Le roman d'Elvire is an opéra comique in three acts composed by Ambroise Thomas to a libretto by Alexandre Dumas (père) and Adolphe de Leuven.

[a] His collaborator was Adolphe de Leuven who had co-written the librettos of four earlier operas composed by Thomas, all of them in the opéra comique genre.

The Théâtre Impérial de l'Opéra-Comique premiered Le roman d'Elvire on 4 February 1860 with Achille-Félix Montaubry and Mademoiselle Monrose in the lead roles of Gennaro and Elvire.

To exact her revenge, Elvire conceives the idea of passing herself off as an old woman via the magic potions provided by Lilla, a gypsy fortune-teller.

At this proof of his love and reformed ways, Elvire reveals the truth of what has happened and the couple are set to live happily ever after.