William Simmons may refer to:
William Henry Simmons (1811–1882), English mezzotint engraver William Benjamin Dearborn Simmons (1823–1876), American organ builder William A. Simmons (1840–1916), American government official William J. Simmons (teacher) (1849–1890), American ex-slave and college president William Simmons (politician) (1865–1956), Canadian politician William Taylor Simmons (1872–?), American schoolteacher and Mississippi state legislator William Joseph Simmons (1880–1945), American founder of the second Ku Klux Klan Will Simmons (1884–1949), American painter William Simmons (athlete) (1903–?), English athlete William W. Simmons (executive) (1912–1997), American IBM executive William J. Simmons, see List of World War II aces from the United States William W. Simmons (physicist) (born 1932), American physicist William Simmons (anthropologist) (1938–2018), American anthropologist William Mark Simmons (born 1953), American fantasy and horror novelist William T. Simmons, United States Army officer and Medal of Honor recipient Bill "El Wingador" Simmons (born 1961), American competitive eater Bill Simmons (born 1969), American sports columnist
See also William S. Simmons Plantation, a historic house in Cave Spring, Georgia, United States Billy Simmonds (born 1980), Australian entrepreneur, martial artist, and bodybuilder Willie Simmons (disambiguation) Billy Simmons (c. 1780–c. 1860), African-American Jew from Charleston, South Carolina