Robert le diable (Robert the Devil) is an opera in five acts composed by Giacomo Meyerbeer between 1827 and 1831, to a libretto written in French by Eugène Scribe and Germain Delavigne. Robert le diable is regarded as one of the first grand operas at the Paris Opéra. It has only a superficial connection to the medieval legend of Robert the Devil.
The opera was immediately successful from its first night on 21 November 1831 at the Opéra; the dramatic music, harmony and orchestration, its melodramatic plot, its star singers and its sensational stage effects compelled Frédéric Chopin, who was in the audience, to say, "If ever magnificence was seen in the theatre, I doubt that it reached the level of splendour shown in Robert...It is a masterpiece...Meyerbeer has made himself immortal".