Roger Désormière (French pronunciation: [ʁɔʒe dezɔʁmjɛːʁ]; 13 September 1898 – 25 October 1963) was a French conductor.
Désormière was born in Vichy in 1898. He studied at the Paris Conservatoire, where his professors included Philippe Gaubert (flute), Xavier Leroux and Charles Koechlin (composition), and Vincent d'Indy (conducting). In 1922 he won the Prix Blumenthal and in 1923 became part of the Ecole d’Arcueil.
Désormière’s early conducting experience was largely with the Ballets suédois and Sergei Diaghilev's Ballets Russes. He was conductor of the Ballets suédois's premiere of Relâche (1924), a film and music presentation by Francis Picabia and Erik Satie, with the film segment, Entr'acte, directed by René Clair. He then worked for the Diaghilev company from 1925 until the impresario's death, conducting the premieres of Barabau by Vittorio Rieti, The Prodigal Son and Le pas d'acier by Sergei Prokofiev, and La Chatte by Henri Sauguet.
From 1932 he became involved in music for films with Pathé-Nathan, composing music for La Règle du jeu, Le Mariage de Chiffon, and Le Voyageur de la Toussaint. He also conducted the orchestra in over 20 other films, such as Partie de campagne, Remorques, La Belle et la bête, and La Beauté du diable.