Jay Giannone is an American actor, director, writer, and producer known for his work in both film and television. He is often recognized for his supporting roles in major films, particularly those in the crime and thriller genres. Some of his notable acting roles include appearances in films like The Departed (2006), directed by Martin Scorsese, where he played a small but memorable part, and Patriots Day (2016), a film about the Boston Marathon bombing directed by Peter Berg.