The Devil's Brother or Fra Diavolo outside the U.S. is a 1933 American Pre-Code comedy film starring Laurel and Hardy. It is based on Daniel Auber's operetta Fra Diavolo about the Italian bandit Fra Diavolo.

Fra Diavolo, ou L'hôtellerie de Terracine is an opéra comique in three acts by the French composer Daniel Auber, from a libretto by Auber's regular collaborator Eugène Scribe. It is loosely based on the life of the Itrani guerrilla leader Michele Pezza, active in southern Italy in the period 1800-1806, who went under the name of Fra Diavolo.