John Buchanan (disambiguation)
John Buchanan (born 1931) was Premier of Nova Scotia, 1978–1990.
John Buchanan may also refer to:
- John Buchanan (American politician), American journalist and U.S. presidential candidate, 2004
- John Buchanan (biologist) (died 2007), professor of biochemistry at the Massachusetts Institute of Technology
- John Buchanan (botanist) (1819–1898), New Zealand botanist and scientific artist
- John Buchanan (cricketer, born 1887) (died 1969), English cricketer and decorated WWI officer
- John Buchanan (cricketer, born 1953), Australian cricketer and coach
- John Buchanan (Cambuslang footballer) (fl. 1889), Scottish footballer
- Jock Buchanan (footballer) (1899–1947), Scottish footballer (Rangers)
- John Buchanan (footballer, born 1928), Scottish footballer (Clyde)
- John Buchanan (footballer, born 1935) (died 2009), Scottish footballer (Hibernian)
- John Buchanan (footballer, born 1951), Scottish footballer (Cardiff City, Northampton Town)
- John Buchanan (inventor), Australian inventor of the atmospheric diving suit
- John Buchanan (judoka) (born 1975), British judoka
- John Buchanan (pastor), pastor of the Fourth Presbyterian Church of Chicago
- John Buchanan (sailor) (1884–1943), British Olympic gold medalist in 1908
- John Buchanan (settler) (1855–1896), Scottish agriculturalist and early colonial settler in Nyasland
- John Buchanan (soccer), former Canadian soccer coach, in Canadian Soccer Hall of Fame
- John Buchanan (New Zealand politician) (1819–1892), New Zealand politician
- John Buchanan (MP) (1761–1839), Scottish politician, MP for Dunbartonshire 1821–26
- John A. Buchanan (1843–1921), US House of Representatives member
- John Alexander Buchanan (1887–1976), Canadian Senator
- John Andrew Buchanan (born 1863), judge and politician in Astoria in the U.S. state of Oregon
- John C. Buchanan, businessman in 1840s San Francisco
- John C. Buchanan (Texas politician), Texas state senator, 1879–1885, see Eighteenth Texas Legislature
- John Clark Buchanan, bishop in Episcopal Diocese of Southern Virginia
- John Hall Buchanan, Jr. (born 1928), US House of Representatives member from Alabama
- John Lee Buchanan (1831–1922), second president of Virginia Tech (then Virginia Agricultural and Mechanical College)
- John P. Buchanan (1847–1930), Governor of Tennessee
- John Murdoch Buchanan, businessman and Chancellor of the University of British Columbia
See also
- James Buchanan ("John" Buchanan is a common misreference to this US president)