Martin Cyril D'Arcy SJ (15 June 1888 – 20 November 1976) was a Roman Catholic priest, philosopher of love, and a correspondent, friend, and adviser of a range of literary and artistic figures including Evelyn Waugh, Dorothy L. Sayers, W. H. Auden, Eric Gill and Sir Edwin Lutyens. He has been described as "perhaps England's foremost Catholic public intellectual from the 1930s until his death".