William Power
William Power may refer to:
Australia
- Bill Power (Australian politician), member of the Queensland Legislative Assembly
- William Grene Power, member of the Queensland Legislative Council
- Will Power, Australian motorsport racer
- Bill Power (footballer), Australian rules footballer who played with South Melbourne
- Billy Power (footballer), Australian rules footballer who played with Footscray
Canada
- William Power (Canadian politician), member of the Canadian House of Commons
- William Gerard Power, his son, Canadian politician in Quebec
- William Power (Quebec judge), judge and political figure in Lower Canada
- William Edward Power, Roman Catholic Bishop of Antigonish, 1960–1986
- William Patrick Power, Canadian priest and head of Duquesne University
United Kingdom
- William Power (Scottish politician), leader of the Scottish National Party
- William Henry Power, Chief Medical Officer of England
- William Power, member of the Birmingham Six
United States
- William Patrick Power, first rector of the Pittsburgh Catholic College
- Will Power (performer), American actor, rapper and playwright
- Bill Power (outlaw), member of the Dalton Gang