Rocco Sisto is an Italian-American stage, film, television, and voice actor. Sisto was born on February 18, 1953, in Bari, Italy, and later moved to Addison, Illinois. He attended and graduated Addison Trail High School in 1970 and studied acting at New York University's Graduate Acting Program at the Tisch School of the Arts, graduating in 1977. On TV, he played the young Junior Soprano in the HBO series The Sopranos. He has appeared as well in Star Trek: The Next Generation, Law & Order, CSI: Crime Scene Investigation, Blue Bloods, and Madam Secretary.

In film he has been seen in After Hours, Far and Away, Carlito's Way, Donnie Brasco, Illuminata, and The American Astronaut. His voice work includes Grand Theft Auto: San Andreas and The Warriors.

Sisto has acted in the New York Shakespeare Festival at the Delacorte Theater. In 1996 he received a Drama Desk Award nomination for his acting in the play Quills.