Julian Percy Thornton-Duesbery (7 September 1902 – 1 April 1985) was a British Church of England priest and academic. He was Master of St Peter's Hall, Oxford (later known as St Peter's College) from 1940 to 1944, and from 1955 to 1968. He also served as Principal of Wycliffe Hall, Oxford, an Anglican theological college, from 1944 to 1955.