William or Bill Buchanan may refer to: William Buchanan (Manitoba politician) (1865–1944), Irish-born Canadian Conservative politician William Buchanan (locomotive designer) (1830–1910), designed trains for the New York Central William Buchanan (pastoralist) (1824–1911), Australian pastoralist and gold prospector William Buchanan (footballer) (1911–1985), Scottish amateur footballer William Buchanan (art dealer) (1777–1864), British art dealer William Izett Buchanan (born 1972), American expatriate basketball player William I. Buchanan (1853–1909), American diplomat William Ashbury Buchanan (1876–1954), journalist, publisher and politician based in Alberta William Murdoch Buchanan (1897–1966), Canadian politician and dentist Bill Buchanan (24), a fictional character in 24 Bill Buchanan (computer scientist) (born 1961), Scottish computer scientist Bill Buchanan (songwriter) (1930–1996), American songwriter Billy Buchanan (1924–1999), Scottish footballer with Carlisle United and Barrow