William Strong may refer to:
William Barstow Strong (1837–1914), American railroad executive William Duncan Strong (1899–1962), American archaeologist and anthropologist William Emerson Strong (1840–1891), brigadier general during the American Civil War William G. Strong (1819–?), merchant and political figure in Prince Edward Island William Kerley Strong (1805–1867), brigadier general during the American Civil War William Lafayette Strong (1827–1900), 90th mayor of New York City William Strong (priest, died 1654), English clergyman William Strong (archdeacon of Northampton) (1756–1842) William Strong (Vermont politician) (1763–1840), member of the United States House of Representatives from Vermont William Strong (Pennsylvania jurist) (1808–1895), U.S. Supreme Court judge who also served on the Supreme Court of Pennsylvania and as a U. S. congressman William Strong (Oregon judge) (1817–1887), American judge on the Oregon Supreme Court and Washington Supreme Court William Strong (Kentucky politician) (born 1943), member of the Kentucky House of Representatives