Movies:
* Home Alone (1990) - Buzz McCallister
* Home Alone 2: Lost in New York (1992) - Buzz McCallister
* Dennis the Menace (1993) - Tommy
* The Mighty Ducks (1992) - Charlie Conway
* The Santa Clause (1994) - Charlie Calvin
* The Santa Clause 2 (2002) - Charlie Calvin
* The Santa Clause 3: The Escape Clause (2006) - Charlie Calvin
* The Princess Diaries (2001) - Joe
* The Iceman (2012) - Jerry
* The Bling Ring (2013) - Mr. Richards
* Cherry (2021) - Mike
* The Princess Bride (1987) - Westley (young)
Television:
* The Simpsons (1989 - present) - Various voices
* Supernatural (2005-2020) - Luke
* Law & Order: Special Victims Unit (1999 - present) - Various roles
* Blue Bloods (2010-present) - Detective Donnell
* Chicago Fire (2012 - present) - Jimmy
* The Good Wife (2009-2016) - Various roles
* The Blacklist (2013-present) - Various roles
* The Americans (2013-2018) - Various roles
* Orange Is the New Black (2013-2019) - Various roles
* The Sinner (2017-present) - Various roles
* The Haunting of Hill House (2018) - Various roles
* The Walking Dead (2010-present) - Various roles
This is not an exhaustive list, but it includes some of Peter Ratray's most notable roles. He has had a long and successful career in both film and television.