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
Entertainment 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
Military 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
Politics Australia William Clark (Australian politician) (1844–1900), Australian politician and newspaper proprietor
Canada 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
United Kingdom 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
United States 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
Religion 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
Science William Andrew Clark (1911–1983), British botanist William Bullock Clark (1860–1917), American geologist William Inglis Clark (1855–1932), Scottish pharmaceutical chemist William J. Clark, Scottish orthodontist
Sports Football and rugby 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
Other sports 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
Professors 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
Other 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
See also William Clarke (disambiguation) William Clark Jr. (disambiguation) William H. Clark (disambiguation) Will Clark (disambiguation) Willie Clark (disambiguation) William Clerk (disambiguation)