Samson et Dalila (English: Samson and Delilah), Op. 47, is a grand opera in three acts and four tableaux by Camille Saint-Sans to a French libretto by Ferdinand Lemaire. It was first performed at the Grossherzogliches (Grand Ducal) Theater (now the Staatskapelle Weimar) in Weimar on 2 December 1877 in a German translation.