William Harris
William or Will or Willie Harris may refer to:
Politicians and political activists
- William Harris (born 1504), MP for Newport, Cornwall
- William Harris (died 1556), MP for Maldon
- William Harris (MP, died 1709), English landowner and member of parliament for St Ives, and for Okehampton
- William Harris (Birmingham Liberal), Liberal Party politician and strategist, architect, and writer, in Birmingham, England
- William Harris (civil rights leader), Australian advocate for Aboriginal rights
- William Harris (Symbionese Liberation Army), 20th century American militant
- William Alexander Harris (Kansas politician), U.S. Representative from Kansas
- William Alexander Harris (Virginia politician), U.S. Representative from Virginia
- William C. Harris (Illinois politician), American politician
- William J. Harris, U.S. Senator from Georgia
- William Littleton Harris, Justice of the Mississippi Court of Errors and Appeals
- William L. Harris, American politician
- William James Harris, Conservative Party politician
- William R. Harris, justice of the Tennessee Supreme Court
- William Harris (New York politician), American businessman and politician from New York
Sportsmen
- William Harris (American football), American football tight end
- Will Harris (American football), American football cornerback
- Bill Harris (swimmer), American swimmer and Olympic bronze medallist
- William Harris (tennis), American tennis player
- William Harris (cricketer, born 1861), English cricketer
- William Harris (cricketer, born 1864), English cricketer
- William Harris (cricketer, born 1883), English cricketer
- William Harris (footballer), Scottish footballer
- William Harris (rugby union), New Zealand rugby union player
- Will Harris (baseball), baseball player
- Willie Harris, baseball player
- Will Harris (rugby union), Australian rugby union player
- Will Harris (footballer), English footballer
Academics and religious figures
- William Harris (Presbyterian minister), English divine
- William Harris (historian), English dissenting minister and historian
- William Harris (academic), president of Columbia University
- William C. Harris (historian), professor of history at North Carolina State University
- William Logan Harris, Bishop of the Methodist Episcopal Church
- William H. Harris (botanist), Irish botanist
- William Henry Harris (academic), Welsh divine, canon and treasurer of St David's Cathedral, and professor of Welsh at St David's College, Lampeter
- William Stewart Harris, English-born Australian anthropologist, journalist and Aboriginal rights advocate
- William V. Harris, professor of history
- William Wadé Harris, African evangelist
- William S. Harris, American professor and researcher on human nutrition
Soldiers
- William Harris (colonist), figure in the American Revolution
- William Harris, 2nd Baron Harris, British soldier and peer
- William Harris, American Civil War colonel, son of Ira Harris
- William W. Harris (Medal of Honor), Medal of Honor recipient for action in the Indian Wars
- William Frederick Harris, United States Marine Corps officer
Engineers, inventors and scientists
- William Cornwallis Harris, English military engineer, artist and hunter
- Sir William Gordon Harris, British civil engineer
- William Snow Harris, invented a ship-borne lightning rod
- William Harris, former director general of Science Foundation Ireland
Others
- Will Harris (poet), British poet
- William Harris (beachcomber), British escaped convict and settler in pre-colonial Nauru
- William Harris (musician), American country blues guitarist, singer, and songwriter
- William Harris (theatrical producer), American theatre producer and vaudevillian performer
- William Harris (Tudor person), English knight, landowner and incorporator in the third Virginia Company of London
- William Harris (settler), founding settler of Providence, Rhode Island
- William Harris, 6th Earl of Malmesbury, British peer
- Bill Harris (neuroscientist), Canadian-born neuroscientist
- William Critchlow Harris, Canadian architect
- William C. Harris (police officer), Assistant Commissioner of the Metropolitan Police, 1856–1881
- Sir William Henry Harris, English organist and composer
- William H. Harris (orthopaedic surgeon), American orthopaedic surgeon
- William Laurel Harris, American muralist and editor
- William Lewarne Harris, English composer
- William Torrey Harris, United States Commissioner of Education, American educator, philosopher, lexicographer
- William Harris Jr., Broadway theatrical producer
- William Harris, founder of the Ottawa Citizen newspaper
- William Bevan Harris, British-American comic actor, better known as Billy Bevan