Cesare Valletti was an Italian operatic tenor, one of the leading tenore di grazia of the postwar era.
Valletti was born in Rome, where he studied music. He also studied privately with Tito Schipa. He made his debut in Bari, as Alfredo in La traviata, in 1947. He came to prominence in 1950, when he sang in Il turco in Italia, opposite Maria Callas, in Rome. In the same year he made his debut at La Scala in Milan, singing Fenton in Falstaff, a role he reprised when the company took the production to Covent Garden later that year.
In 1951, Valletti went to Mexico City to sing La traviata with Maria Callas. He also partnered her in the famous Visconti production of La sonnambula, conducted by Leonard Bernstein, at La Scala in 1955, and again in La traviata at Covent Garden in 1958.
In September 1953, he made his American debut at the San Francisco Opera in the title role of Werther, opposite Giulietta Simionato as Charlotte, and later that same year, in December, he debuted at the Metropolitan Opera in New York, singing Don Ottavio in Don Giovanni. Other roles at the Met included Tamino, Almaviva, Nemorino, Ernesto, Alfredo, and des Grieux.