William Willson may refer to:
William H. Willson (1805–1856), pioneer of the U.S. state of Oregon William Willson (businessman) (1927–2003?), chairman of Aston Martin, 1972–1975 William Gore Willson (1882–1953), Canadian politician William David Willson (1865–1932), political figure in British Columbia
See also Robert William Willson, English Roman Catholic bishop William Wilson (disambiguation)