William Powell (disambiguation)
William Powell is the name of the following people:
- William Powell, 1st Baronet (around 1624–1680), English nobleman and politician
- William Powell (1892–1984), American actor
- William Powell (singer) (1942–1977), American singer
- William Powell (politician, II) , British politician (Welsh Liberal Democrats)
- William Bramwell Powell (1836–1904), American educator
- William Edward Powell (1788–1865), British politician
- William Henry Powell (1823–1879), American painter
- William Henry Powell (Brigadier General) (1825–1904), American Brigadier General
- William Norris Powell (1952-2009), American keyboardist, see Billy Powell
