René Dumesnil (19 June 1879 – 24 December 1967) was a French physician, literary critic and musicologist.
Dumesnil studied literature at the Sorbonne and became a literary critic.
Then he was music critic for Le Mercure de France and Le Monde.
He was elected a member of the Académie des beaux-arts in 1965.
In addition to his publications in literature (numerous studies on Flaubert, Maupassant and realism, he has written a number of books on music.
Dumesnil won four prizes awarded by the Académie française.