Philipp Jarnach (26 July 1892 – 17 December 1982) was a composer of modern music. Jarnach was born in Noisy-le-Sec, France, the son of a Spanish sculptor and a Flemish mother. Until 1914 he lived in Paris, where he studied piano under Édouard Risler and harmony under Albert Lavignac at the Conservatoire de Paris. During the First World War he was a student of Ferruccio Busoni in Zürich. He later completed the opera Doktor Faust which Busoni had left unfinished on his death in 1924.