William Simmons

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 Joseph Simmons (1880–1945), American founder of the second Ku Klux Klan
 * 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