William Washington (disambiguation)

William Washington (1752–1810), was an American cavalry officer

William Washington may also refer to


 * William Henry Washington (1813–1860), Whig Congressman from North Carolina
 * William D. Washington (1833–1870), American painter associated with the Virginia Military Institute
 * William Washington (baseball) (born 1885), American baseball catcher
 * William Washington (painter) (1885–1956), British painter