"Non siamo soli" (Italian: [non ˈsjaːmo ˈsoːli]; English: "We Are Not Alone") is a single by Eros Ramazzotti with Latin singer Ricky Martin, who sang it exclusively in Italian.

The song, the first single from the greatest hits of Eros Ramazzotti, e², has a second Spanish-language version, "No Estamos Solos".

The music video for the song was directed by Wayne Isham and was filmed in Miami Beach, Florida in August 2007.

The song topped the Italian chart for eleven consecutive weeks.

In the United States, it peaked at number twenty-one on the Hot Latin Songs chart.