Marios Varvoglis (Greek: Μάριος Βάρβογλης; 10 December 1885 – 30 July 1967) was a Greek composer.
Varvoglis was born in Brussels. He studied music at the Conservatoire de Paris and the Schola Cantorum with Leroux, Georges Caussade, d'Indy and others. He remained in Montparnasse, Paris until 1922 and he maintained close relations with artistic circles that included Casella, Ravel, Varèse and Modigliani, whose last painting was a portrait of Varvoglis. After 1920 he taught at the Athens Conservatory and he became active as a music critic and conductor. He was persecuted for his liberal political views and he was imprisoned in a British concentration camp during the Dekemvriana
He died in Athens.