Maurice Delage (13 November 1879 – 21 September 1961) was a French composer and pianist.
Delage was born and died in Paris. He first worked as a clerk for a maritime agency in Paris, and later as a fishmonger in Boulogne. He also served for a time in the French army, before embarking on a music career in his twenties. A student of Ravel, who proclaimed him one of the supreme French composers of his day, and member of Les Apaches, he was influenced by travels to India and Japan in 1912, when he accompanied his father on a business trip. Ravel's "La vallée des cloches" from Miroirs was dedicated to Delage.
Delage's best known piece is Quatre poèmes hindous (1912–1913). His Ragamalika (1912–1922), based on the classical music of India, is significant in that it calls for prepared piano; the score specifies that a piece of cardboard be placed under the strings of the B-flat in the second line of the bass clef to dampen the sound, imitating the sound of an Indian drum.