William Small (1734–1775) was a professor of natural philosophy, College of William and Mary in Virginia.
William Small may also refer to: William Small (Wisconsin politician) (1824–1900), Scottish-born Wisconsin politician William Small (artist) (1843–1929), Scottish artist William Small (basketball), American basketball coach William Small (Scottish politician) (1909–1978), Scottish Labour Party politician William Small (trade unionist) (1845–1903), Scottish trade unionist William B. Small (trade unionist) (1872–1944), his son, Scottish trade unionist William B. Small (politician) (1817–1878), U.S. Representative from New Hampshire William N. Small (1927–2016), U.S. Navy admiral William J. Small (1926–2020), American television executive