Mary McCormack

Personal Info

Known For

Acting

Born

1969-02-08

Place of Birth

Plainfield, New Jersey, USA
IMDb

Mary McCormack

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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Acting History

2025
Vicious as Mother
2023
National Memorial Day Concert as Self
2021
Heels as Willie Day
2020
Unpregnant as Debra Clarke
2019
The L Word: Generation Q as Anne Finley
2019
Still Laugh-In: The Stars Celebrate as Self
2019
Treehouse as Lilith
2018
The Kids Are Alright as Peggy Cleary
2018
25 Words or Less as Self
2018
25 Words or Less
2018
25 Words or Less as Mary McCormack
2018
For The People as Chloe Daniels
2017
Will & Grace as Janet
2017
Drone as Ellen
2017
Loaded as Casey
2017
Alien Code as Rebecca
2017
The Crash as Sarah Schwab
2016
An American Girl Story: Maryellen 1955 - Extraordinary Christmas as Kay Larkin
2016
Divorce as Kathy DeSantis
2016
Match Game as Self - Panelist
2016
To Tell the Truth as Self - Panelist
2016
Chelsea as Self
2016
A Country Called Home as Amanda
2016
Chelsea Does as Herself
2016
Angie Tribeca as Abigail Liukin
2014
Scooby-Doo! WrestleMania Mystery as Ms. Richards (voice)
2013
Welcome to the Family as Caroline Yoder
2013
Escape from Polygamy as Leann
2012
The Newsroom as Molly Levy
2012
Should've Been Romeo as Ellen
2012
Scandal as Lisa Elliot
2012
House of Lies as Denna Altshuler
2012
The Unprofessional as Hilary Pfeiffer-Dunne
2009
Watch What Happens Live with Andy Cohen as Self - Guest
2009
Late Night with Jimmy Fallon as Self
2008
In Plain Sight as Mary Shannon
2007
1408 as Lilly Enslin
2006
For Your Consideration as Pilgrim Woman
2006
Right at Your Door as Lexi
2005
Madison as Bonnie McCormick
2005
The Late Late Show with Craig Ferguson as Self
2004
Traffic as Carole McKay
2003
K Street as Maggie Morris
2003
The Ellen DeGeneres Show as Self
2003
Dickie Roberts: Former Child Star as Grace Finney
2002
Full Frontal as Linda
2002
World Traveler as Margaret
2001
K-PAX as Rachel Powell
2001
Law & Order: Criminal Intent as Mary Shannon
2001
High Heels and Low Lifes as Frances
2001
BigLove as Phoebe
2000
East of A as Daphne
2000
Gun Shy as Gloria Nesstra
2000
The Broken Hearts Club: A Romantic Comedy as Anne
2000
Other Voices as Anna
1999
The Big Tease as Monique
1999
Mystery, Alaska as Donna Biebe
1999
The West Wing as Kate Harper
1999
The Late Late Show with Craig Kilborn as Self - Guest
1999
True Crime as Michelle Ziegler
1999
Harvest as Agent Becka Anslinger
1999
Getting to Know You as Leila Lee
1998
The Alarmist as Sally
1998
54 as New Year's Eve Wife (uncredited)
1998
Deep Impact as Andrea Baker
1997
Murder One: Diary of a Serial Killer as Justine Appleton
1997
Fathers' Day as Virginia Farrell (uncredited)
1997
Private Parts as Alison Stern
1997
Colin Fitz as Moira
1995
Murder One as Justine Appleton
1995
The Wright Verdicts as Beth Eckhart
1995
Backfire! as Sarah Jackson
1994
Miracle on 34th Street as Myrna Foy
1994
ER as Debbie
1992
The Tonight Show with Jay Leno
1990
Law & Order as Rickie the Bartender
1956
Tony Awards as Self - Nominee