William MacLean may refer to:
William Findlay Maclean (1854–1929), Canadian politician William Ross MacLean (1872–1931), Canadian soda water manufacturer and political figure in British Columbia William N. MacLean (1907–1997), Canadian politician William Q. MacLean Jr. (1934–2026), American politician in Massachusetts Billy Joe MacLean (1936–2025), Canadian politician
See also William McLean (disambiguation) William McClean (1842–?), Barbadian cricketer Will Maclean, Scottish artist and professor of art