William Harris
William or Will or Willie Harris may refer to:
Politicians and political activists
- William Harris (born 1504) (1504–?), MP for Newport, Cornwall
 - William Harris (died 1556), MP for Maldon
 - William Harris (MP, died 1709) (c. 1652–1709), English landowner and member of parliament for St Ives, and for Okehampton
 - William Harris (Birmingham Liberal) (1826–1911), Liberal Party politician and strategist, architect, and writer, in Birmingham, England
 - William Harris (civil rights leader) (1867–1931), Australian advocate for Aboriginal rights
 - William Harris (Symbionese Liberation Army), 20th century American militant
 - William Alexander Harris (Kansas politician) (1841–1909), U.S. Representative from Kansas
 - William Alexander Harris (Virginia politician) (1805–1864), U.S. Representative from Virginia
 - William C. Harris (Illinois politician) (1921–2004), American politician
 - William J. Harris (1868–1932), U.S. Senator from Georgia
 - William Littleton Harris (1807–1868), Justice of the Mississippi Court of Errors and Appeals
 - William L. Harris (1923–2013), American politician
 - William James Harris (1835–1911), Conservative Party politician
 - William R. Harris (1803–1858), justice of the Tennessee Supreme Court
 - William Harris (New York politician), American businessman and politician from New York
 
Sportsmen
- William Harris (American football) (1965–2014), American football tight end
 - Will Harris (American football), American football cornerback
 - Bill Harris (swimmer) (1897–1961), American swimmer and Olympic bronze medallist
 - William Harris (tennis) (1947–2002), American tennis player
 - William Harris (cricketer, born 1861) (1861–1923), English cricketer
 - William Harris (cricketer, born 1864) (1864–1949), English cricketer
 - William Harris (cricketer, born 1883) (1883–1967), English cricketer
 - William Harris (footballer) (1890–?), Scottish footballer
 - William Harris (rugby union) (1876–1950), New Zealand rugby union player
 - Will Harris (baseball) (born 1984), baseball player
 - Willie Harris (born 1978), baseball player
 - Will Harris (rugby union) (born 2000), Australian rugby union player
 - Will Harris (footballer) (born 2000), English footballer
 
Academics and religious figures
- William Harris (Presbyterian minister) (1675?–1740), English divine
 - William Harris (historian) (1720–1770), English dissenting minister and historian
 - William Harris (academic) (1765–1829), president of Columbia University
 - William C. Harris (historian), professor of history at North Carolina State University
 - William Logan Harris (1817–1887), Bishop of the Methodist Episcopal Church
 - William Henry Harris (academic) (1884–1956), Welsh divine, canon and treasurer of St David's Cathedral, and professor of Welsh at St David's College, Lampeter
 - William Stewart Harris (1922–1994), English-born Australian anthropologist, journalist and Aboriginal rights advocate
 - William V. Harris (born 1938), professor of history
 - William Wadé Harris (c. 1860–1929), African evangelist
 - William S. Harris, American professor and researcher on human nutrition
 
Soldiers
- William Harris (colonist) (1757–1812), figure in the American Revolution
 - William Harris, 2nd Baron Harris (1782–1845), British soldier and peer
 - William Harris, American Civil War colonel, son of Ira Harris
 - William W. Harris (Medal of Honor) (1850–1878), Medal of Honor recipient for action in the Indian Wars
 - William Frederick Harris (1918–1950), United States Marine Corps officer
 
Engineers, inventors and scientists
- William Cornwallis Harris (1807–1848), English military engineer, artist and hunter
 - Sir William Gordon Harris (1912–2005), British civil engineer
 - William Snow Harris (1791–1867), invented a ship-borne lightning rod
 - William Harris, former director general of Science Foundation Ireland
 
Others
- Will Harris (poet) (born 1989), British poet
 - William Harris (beachcomber) (c. 1813–1889), British escaped convict and settler in pre-colonial Nauru
 - William Harris (musician) (fl. 1927–1928), American country blues guitarist, singer, and songwriter
 - William Harris (theatrical producer) (1844–1916), American theatre producer and vaudevillian performer
 - William Harris (Tudor person) (1556–1616), English knight, landowner and incorporator in the third Virginia Company of London
 - William Harris (settler) (1610–1681), founding settler of Providence, Rhode Island
 - William Harris, 6th Earl of Malmesbury (1907–2000), British peer
 - Bill Harris (neuroscientist) (born 1950), Canadian-born neuroscientist
 - William Critchlow Harris (1854–1913), Canadian architect
 - William C. Harris (police officer), Assistant Commissioner of the Metropolitan Police, 1856–1881
 - Sir William Henry Harris (1883–1973), English organist and composer
 - William H. Harris (orthopaedic surgeon) (born 1927), American orthopaedic surgeon
 - William Laurel Harris (1870–1924), American muralist and editor
 - William Lewarne Harris (1929–2013), English composer
 - William Torrey Harris (1835–1909), United States Commissioner of Education, American educator, philosopher, lexicographer
 - William Harris Jr. (1884–1946), Broadway theatrical producer
 - William Harris, founder of the Ottawa Citizen newspaper
 - William Bevan Harris, British-American comic actor, better known as Billy Bevan
 
See also
- Bill Harris (disambiguation)
 - William Harries
 - William Hamlyn-Harris (born 1978), Australian javelin thrower
 - William Harrison