I due Foscari is an opera in three acts by Giuseppe Verdi to an Italian libretto by Francesco Maria Piave, based on the 1821 historical play, The Two Foscari by Lord Byron.

Giuseppe Fortunino Francesco Verdi was an Italian composer best known for his operas. He was born near Busseto to a provincial family of moderate means, receiving a musical education with the help of a local patron, Antonio Barezzi. Verdi came to dominate the Italian opera scene after the era of Gioachino Rossini, Vincenzo Bellini, and Gaetano Donizetti, whose works significantly influenced him.