Roméo et Juliette is an opera in five acts by Charles Gounod to a French libretto by Jules Barbier and Michel Carré, based on Romeo and Juliet by William Shakespeare. It was first performed at the Théâtre Lyrique, Paris on 27 April 1867. This opera is notable for the series of four duets for the main characters and the waltz song "Je veux vivre" for the soprano.

The Théâtre Lyrique was one of four opera companies performing in Paris during the middle of the 19th century. The company was founded in 1847 as the Opéra-National by the French composer Adolphe Adam and renamed Théâtre Lyrique in 1852. It used four different theatres in succession, the Cirque Olympique, the Théâtre Historique, the Salle du Théâtre-Lyrique, and the Salle de l'Athénée, until it ceased operations in 1872.