William Sims (1858–1936), was an admiral in the United States Navy.
William Sims may also refer to:
Politics William Edward Sims (1842–1891), American politician William H. Sims (American politician) (1837–1920), American politician in Mississippi William Henry Sims (1872–1955), Canadian politician in Manitoba
Others William Dillwyn Sims (1825–1895), English industrialist and artist William Sims (engineer), pioneer of the Cornish engine William L. Sims II (1896–1977), American businessman William Sims (American football) (b. 1970), American football linebacker
See also Willie Sims (disambiguation) William Simms (disambiguation)