
Mary McCormack
Acting · Born 1969-02-08 · Plainfield, New Jersey, USA
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).
As cast

Vicious 2025
Cast

National Memorial Day Concert 2023
Cast

Unpregnant 2020
Cast

Still Laugh-In: The Stars Celebrate 2019
Cast

Treehouse 2019
Cast

Drone 2017
Cast

Alien Code 2017
Cast

The Crash 2017
Cast

An American Girl Story: Maryellen 1955 - Extraordinary Christmas 2016
Cast

A Country Called Home 2016
Cast

Scooby-Doo! WrestleMania Mystery 2014
Cast

Escape from Polygamy 2013
Cast

Should've Been Romeo 2012
Cast
No poster
The Unprofessional 2012
Cast

1408 2007
Cast

For Your Consideration 2006
Cast

Right at Your Door 2006
Cast

Madison 2005
Cast

Dickie Roberts: Former Child Star 2003
Cast

Full Frontal 2002
Cast

World Traveler 2002
Cast

K-PAX 2001
Cast

High Heels and Low Lifes 2001
Cast

BigLove 2001
Cast
No poster
East of A 2000
Cast

Gun Shy 2000
Cast

The Broken Hearts Club: A Romantic Comedy 2000
Cast

Other Voices 2000
Cast

The Big Tease 1999
Cast

Mystery, Alaska 1999
Cast

True Crime 1999
Cast

Harvest 1999
Cast

Getting to Know You 1999
Cast

The Alarmist 1998
Cast

54 1998
Cast

Deep Impact 1998
Cast

Murder One: Diary of a Serial Killer 1997
Cast

Fathers' Day 1997
Cast

Private Parts 1997
Cast

Colin Fitz 1997
Cast

Backfire! 1995
Cast

Miracle on 34th Street 1994
Cast
As director
No directing credits found.