Peter Buchanan may refer to:
Peter Buchanan (Royal Navy officer) (1925–2011) Peter Buchanan (architect) (1942–2023), architect, urbanist, writer and exhibition curator Peter Buchanan (footballer, born 1915) (1915–1977), Scottish football player (Chelsea FC, Fulham FC, Brentford FC, national team) Peter Buchanan (footballer, born 1938), Scottish football player and club president (Queen's Park) Peter Buchanan (judge) (1943–2014), judge of the Supreme Court of Victoria, Australia Peter Buchanan (rugby union) (1889–1957), rugby union player who represented Australia Peter Buchanan (jockey), Northern Irish jockey see 2011 Grand National Pete Buchanan, a character in Hollyoaks
See also Peter Buchanan-Smith (born 1972), designer, teacher and entrepreneur