Salvatore Cardillo (1874–1947) was an Italian-American composer. Born in Naples, he studied piano and composition in Italy before emigrating in 1903 to the United States as a university graduate. His career encompassed songwriting and movie music. He died in New York.
The composer also wrote the songs Barcarola, to a text by Edoardo San Giovanni, and Oi luna (O Silvery Moon), to a text by Riccardo Cordiferro. These were published in 1921 as "Two Neapolitan Songs" by G. Schirmer Inc. in New York.