Les Troyens (in English: The Trojans) is a French grand opera in five acts by Hector Berlioz. The libretto was written by Berlioz himself from Virgil's epic poem the Aeneid; the score was composed between 1856 and 1858. Les Troyens is Berlioz's most ambitious work, the summation of his entire artistic career, but he did not live to see it performed in its entirety. Under the title Les Troyens Carthage, the last three acts were premièred with many cuts by Léon Carvalho's company, the Théâtre Lyrique, at their theatre (now the Théâtre de la Ville) on the Place du Châtelet in Paris on 4 November 1863, with 21 repeat performances.

Original Name Les Troyens
Librettist Hector Berlioz (Based on "Aeneid" by Virgil)
Date of composition 1858 (1856-1858)
Premiered 1863, November 4th in Paris, France
Type Opera
Catalogue H 133
Approx. duration 240 minutes
Spoken language French
Instruments Voice (Bass) - Priam, roi des troyens/Fantôme de Priam (King of Troy)
Voice (Soprano) - Hécube, reine de Troie (Queen of Troy)
Voice (Mezzo-Soprano) - Cassandre, leur fille, prophétesse de Troie/Fantôme de Cassandre (Trojan prophetess, daughter of Priam)
Voice (Tenor) - Helenus, fils de Priam, prêtre troyen (Trojan priest, son of Priam)
Voice (Soprano) - Polyxène, fille de Priam, sœur de Cassandre (sister of Cassandra)
Voice (Baritone) - Chorèbe, un jeune prince d’Asie Mineure, fiancé à Cassandre/Fantôme de Chorèbe (a young prince from Asia, betrothed to Cassandra)
Voice (Tenor) - Énée, prince troyen, fils Vénus et Anchise (Trojan hero, son of Venus and Anchises)
Voice (Soprano) - Ascagne, son fils (Aeneas' young son)
Voice (Bass) - Panthée, un prêtre troyen (Trojan priest, friend of Aeneas)
Voice (Bass) - Fantôme d’Hector (Ghost of Hector, Trojan hero, son of Priam)
Silent Role - Andromaque, veuve d’Hector (Hector's widow)
Silent Role - Astyanax, fils d’Hector et Andromaque (Andromaque's son)
Narrator, Recitant, Speaker - Le Rapsode, narrator of the Prologue
Voice (Mezzo-Soprano) - Didon, reine de Carthage, veuve de Sychée (Queen of Carthage, widow of Sychaeus, prince of Tyre)
Voice (Contralto) - Anna, sœur de Didon (Dido's sister)
Voice (Bass) - Narbal, ministre de Didon (minister to Dido)
Voice (Tenor) - Iopas, poète à la cour de Didon (Tyrian poet to Dido's court)
Voice (Tenor) - Hylas, un jeune marin phrygien (a young Phrygian sailor)
Voice (Bass) - Mercure, messager des dieux (Mercury, a God)
Voice (Baritone) - Deux soldats troyens (Two Trojan soldiers)
Chorus/Choir - Troyens, Grecs, Tyriens et Carthaginois, etc. (Trojans, Greeks, Tyrians and Carthaginians; Nymphs, Satyrs, Fauns, and Sylvans; Invisible spirits)
Orchestra
Arrangements Hector Berlioz: Marche troyenne, H 133b
Autotranslations beta Hector Berlioz: The Trojans, H 133
Hector Berlioz: The Trojans, H 133
Hector Berlioz: The Trojans, H 133