William Powell (disambiguation)
William Powell (1892–1984) was an American actor.
William Powell may also refer to:
Sports
- William Powell (American football) (born 1988), NFL running back
- Bill Powell (baseball) (1885–1967), pitcher in Major League Baseball
Politicians
- William Edward Powell (1788–1854), British Member of Parliament
- William E. Powell (born 1934), American politician from the state of Florida
- William Powell (Canadian politician) (1907–1992), former mayor of Hamilton, Ontario
- William Powell (Conservative politician) (born 1948), former Member of Parliament in the United Kingdom
- Sir William Powell, 1st Baronet (1624–1680), English Member of Parliament for Herefordshire
- William Powell (Welsh politician), Welsh Liberal Democrat member of the National Assembly for Wales
- William F. Powell (1826–1889), political figure in Ontario, Canada
- William Powell (Virginia colonist) (died 1623), Virginia colonist, landowner, militia officer and politician
Military
- William G. Powell Marine Corps Brevet Medal recipient (1871–1955)
- William Henry Powell (general) (1825–1904), see List of American Civil War Generals (Union)
Musicians
- William Powell (singer) (1942–1977), lead vocalist of The O'Jays, Rock And Roll Hall Of Fame Inductee
- Billy Powell (1952–2009), American musician
Others
- William Dummer Powell (1755–1834), Chief Justice of Upper Canada
- William Powell (English actor) (1735–1769)
- William Henry Powell (1823–1879), American artist
- William Powell (author) (born 1949), author of The Anarchist Cookbook
- William S. Powell (born 1919), historian of North Carolina
- Alleged English name for Seminole fighter Osceola
- Bill Powell (golf course owner) (1916–2009), American businessman, entrepreneur, and pioneering golf course owner
- William Dillard Powell (1946–2005), executed by lethal injection
- William David Powell (1925–1968), American television writer
- William J. Powell (1897 - 1942), American civil aviator and author