Benvenuto Cellini is an opera in two acts by Berlioz, with libretto by Léon de Wailly and Henri Auguste Barbier. The first of his operas, it is loosely based on the memoirs of the Florentine sculptor Benvenuto Cellini. It is technically very challenging and not part of the standard operatic repertoire. However, the overture to the opera features in symphony orchestra programs, as well as the concert overture Le carnaval romain that Berlioz composed from material in the opera.