Born 1969 (age 57) · Plainfield, New Jersey, USA
Appears in 77 titles

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).

Filmography

1408
6.7
1408
2007
as Lilly Enslin
Deep Impact
6.2
Deep Impact
1998
as Andrea Baker
K-PAX
7.2
K-PAX
2001
as Rachel Powell
Miracle on 34th Street
6.8
Miracle on 34th Street
1994
as Myrna Foy
True Crime
6.5
True Crime
1999
as Michelle Ziegler
54
5.9
54
1998
as New Year's Eve Wife (uncredited)
Private Parts
6.5
Private Parts
1997
as Alison Stern
Scooby-Doo! WrestleMania Mystery
7.3
Scooby-Doo! WrestleMania Mystery
2014
as Ms. Richards (voice)
Unpregnant
6.9
Unpregnant
2020
as Debra Clarke
Fathers' Day
5.5
Fathers' Day
1997
as Virginia Farrell (uncredited)
Drone
5.3
Drone
2017
as Ellen
Mystery, Alaska
6.3
Mystery, Alaska
1999
as Donna Biebe
Right at Your Door
5.8
Right at Your Door
2006
as Lexi
Vicious
6.0
Vicious
2025
as Mother
Dickie Roberts: Former Child Star
5.1
Dickie Roberts: Former Child Star
2003
as Grace Finney
For Your Consideration
5.8
For Your Consideration
2006
as Pilgrim Woman
Gun Shy
5.2
Gun Shy
2000
as Gloria Nesstra
Full Frontal
4.6
Full Frontal
2002
as Linda
The Broken Hearts Club: A Romantic Comedy
Treehouse
5.5
Treehouse
2019
as Lilith