William Eddy may refer to:
William Eddy (politician) (1865–1926), Australian politician William A. Eddy (1896–1962), U.S. minister to Saudi Arabia William Abner Eddy (1850–1909), American accountant and journalist William C. Eddy (1902–1989), American inventor William F. Eddy (1852–?), Canadian businessman, Mayor of Regina
See also William Ede (disambiguation)