Sigismondo is an operatic 'dramma' in two acts by Gioachino Rossini to an Italian libretto by Giuseppe Maria Foppa. The opera was not a success and Rossini later re-used some of its music in "Elisabetta, regina d'Inghilterra", "The Barber of Seville", and "Adina".
Sigismondo d'India (c. 1582 – before 19 April 1629) was an Italian composer of the late Renaissance and early Baroque eras. He was one of the most accomplished contemporaries of Monteverdi, and wrote music in many of the same forms as the more famous composer.