Teatro La Fenice is a historic opera house in Venice, Italy. It is one of "the most famous and renowned landmarks in the history of Italian theatre" and in the history of opera as a whole. Especially in the 19th century, La Fenice became the site of many famous operatic premieres at which the works of several of the four major bel canto era composers—Rossini, Bellini, Donizetti, and Verdi—were performed.

Semiramide is an opera in two acts by Gioachino Rossini. The libretto by Gaetano Rossi is based on Voltaire's tragedy Semiramis, which in turn was based on the legend of Semiramis of Assyria. The opera was first performed at La Fenice in Venice on 3 February 1823.