William Butler
William Butler may refer to:
Actors
- William Butler (actor), U.S. actor, played in Leatherface: The Texas Chainsaw Massacre III
- William J. Butler, Irish silent film actor
Law
- William Allen Butler, American lawyer and writer of poetical satires
- William E. Butler, American-British legal scholar
- William Butler (judge), U.S. federal judge
Military
- William Butler (colonel), American Revolutionary War soldier from Pennsylvania, one of five Butler brothers in the war
- William Butler (1759–1821), American Revolutionary War soldier, 1790s militia general, U.S. Representative from South Carolina
- William Butler (militiaman), U.S. militia captain killed in the Creek War, namesake of Butler County, Alabama
- William Orlando Butler, U.S. soldier in the War of 1812 and Mexican–American War, 1848 Democratic vice-presidential candidate
- Sir William Butler (British Army officer), 19th century British Army lieutenant general and adventurer
- William Boynton Butler, British Army soldier awarded a Victoria Cross
Music
- William Butler (musician), American musician, member of the Arcade Fire
- William Butler (sound designer), British/Canadian musician, sound designer and recording engineer
Politics
- William Butler, Member of Parliament for Nottingham
- William Butler (1544–1577), MP for Queenborough
- William Boteler (died 1602), or Butler, MP for Lyme Regis and Bedford
- William Butler (1790–1850), U.S. Representative from South Carolina
- William Butler, Illinois State Treasurer
- William M. Butler, lawyer and legislator for the state of Massachusetts, United States Senator
- William Henry Butler, English wine merchant and Mayor of Oxford
- William Butler (New Zealand politician), New Zealand politician
Religion
- William Butler (missionary), Irish-born U.S. Methodist Episcopal missionary to Mexico and India
- William John Butler, High Church Anglican priest
- William Butler (canon), Canon of Windsor
Sports
- William C. Butler, played football for England
- William Butler (cricketer), New Zealand first-class cricketer, later international Test cricket umpire
- William Butler (footballer), Druids F.C. and Wales international footballer
- William Butler (boxer), boxer
Others
- William Butler (alchemist), Irish alchemist
- William Butler (physician), Fellow of Clare College, Cambridge
- William Archer Butler, Irish historian of philosophy
- William Corly Butler, Methodist minister in Australia
- William Edward Butler, West Tennessee settler
- William F. Butler, African American leader after the American Civil War
- William James Butler, New Zealand sawmiller and timber merchant
- William Butler, whose company was merged into Mitchells & Butlers
- William Butler, author of the novel ''The Butterfly Revolution''