William Bush may refer to:
William Ernest Bush (died 1903), first and last Baron Freiherr von Bush of Coburg-Gotha William Henry Bush (1849–1931), American businessman and rancher William Sharp Bush (1786–1812), United States Marine Corps officer who was killed on the USS Constitution during the War of 1812 William H. T. Bush (1938–2018), American businessperson William McKeeva Bush, first Premier of the Cayman Islands William Bush (cricketer) (1883–1959), New Zealand cricketer William Owen Bush (1832–1907), American farmer and politician in Washington state William Bush IV, American politician and member of the Delaware House of Representatives William E. Bush (1936–2001), American politician in New York Billy Bush (born 1971), American television personality Billy Bush (record producer), American record producer Billy "Green" Bush (born 1935), American actor Bill Bush (born 1949), New Zealand rugby union player