Zazà

thumb|Cover of piano score, 1919|alt=cover with ornamental lettering and image of young woman in early 20th century evening costume, with elaborately feathered hat Zazà () is an opera by Ruggero Leoncavallo, with a libretto by the composer, which draws on the same material as the French play Zaza (1898). The story concerns the French music hall singer, Zazà, and her affair and subsequent decision to leave her lover, Milio, when she discovers that he is married. The music is influenced by the French music halls where Leoncavallo had spent his early years as a composer.

Its premiere was at the Teatro Lirico in Milan on 10 November 1900, starring Rosina Storchio as Zazà, Edoardo Garbin as Milio, Mario Sammarco as Cascart and Clorinda Pini-Corsi as Anaide, and conducted by Arturo Toscanini. It was later seen in opera houses around the world. Over the following twenty years, it received more than fifty new productions from Palermo to Paris, Buenos Aires to Moscow, Cairo to San Francisco, arriving at the Metropolitan Opera on 16 January 1920 in a production directed by David Belasco and conducted by Roberto Moranzoni, starring Geraldine Farrar, Giulio Crimi and Pasquale Amato, and later, Giovanni Martinelli and Giuseppe De Luca.