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), judge of the Supreme Court of Victoria, Australia
• Peter Buchanan (rugby union) (1889–?), rugby union player who represented Australia
• Pete Buchanan, a character in Hollyoaks

See also[edit]

• Peter Buchanan-Smith (born 1972), designer, teacher and entrepreneur