Jacques Delamain was a French naturalist who specialised in ornithology. He was, from 1929, on the editorial committee of Alauda, Revue internationale d'Ornithologie with its founder Paul Paris and Louis Lavauden, Noël Mayaud, Henri Heim de Balsac, Jacques de Chavigny, Henri Jouard and Paul Poty. Delamain's book Why Birds Sing was published in French in 1928; an English translation by Ruth and Anna Sarason was published in 1932.