Peter Onorati (born May 16, 1953) is an American actor. He is known for his TV roles as Charlie Howell on Civil Wars (1991–1993), Mr. Scotto on Murder One (1995–1997), Stanley Pearson on This Is Us (2017–2022), and Jeffrey Mumford on S.W.A.T. (2017–2019), and his film roles in Goodfellas (1990), and Fallen Arches (1998).
Onorati was born and raised in Boonton, New Jersey to Italian parents and attended Boonton High School and Lycoming College.