General Buchanan may refer to:
Ferdinand Buchanan (1888–1967), South African Army general Henry Buchanan (British Army officer) (1830–1903), British Army lieutenant general Jeffrey S. Buchanan (fl. 1980s–2010s), U.S. Army lieutenant general Kenneth Buchanan (1880–1973), British Army major general Robert C. Buchanan (1811–1878), U.S. Army brevet major general