Mary McCormack

Acting

February 8, 1969 (57 years old)

Plainfield, New Jersey, USA

Female

42 Movies

37 TV Shows

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).

1408

2007 6.7

as Lilly Enslin

Age 38 (now 57)

K-PAX

2001 7.2

as Rachel Powell

Age 32 (now 57)

The West Wing

1999 8.3

as Kate Harper

Age 30 (now 57) 48 eps

48 eps

Right at Your Door

2006 5.8

as Lexi

Age 36 (now 57)

Private Parts

1997 6.5

as Alison Stern

Age 28 (now 57)

Drone

2017 5.3

as Ellen

Age 48 (now 57)

In Plain Sight

2008 7.1

as Mary Shannon

Age 39 (now 57) 61 eps

61 eps

Mystery, Alaska

1999 6.3

as Donna Biebe

Age 30 (now 57)

Vicious

2025 6.0

as Mother

Age 56 (now 57)

Dickie Roberts: Former Child Star

2003 5.1

as Grace Finney

Age 34 (now 57)

Scooby-Doo! WrestleMania Mystery

2014 7.3

as Ms. Richards (voice)

Age 45 (now 57)

Deep Impact

1998 6.2

as Andrea Baker

Age 29 (now 57)

High Heels and Low Lifes

2001 6.1

as Frances

Age 32 (now 57)

Treehouse

2019 5.5

as Lilith

Age 50 (now 57)

Heels

2021 7.4

as Willie Day

Age 52 (now 57) 16 eps

16 eps

True Crime

1999 6.5

as Michelle Ziegler

Age 30 (now 57)

Vicious

2025 6.0

as Mother

Age 56 (now 57)

National Memorial Day Concert

2023 2.0

as Self

Age 54 (now 57)

Unpregnant

2020 6.9

as Debra Clarke

Age 51 (now 57)

Still Laugh-In: The Stars Celebrate

2019 5.3

as Self

Age 50 (now 57)

Treehouse

2019 5.5

as Lilith

Age 50 (now 57)

Drone

2017 5.3

as Ellen

Age 48 (now 57)

Alien Code

2017 5.4

as Rebecca

Age 48 (now 57)

The Crash

2017 4.5

as Sarah Schwab

Age 47 (now 57)

An American Girl Story: Maryellen 1955 - Extraordinary Christmas

2016 7.8

as Kay Larkin

Age 47 (now 57)

A Country Called Home

2016 5.3

as Amanda

Age 47 (now 57)

Scooby-Doo! WrestleMania Mystery

2014 7.3

as Ms. Richards (voice)

Age 45 (now 57)

Escape from Polygamy

2013 6.8

as Leann

Age 44 (now 57)

Should've Been Romeo

2012 4.3

as Ellen

Age 43 (now 57)

The Unprofessional

2012

as Hilary Pfeiffer-Dunne

Age 42 (now 57)

1408

2007 6.7

as Lilly Enslin

Age 38 (now 57)

For Your Consideration

2006 5.8

as Pilgrim Woman

Age 37 (now 57)

Right at Your Door

2006 5.8

as Lexi

Age 36 (now 57)

Madison

2005 5.8

as Bonnie McCormick

Age 36 (now 57)

Dickie Roberts: Former Child Star

2003 5.1

as Grace Finney

Age 34 (now 57)

Full Frontal

2002 4.6

as Linda

Age 33 (now 57)