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Mary McCormack

Birthday

1969-02-08

Place of Birth

Plainfield, New Jersey, USA

Biography

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).
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Vicious

Vicious

2025 4.9
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as Mother

2025
National Memorial Day Concert

National Memorial Day Concert

2023 2
National Memorial Day Concert

as Self

2023
Heels

Heels

2021 8
Heels

as Willie Day

2021
Unpregnant

Unpregnant

2020 6.5
Unpregnant

as Debra Clarke

2020
Treehouse

Treehouse

2019 4.9
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as Lilith

2019
The Kids Are Alright

The Kids Are Alright

2018 7.9
The Kids Are Alright

as Peggy Cleary

2018
Loaded

Loaded

2017 6.6
Loaded

as Casey

2017
Drone

Drone

2017 5.4
Drone

as Ellen

2017
Alien Code

Alien Code

2017 5.7
Alien Code

as Rebecca

2017
The Crash

The Crash

2017 4.2
The Crash

as Sarah Schwab

2017
A Country Called Home

A Country Called Home

2016 5.9
A Country Called Home

as Amanda

2016
An American Girl Story: Maryellen 1955 - Extraordinary Christmas

An American Girl Story: Maryellen 1955 - Extraordinary Christmas

2016 6.7
An American Girl Story: Maryellen 1955 - Extraordinary Christmas

as Kay Larkin

2016
Scooby-Doo! WrestleMania Mystery

Scooby-Doo! WrestleMania Mystery

2014 6.2
Scooby-Doo! WrestleMania Mystery

as Ms. Richards (voice)

2014
Welcome to the Family

Welcome to the Family

2013 5.7
Welcome to the Family

as Caroline Yoder

2013
Escape from Polygamy

Escape from Polygamy

2013 6.1
Escape from Polygamy

as Leann

2013
Should've Been Romeo

Should've Been Romeo

2012 5.4
Should've Been Romeo

as Ellen

2012
The Unprofessional

The Unprofessional

2012 4.9
The Unprofessional

as Hilary Pfeiffer-Dunne

2012
In Plain Sight

In Plain Sight

2008 7.4
In Plain Sight

as Mary Shannon

2008
1408

1408

2007 6.8
1408

as Lilly Enslin

2007
Right at Your Door

Right at Your Door

2006 6
Right at Your Door

as Lexi

2006
Madison

Madison

2005 6.3
Madison

as Bonnie McCormick

2005
Traffic

Traffic

2004 7
Traffic

as Carole McKay

2004
Dickie Roberts: Former Child Star

Dickie Roberts: Former Child Star

2003 5.6
Dickie Roberts: Former Child Star

as Grace Finney

2003
K Street

K Street

2003 6.6
K Street

as Maggie Morris

2003
Full Frontal

Full Frontal

2002 4.7
Full Frontal

as Linda

2002
World Traveler

World Traveler

2002 5.3
World Traveler

as Margaret

2002
High Heels and Low Lifes

High Heels and Low Lifes

2001 6.1
High Heels and Low Lifes

as Frances

2001
BigLove

BigLove

2001 6.1
BigLove

as Phoebe

2001
K-PAX

K-PAX

2001 7.4
K-PAX

as Rachel Powell

2001
The Big Tease

The Big Tease

2000 6.2
The Big Tease

as Monique

2000