Sir Charles Malcolm Barclay-Harvey, KCMG (2 March 1890 – 17 November 1969) was a British politician and Governor of South Australia from 12 August 1939 until 26 April 1944. The only child of James Charles Barclay-Harvey, of Dinnet House, Aberdeenshire, he was educated at Eton and at Christ Church, Oxford, and served in the 7th (Deeside Highland) Battalion of the Gordon Highlanders from 1909 to 1915, with the Home Staff from 1915 to 1916, with the Ministry of Munitions in London from 1916 to 1918 and in Paris from 1918 to 1919.