineer and inventor
William Nairne Clark (1804–1854), public notary and publisher in Australia
William Ovens Clark (1849–1937), barrister and judge in British India
William Clark (judge) (1891–1957), American federal judge