Sir Arthur Llewellyn Armitage (1 August 1916 – 1 February 1984), was a British academic who was the President of Queens' College, Cambridge, from 1958 until 1970, Vice-Chancellor of Cambridge University between 1965–67 and Vice-Chancellor of Victoria University of Manchester between 1969 and 1980.

Born in Marsden, West Yorkshire, Armitage was educated at Hulme Grammar School and in 1933 went to Queens' College, Cambridge, where he gained a first class degree in Law.

After he spent two years at Yale on a Commonwealth Fund Fellowship and was called to the Bar in Inner Temple 1940.

He served for five years in the Army during the Second World War, achieving the rank of Major.

In his later years, Armitage chaired a series of government committees under James Callaghan and Margaret Thatcher, including the Social Security Advisory Committee; the Armitage Committee, set up to review the rules governing the political activities of civil servants; and an independent inquiry into lorries and their effect on people and the environment.