"Non siamo soli" (English: "We Are Not Alone") is a single by Eros Ramazzotti with the Latin-pop singer Ricky Martin. This song is the first single from the greatest hits of Eros Ramazzotti, e². Exclusively for the song Ricky Martin sang in Italian. There are two versions of the song - Italian ("Non siamo soli") and Spanish ("No Estamos Solos").
The song topped the Italian chart for eleven consecutive weeks. It also peaked at number two in Spain and number three in Switzerland. The song reached number fifteen in Belgium Wallonia, number thirty-two in Germany and number forty-five in Austria. In the United States, it peaked at number twenty-one on the Hot Latin Songs.