Mary McCormack
- Known for
- Acting
- Born
- Feb 8, 1969 (age 57)
- Place of birth
- Plainfield, New Jersey, USA
- Credits
- 77
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).
Known for
Filmography
Vicious
2025Movie
Mother
The Pitt
2025TV
Dr. Linda Conley
National Memorial Day Concert
2023Movie
Self
Heels
2021TV
Willie Day
Unpregnant
2020Movie
Debra Clarke
The L Word: Generation Q
2019TV
Anne Finley
Still Laugh-In: The Stars Celebrate
2019Movie
Self
Treehouse
2019Movie
Lilith
The Kids Are Alright
2018TV
Peggy Cleary
25 Words or Less
2018TV
Self, Mary McCormack
For the People
2018TV
Chloe Daniels
Will & Grace
2017TV
Janet
Drone
2017Movie
Ellen
Loaded
2017TV
Casey
Alien Code
2017Movie
Rebecca
The Crash
2017Movie
Sarah Schwab
An American Girl Story: Maryellen 1955 - Extraordinary Christmas
2016Movie
Kay Larkin
Divorce
2016TV
Kathy DeSantis
Match Game
2016TV
Self - Panelist
To Tell the Truth
2016TV
Self - Panelist
Chelsea
2016TV
Self
A Country Called Home
2016Movie
Amanda
Chelsea Does
2016TV
Herself
Angie Tribeca
2016TV
Abigail Liukin
Scooby-Doo! WrestleMania Mystery
2014Movie
Ms. Richards (voice)
Welcome to the Family
2013TV
Caroline Yoder
Escape from Polygamy
2013Movie
Leann
The Newsroom
2012TV
Molly Levy
Should've Been Romeo
2012Movie
Ellen
Scandal
2012TV
Lisa Elliot
House of Lies
2012TV
Denna Altshuler
The Unprofessional
2012Movie
Hilary Pfeiffer-Dunne
Watch What Happens Live with Andy Cohen
2009TV
Self - Guest
Late Night with Jimmy Fallon
2009TV
Self
In Plain Sight
2008TV
Mary Shannon
1408
2007Movie
Lilly Enslin
For Your Consideration
2006Movie
Pilgrim Woman
Right at Your Door
2006Movie
Lexi
Madison
2005Movie
Bonnie McCormick
The Late Late Show with Craig Ferguson
2005TV
Self
Traffic
2004TV
Carole McKay
K Street
2003TV
Maggie Morris
The Ellen DeGeneres Show
2003TV
Self
Dickie Roberts: Former Child Star
2003Movie
Grace Finney
Jimmy Kimmel Live!
2003TV
Self
Full Frontal
2002Movie
Linda
World Traveler
2002Movie
Margaret
K-PAX
2001Movie
Rachel Powell
Law & Order: Criminal Intent
2001TV
Mary Shannon
High Heels and Low Lifes
2001Movie
Frances
BigLove
2001Movie
Phoebe
East of A
2000Movie
Daphne
Gun Shy
2000Movie
Gloria Nesstra
The Broken Hearts Club: A Romantic Comedy
2000Movie
Anne
Other Voices
2000Movie
Anna
The Big Tease
1999Movie
Monique
Mystery, Alaska
1999Movie
Donna Biebe
The West Wing
1999TV
Kate Harper
The Late Late Show with Craig Kilborn
1999TV
Self - Guest
True Crime
1999Movie
Michelle Ziegler
Harvest
1999Movie
Agent Becka Anslinger
Getting to Know You
1999Movie
Leila Lee
The Alarmist
1998Movie
Sally
54
1998Movie
New Year's Eve Wife (uncredited)
Deep Impact
1998Movie
Andrea Baker
Murder One: Diary of a Serial Killer
1997Movie
Justine Appleton
Fathers' Day
1997Movie
Virginia Farrell (uncredited)
Private Parts
1997Movie
Alison Stern
Colin Fitz
1997Movie
Moira
Murder One
1995TV
Justine Appleton
The Wright Verdicts
1995TV
Beth Eckhart
Backfire!
1995Movie
Sarah
Miracle on 34th Street
1994Movie
Myrna Foy
ER
1994TV
Debbie
The Tonight Show with Jay Leno
1992TV
Law & Order
1990TV
Rickie the Bartender
Tony Awards
1956TV
Self - Nominee