William Clarke (industrialist) (1831–1890), English industrialist, co-founder of Clarke Chapman Sir William Clarke, 1st Baronet (1831–1897), Australian businessman William Clarke (cryptographer) (1883–1961), British British intelligence officer and cryptographer William Francis Clarke (1816–1890), American Jesuit educator William P.O. Clarke (1893–1949), U.S. Navy admiral during World War II William Robinson Clarke (1895–1981), British World War I pilot who was the first black pilot to fly for Britain William Clarke (United Kingdom railway contractor), designer of British railway stations, see Portesham railway station Other uses William Clarke & Son, a tobacco company founded in 1830 in Cork, Ireland William Clarke Estate, a historic home in Orange Park, Florida William Clarke College, an Anglican co-educational high school in Kellyville, New South Wales, Australia See also William Clark (disambiguation) William Clerke (disambiguation) Willie Clarke (disambiguation) Will Clarke (disambiguation)