Jacques Delamain (10 September 1874, Jarnac – 5 February 1953, Saint-Brice, Charente) was a French naturalist who specialised in ornithology. He was, from 1929, on the editorial committee of Alauda, Revue internationale d'Ornithologie  [fr] with its founder Paul Paris and Louis Lavauden, Noël Mayaud, Henri Heim de Balsac, Jacques de Chavigny, Henri Jouard and Paul Poty. He wrote Why Birds Sing, which was translated to English by Ruth and Anna Sarason, and published in 1932.