Sir Andrew Ryan KBE CMG (5 November 1876 – 31 December 1949) was a British diplomat.
He was educated at the Christian Brothers College, Cork, and at Queen's College, Cork, where he graduated BA in Greek and Latin from the Royal University of Ireland, and then proceeded to Emmanuel College, Cambridge, where from 1897 to 1899 he trained as an interpreter on a course run for the consular department of the British Foreign Office, studying Arabic, Turkish, and law.
[4] In 1913 Ryan married Ruth Margaret van Millingen of Dunblane, Perthshire.
[5][4] His sister Mary Ryan was the first woman to become a professor in Great Britain or Ireland.
His brother Sir Thomas Ryan (1879–1934) worked in the Indian Civil Service, and a younger brother was the Dominican priest Patrick Finbar Ryan OP, Archbishop of Port of Spain, Trinidad.