William Collier may refer to:
William Collier Jr. (1902–1987), American actor William Collier Sr. (1864–1944), American writer, director and actor William Collier (colonist) (c. 1585–1671), English settler in Massachusetts William Collier (MP), MP for Truro, 1713–15, and manager of the Drury Lane Theatre William Collier (footballer) (1890–?), Scottish footballer, played for Scotland in 1922 William Miller Collier (1867–1956), American diplomat
See also William Collier Smithers (1795–1861), English author William Collyer (disambiguation), several people