Tomás I. Gueglio Saccone is an Argentine composer currently based in Chicago. His surreal and evocative works include chamber, orchestral, and electronic music, as well as pieces for actors based on speech and collaborative work with dancers.

He holds a doctorate from the University of Chicago, a MMus from Syracuse University, and a BMus from the Universidad Católica Argentina. Born in Buenos Aires, a major influence in his musical upbringing was Gerardo Gandini whose workshop he attended between 2003 and 2007.