William Steere may refer to:
William C. Steere Jr. (born 1936), chief executive officer of Pfizer William C. Steere (1907–1989), American botanist William Steere (priest) (died 1638), Irish Anglican priest
See also William Steer (1888–1969), English amateur footballer William Bridgland Steer (1867–1939), British trade unionist and politician