Mary McCormack - Actor Profile

Mary McCormack

Acting
Updated: Apr 13, 2026
42Total Films
7.8 Highest Rated
Born: Feb 8, 1969
Birth Place: Plainfield, New Jersey, USA

About Mary McCormack

Mary Catherine McCormack is an American actress. She has had leading roles as Justine Appleton on the series Murder One (1995–1997), as Deputy National Security Adviser Kate Harper on The West Wing (2004–2006), as Deputy U.S. Marshal Mary Shannon on In Plain Sight (2008–2012), and as Peggy on the comedy series The Kids Are Alright (2018–2019).

Mary McCormack Movies & Career Overview

The filmography of Mary McCormack reflects a career marked by diverse experimentation. Across 42 major appearances, the actor has built a reputation through performances in multiple genres and storytelling styles.

Dominant Genre

A large portion of Mary McCormack's work falls within the Comedy genre, where audiences tend to respond most strongly to their on-screen presence.

Success Ratio

Approximately 26% of Mary McCormack's films maintain ratings above 6.5, indicating a consistent level of audience approval.

One of the most highly rated entries in their career remains An American Girl Story: Maryellen 1955 - Extraordinary Christmas, which stands out as a key performance.

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Best Mary McCormack Movies Ranked

Must-watch hits from Mary McCormack's career based on audience ratings.

Full Filmography

Every movie Mary McCormack has appeared in, with audience ratings and verdicts.

YearMovieCharacterSuccessMore
2025 Vicious Mother Average Similar →
2023 National Memorial Day Concert Self Flop Similar →
2020 Unpregnant Debra Clarke Hit Similar →
2019 Still Laugh-In: The Stars Celebrate Self Flop Similar →
2019 Treehouse Lilith Average Similar →
2017 Drone Ellen Flop Similar →
2017 Alien Code Rebecca Average Similar →
2017 The Crash Sarah Schwab Flop Similar →
2016 An American Girl Story: Maryellen 1955 - Extraordinary Christmas Kay Larkin Super Hit Similar →
2016 A Country Called Home Amanda Flop Similar →
2014 Scooby-Doo! WrestleMania Mystery Ms. Richards (voice) Hit Similar →
2013 Escape from Polygamy Leann Hit Similar →
2012 Should've Been Romeo Ellen Flop Similar →
2012 The Unprofessional Hilary Pfeiffer-Dunne Flop Similar →
2007 1408 Lilly Enslin Hit Similar →
2006 For Your Consideration Pilgrim Woman Average Similar →
2006 Right at Your Door Lexi Average Similar →
2005 Madison Bonnie McCormick Average Similar →
2003 Dickie Roberts: Former Child Star Grace Finney Flop Similar →
2002 Full Frontal Linda Flop Similar →
2002 World Traveler Margaret Flop Similar →
2001 K-PAX Rachel Powell Hit Similar →
2001 High Heels and Low Lifes Frances Average Similar →
2001 BigLove Phoebe Hit Similar →
2000 East of A Daphne Flop Similar →
2000 Gun Shy Gloria Nesstra Flop Similar →
2000 The Broken Hearts Club: A Romantic Comedy Anne Average Similar →
2000 Other Voices Anna Flop Similar →
1999 The Big Tease Monique Average Similar →
1999 Mystery, Alaska Donna Biebe Average Similar →
1999 True Crime Michelle Ziegler Hit Similar →
1999 Harvest Agent Becka Anslinger Flop Similar →
1999 Getting to Know You Leila Lee Super Hit Similar →
1998 The Alarmist Sally Flop Similar →
1998 54 New Year's Eve Wife (uncredited) Average Similar →
1998 Deep Impact Andrea Baker Average Similar →
1997 Murder One: Diary of a Serial Killer Justine Appleton Flop Similar →
1997 Fathers' Day Virginia Farrell (uncredited) Average Similar →
1997 Private Parts Alison Stern Hit Similar →
1997 Colin Fitz Moira Flop Similar →
1995 Backfire! Sarah Flop Similar →
1994 Miracle on 34th Street Myrna Foy Hit Similar →

Mary McCormack - Frequently Asked Questions

What is the best movie of Mary McCormack?

According to audience ratings, the best movie starring Mary McCormack is "An American Girl Story: Maryellen 1955 - Extraordinary Christmas" with a rating of 7.8/10.

How many movies has Mary McCormack acted in?

Mary McCormack has been featured in at least 42 major films throughout their career.

What are some other popular movies by Mary McCormack?

Other notable films include "Getting to Know You", "Scooby-Doo! WrestleMania Mystery", and "K-PAX".

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