Antoine François Marmontel (pronounced: [ɑ̃twan fʁɑ̃swa maʁmɔ̃tɛl]) (16 July 1816 – 16 January 1898) was a French pianist, teacher and musicographer.
Marmontel was born in Clermont-Ferrand. He entered the Paris Conservatory in 1827. His teachers were Pierre Zimmerman in pianoforte, Victor Dourlen in harmony, Jacques Fromental Halévy in fugue and Jean-François Le Sueur in composition. He achieved first prizes in theory of music and piano. In 1837, he became an assistant in theory of music at the Conservatory. In 1848 he succeeded Zimmerman as Professor of Keyboard at the Conservatory, beating his former teacher Charles-Valentin Alkan, and as a consequence derailing the latter's career. His memoir of his sometime colleague in his book 'Les pianistes célèbres' is nonetheless one of the most valuable sources for Alkan's biography.
Marmontel achieved renown as an effective and imaginative teacher. He had many pupils including Antoine Simon, Georges Bizet, Vincent d'Indy, Théodore Dubois, Dominique Ducharme, Gustave Gagnon, Ernest Guiraud, Émile Paladilhe, Edward MacDowell, Gabriel Pierné, Paul Rougnon, Paul Wachs, Louis Diémer, Francis Planté, André Wormser, Marguerite Long, and Claude Debussy. See: List of music students by teacher: K to M#Antoine François Marmontel.