William Dunlap (1766–1839) was a pioneer of American theater.
William Dunlap may also refer to:
William Dunlap Simpson (1823–1890), Governor of South Carolina William Claiborne Dunlap (1798–1872), U.S. Representative from Tennessee William R. Dunlap (born 1944), American artist, arts commentator and educator William B. Dunlap (fl. 1870s–1890s), former Democratic member of the Pennsylvania State Senate Bill Dunlap (William James Dunlap, 1909–1980), Major League Baseball player
See also Bill Dunlop (born 1963), Canadian boxer