Geoffrey Francis Allen (25 August 1902 – 8 November 1982) was the third Bishop of Derby. Allen was educated at Dulwich College and University College, Oxford, and after training at Ripon Hall was ordained in 1927. Following a brief curacy at St Saviour's, Liverpool, he was Chaplain of his old theological college, a Fellow of Lincoln College, Oxford, Lecturer at Union Theological College, Canton, the Deputy Provost of St Philip's Cathedral, Birmingham and then Archdeacon of Birmingham, 1944–47.