William Fox may be:

• William Fox (New Zealand) (fl. 19th century), Prime Minister
• William Fox (producer) (1879-1952), founder of movie studio Fox Film Corporation
• William Fox Talbot (1800-1877), a pioneer of photography
• William Fox (England) (fl. 17th century), Paymaster of the Forces of England
• William Johnson Fox (1786-1864), British politician
• William Darwin Fox, English pioneer of the study of dinosaurs
• William Price Fox (born 1924), American novelist and essayist
• William M. Fox, American novelist
• William Thornton Rickert Fox (born 1912), professor

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