Francis Campbell Boileau Cadell RSA (12 April 1883 – 6 December 1937) was a Scottish Colourist painter, renowned for his depictions of the elegant New Town interiors of his native Edinburgh, and for his work on Iona.

From October 2011 - March 2012 the Scottish National Gallery of Modern Art held a major solo retrospective of Cadell's work, the first since that held at the National Gallery of Scotland in 1942.

From the age of 16 Cadell studied in Paris at the Académie Julian, where he was in contact with the French avant-garde of the day.

While in France, his exposure to work by the early Fauvists, and in particular Matisse, proved to be his most lasting influence.

After his return to Scotland, he was a regular exhibitor in Edinburgh and Glasgow, as well as in London.