Henri Meilhac was a French dramatist and opera librettist, best known for his collaborations with Ludovic Halévy on Georges Bizet's Carmen and on the works of Jacques Offenbach, as well as Jules Massenet's Manon.

A libretto is the text used in, or intended for, an extended musical work such as an opera, operetta, masque, oratorio, cantata or musical. The term libretto is also sometimes used to refer to the text of major liturgical works, such as the Mass, requiem and sacred cantata, or the story line of a ballet.