William Castle (disambiguation)
# William Castle (disambiguation)

William Castle (1914–1977) was an American film director, producer, and actor.

William Castle may also refer to:

* William Castle (shipbuilder) (c. 1615-1681) English shipbuilder for the Royal Navy
* William Castle (tenor) (1836–1909), English tenor active in the United States
* William B. Castle (1814–1872), American politician from Ohio
* William Bosworth Castle (1897–1990), American physician and physiologist
* William E. Castle (1867–1962), American geneticist
* William Richards Castle (1849–1935), lawyer, politician and Attorney General of Hawaii
* William Richards Castle Jr. (1878–1963), U.S. educator, diplomat and ambassador to Japan
