Walter John Buchanan (2 April 1890 - 20 October 1957) was a British theatre and film actor, singer, dancer, producer and director.

Born to a comfortable middle-class family in Scotland, Buchanan attempted to follow his father into auctioneering, but conceived a strong desire to be a performer. After a calamitous début as a stand-up comic, he moved to London and between 1912 and 1917 built up a performing career in the chorus or small parts in musical comedies before achieving leading