Le roi de Lahore ("The king of Lahore") is an opera in five acts by Jules Massenet to a French libretto by Louis Gallet. It was first performed at the Palais Garnier in Paris on 27 April 1877 in costumes designed by Eugène Lacoste and settings designed by Jean Émile Daran (Act I, scene 1), Auguste Alfred Rubé and Philippe Chaperon (Act I, scene 2; Act V), Louis Chéret (Act II), Jean-Baptiste Lavastre (Act III), Antoine Lavastre and Eugène Louis Carpezat (Act IV).