Orazi e Curiazi (The Horatii and the Curiatii) is an opera by the Italian composer Saverio Mercadante. It takes the form of a tragedia lirica in three acts. The libretto, by Salvadore Cammarano, is based on the Roman legend of the fight between Horatii and Curiatii. It was first performed at the Teatro San Carlo, Naples, on 10 November 1846.