Marino Faliero is a tragedia lirica, or tragic opera, in three acts by Gaetano Donizetti. Giovanni Emanuele Bidera wrote the Italian libretto, with revisions by Agostino Ruffini, after Casimir Delavigne's play. It is inspired by Lord Byron's drama Marino Faliero (1820) and based on the life of Marino Faliero (c.1285-1355), the Venetian Doge.

Domenico Gaetano Maria Donizetti was an Italian composer, best known for his almost 70 operas. Along with Gioachino Rossini and Vincenzo Bellini, he was a leading composer of the bel canto opera style during the first half of the nineteenth century and a probable influence on other composers such as Giuseppe Verdi. Donizetti was born in Bergamo in Lombardy. At an early age he was taken up by Simon Mayr who enrolled him with a full scholarship in a school which he had set up. There he received detailed musical training. Mayr was instrumental in obtaining a place for Donizetti at the Bologna Academy, where, at the age of 19, he wrote his first one-act opera, the comedy Il Pigmalione, which may never have been performed during his lifetime.