Sir Compton Mackenzie, OBE (; 17 January 1883 – 30 November 1972) was a prolific writer of fiction, biography, histories, and memoir, as well as a cultural commentator, raconteur, and lifelong Scottish nationalist. He was one of the co-founders in 1928 of the Scottish National Party along with Hugh MacDiarmid, RB Cunninghame Graham and John MacCormick.