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
- Pete Buchanan, a character in Hollyoaks
See also
edit- Peter Buchanan-Smith (born 1972), designer, teacher and entrepreneur