William Douglass may refer to:
William Douglass (abolitionist) (1804–1862), American abolitionist and church community leader William Douglass (engineer, born 1831) (1831–1923), engineer-in-chief for Trinity House and later for the Commissioners of Irish Lights William Douglass (engineer) (1857–1913), Chief Engineer for the Commissioners of Irish Lights William Douglass (physician) (1691–1752), physician and pamphleteer in Boston Bill Douglass (1923–1994), American jazz drummer Klondike Douglass (William Bingham Douglass, 1872–1953), American Major League Baseball player William Boone Douglass, lawyer, engineer, surveyor and genealogist
See also William Douglas (disambiguation)