William Shea (1907–1991) was an American lawyer and baseball league founder.
William Shea may also refer to:
William Shea (actor) (1856–1918), British actor William A. Shea (mayor), American politician William J. Shea (1900–1965), justice of the Connecticut Supreme Court William T. Shea (1930–2024), American politician
See also William O'Shea (1840–1905), Irish soldier and Member of Parliament William O'Shea (boxer) (fl. 1920s), Irish Olympic boxer William Shay, namesake of the William Shay Double House in New Hamburg, New York