Walter John "Jack" Buchanan (2. april 1891 – 20. oktobar 1957) bio je škotski kazališni i filmski glumac, pjevač, producent i režiser, koji je izgradio reputaciju na britanskim pozornicama tumačeći likove bonvivana. Široj publici je poznat po ulozi u klasičnom hollywoodskom mjuziklu The Band Wagon iz 1953.

Buchanan se školovao zajedno sa škotskim inženjerom i televizijskim pionirom Johnom Logiejem Bairdom, kome je 1920-ih financijski pomagao za vrijeme njegovih eksperimenata sa mehaničkom televizijom.

• Auld Lang Syne (1917)
• Her Heritage (1919)
• The Audacious Mr. Squire (1923)
• The Happy Ending (1925)
• Bulldog Drummond's Third Round (1925)
• Settled Out of Court (1925)
• A Typical Budget (1925)
• Confetti (1928)
• Toni (1928)
• Paris (1929)
• Monte Carlo (1930)
• A Man of Mayfair (1931)
• Good Night, Vienna (1932)
• Yes, Mr Brown (1933)
• That's a Good Girl (1933)
• Brewster's Millions (1935)
• Come Out of the Pantry (1935)
• This'll Make you Whistle (1936)
• When Knights Were Bold (1936)
• Smash and Grab (1937)
• The Sky's the Limit (1938)
• Break the News (1938)
• Alias the Bulldog (1939)
• Bulldog Sees It Through (1939)
• The Gang's All Here (1939)
• The Middle Watch (1940)
• The Band Wagon (1953)
• Josephine and Men (1955)
• As Long as They're Happy (1955)

• Jack Buchanan (I) na sajtu IMDb
• Jack Buchanan's biography at Helensburgh Heroes Arhivirano 2014-02-01 na Wayback Machine-u
• Photographs and literature
• „Jack Buchanan”. Theatre & Performance. Victoria and Albert Museum. Arhivirano iz originala na datum 2011-04-13. Pristupljeno 24. III 2011.