William Ellis
William Ellis may refer to:
Politicians
- William Ellis (14th-century MP), in 1388, Member of Parliament for Canterbury
- William Ellis (Secretary of State), English Jacobite, secretary of State to James II in exile
- William Ellis (solicitor-general), English lawyer and politician
- William Craven-Ellis, Conservative Party politician in the United Kingdom
- William Cox Ellis, member of the United States House of Representatives from Pennsylvania
- William Henry Ellis (politician), English-born political figure in Newfoundland
- William R. Ellis, United States Congressman from Oregon from 1893–1899 and 1907–1911
- William T. Ellis, U.S. Representative from Kentucky
- William Ellis (Newfoundland politician), building contractor and political figure in Newfoundland
- William A. Ellis, member of the Wisconsin State Senate
- William Ellis (mayor), mayor of Hoboken, New Jersey
- William Ellis (Massachusetts politician), representative to the Great and General Court
Sportsmen
- William Ellis (English cricketer), English cricketer for Derbyshire
- William Ellis (Scottish cricketer), Scottish cricketer
- William Webb Ellis, Anglican clergyman, allegedly the inventor of rugby football
- Billy Ellis, English footballer
- Bill Ellis, English cricketer
Religious figures
- William Ellis (British missionary), English missionary and author
- William Ellis (missionary in Newfoundland), Irish-born Methodist clergyman, missionary in Newfoundland
- William Webb Ellis, Anglican clergyman, allegedly the inventor of rugby football
Others
- William Ellis (astronomer), English astronomer and meteorologist
- William Ellis (engraver), English engraver
- William Ellis (economist), English businessman, writer on economics, and educational thinker
- William Ellis (Medal of Honor), American soldier and Medal of Honor recipient
- William Ellis (writer on agriculture), English writer on agriculture
- Sir William Charles Ellis, English physician, pioneering superintendent of asylums and Methodist lay preacher
- William Ellis (actor), British actor, voice artist and podcaster
- William Henry Ellis (businessman) William Henry Ellis, was born into slavery and became a Mexican millionaire
- William Henry Ellis (engineer), British civil engineer and steel maker
- William Hodgson Ellis, British-Canadian chemist
- William Otoo Ellis, Vice Chancellor of the Kwame Nkrumah University of Science and Technology
- William Edward Ellis, U.S. Navy officer
- W. H. Ellis, justice of the Florida Supreme Court
- William Wade Ellis, naturalist and artist who accompanied Captain Cook