Admiral Williams may refer to:
United Kingdom Charles Williams (Royal Navy officer) (1925–2015), British Royal Navy rear admiral David Williams (Royal Navy officer) (1921–2012), British Royal Navy admiral Hugh Pigot Williams (1858–1934), British Royal Navy vice admiral Simon Williams (Royal Navy officer) (fl. 1970s–2020s), British Royal Navy rear admiral Thomas Williams (Royal Navy officer) (1761/1762–1841), British Royal Navy admiral
United States Clarence Stewart Williams (1863–1951), U.S. Navy admiral; commander in chief of the U.S. Asiatic Fleet 1925–1927 Duvall Williams (born 1943), U.S. Navy rear admiral George Washington Williams (naval officer) (1869–1925), U.S. Navy rear admiral J. D. Williams (admiral) (born 1935), U.S. Navy vice admiral John G. Williams Jr. (1924–1991), U.S. Navy admiral Melvin Williams (admiral) (born 1955), U.S. Navy vice admiral R. C. Williams (1888–1984), U.S. Public Health Service rear admiral
See also William Peere Williams-Freeman (1742–1832), British Royal Navy admiral