Politicians:
* Bill Campbell (California politician)
* Bill Campbell (mayor) (b. 1953)
* Lord William Campbell (d. 1778), Governor of Nova Scotia (1766–73), the last British governor of South Carolina (1775).
* William Campbell (Canadian politician)
* William Campbell (jurist) (1758–1834), Chief Justice of the Supreme Court of Upper Canada.
* William Campbell (Lieutenant Governor of Nova Scotia)
* William Campbell (Texas politician)
* William B. Campbell (1807–1867), governor of Tennessee
* William Bennett Campbell, (b. 1943), former premier of Prince Edward Island, Canada.
* William W. Campbell (NY) (1806–1881), a U.S. Representative from New York
* William Wildman Campbell (1853–1927), a U.S. Congressman from Ohio
Others:
* Bill Campbell (baseball player) (b. 1948)
* Bill Campbell (CEO)
* Bill Campbell (comedian)
* Bill Campbell (rugby player) (b. 1961)
* Bill Campbell (sportscaster)
* Billy Campbell (b. 1959), American actor (mostly TV)
* William Campbell (Astrid member)
* William Campbell (film actor) (born 1926), American actor (''mostly'' film)
* William Campbell (general) (1745–1781), a Continental general of the American Revolutionary War.
* William Campbell (metallographer) (b. 1876)
* William Campbell (sailor), American Civil War sailor and Medal of Honor recipient
* William Campbell (settler) in Canterbury, New Zealand
* William Campbell (soldier), American Civil War soldier and Medal of Honor recipient
* William C. Campbell (b. 1923), American amateur golfer and former president of the USGA
* William H. Campbell (1808-1890), president of Rutgers College
* William Shears Campbell, a fictitious figure who was purported to have replaced Paul McCartney in The Beatles
* William Wallace Campbell (1862–1938), a U.S. astronomer
* William Wilfred Campbell, Canadian poet
Biography courtesy of the brilliant Wikipedia!
