Simon Boccanegra (Italian: [siˈmom ˌbokkaˈneːɡra]) is an opera with a prologue and three acts by Giuseppe Verdi to an Italian libretto by Francesco Maria Piave, based on the play Simón Bocanegra (1843) by Antonio García Gutiérrez, whose play El trovador had been the basis for Verdi's 1853 opera, Il trovatore.

Librettist Francesco Maria Piave (Based on the play "Simón Bocanegra" by Antonio García Gutiérrez)
Date of composition 1857
Premiered 1857, March 12th in Venise, Metropolitan City of Venice, Italy
Type Opera
Approx. duration 140 minutes
Spoken language Italian
Instruments Voice (Baritone) - Simon Boccanegra, corsaro al servizio della Repubblica genovese; poi primo Doge di Genova (a corsair, later the first Doge of Genoa)
Voice (Bass) - Jacopo Fiesco, nobile genovese; poi sotto il nome di Andrea Grimaldi (a Genoese nobleman, known as Andrea Grimaldi)
Voice (Soprano) - Maria Boccanegra, figlia di Simone, sotto il nome di Amelia Grimaldi (Simon's daughter, known as Amelia Grimaldi)
Voice (Tenor) - Gabriele Adorno, gentiluomo genovese (a Genoese gentleman)
Voice (Baritone) - Paolo Albiani, filatore d'oro genovese; poi cortigiano favorito del Doge (a goldsmith and the Doge's favourite courtier)
Voice (Bass) - Pietro, popolano di Genova; poi cortigiano (a Genoese popular leader and courtier)
Voice (Tenor) - Capitano dei balestrieri (Captain of the Crossbowmen)
Voice (Mezzo-Soprano) - Un'Ancella di Amelia (Amelia's maid)
Chorus/Choir - Soldiers, sailors, people, senators, the Doge's court, prisoners
Orchestra
Arrangements Franz Liszt: Réminiscences de Boccanegra, S. 438
Autotranslations beta Giuseppe Verdi: Simon Boccanegra
Giuseppe Verdi: Simon Boccanegra
Giuseppe Verdi: Simon Boccanegra