8.7Acting
Mary McCormack
- Born
- 1969-02-08
- Birthplace
- 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).
Known For
Filmography
77 titles · Newest first · Cast and crew credits
The Pitt
2025 · TV Show
Dr. Linda Conley
Vicious
2025 · Movie
Mother
National Memorial Day Concert
2023 · Movie
Self
Heels
2021 · TV Show
Willie Day
Unpregnant
2020 · Movie
Debra Clarke
Still Laugh-In: The Stars Celebrate
2019 · Movie
Self
The L Word: Generation Q
2019 · TV Show
Anne Finley
Treehouse
2019 · Movie
Lilith
25 Words or Less
2018 · TV Show
Self · Cast · Mary McCormack
For the People
2018 · TV Show
Chloe Daniels
The Kids Are Alright
2018 · TV Show
Peggy Cleary
Alien Code
2017 · Movie
Rebecca
Drone
2017 · Movie
Ellen
Loaded
2017 · TV Show
Casey
The Crash
2017 · Movie
Sarah Schwab
Will & Grace
2017 · TV Show
Janet
A Country Called Home
2016 · Movie
Amanda
An American Girl Story: Maryellen 1955 - Extraordinary Christmas
2016 · Movie
Kay Larkin
Angie Tribeca
2016 · TV Show
Abigail Liukin
Chelsea
2016 · TV Show
Self
Chelsea Does
2016 · TV Show
Herself
Divorce
2016 · TV Show
Kathy DeSantis
Match Game
2016 · TV Show
Self - Panelist
To Tell the Truth
2016 · TV Show
Self - Panelist
Scooby-Doo! WrestleMania Mystery
2014 · Movie
Ms. Richards (voice)
Escape from Polygamy
2013 · Movie
Leann
Welcome to the Family
2013 · TV Show
Caroline Yoder
House of Lies
2012 · TV Show
Denna Altshuler
Scandal
2012 · TV Show
Lisa Elliot
Should've Been Romeo
2012 · Movie
Ellen
The Newsroom
2012 · TV Show
Molly Levy
The Unprofessional
2012 · Movie
Hilary Pfeiffer-Dunne
Late Night with Jimmy Fallon
2009 · TV Show
Self
Watch What Happens Live with Andy Cohen
2009 · TV Show
Self - Guest
In Plain Sight
2008 · TV Show
Mary Shannon
1408
2007 · Movie
Lilly Enslin
For Your Consideration
2006 · Movie
Pilgrim Woman
Right at Your Door
2006 · Movie
Lexi
Madison
2005 · Movie
Bonnie McCormick
The Late Late Show with Craig Ferguson
2005 · TV Show
Self
Traffic
2004 · TV Show
Carole McKay
Dickie Roberts: Former Child Star
2003 · Movie
Grace Finney
Jimmy Kimmel Live!
2003 · TV Show
Self
K Street
2003 · TV Show
Maggie Morris
The Ellen DeGeneres Show
2003 · TV Show
Self
Full Frontal
2002 · Movie
Linda
World Traveler
2002 · Movie
Margaret
BigLove
2001 · Movie
Phoebe
High Heels and Low Lifes
2001 · Movie
Frances
K-PAX
2001 · Movie
Rachel Powell
Law & Order: Criminal Intent
2001 · TV Show
Mary Shannon
East of A
2000 · Movie
Daphne
Gun Shy
2000 · Movie
Gloria Nesstra
Other Voices
2000 · Movie
Anna
The Broken Hearts Club: A Romantic Comedy
2000 · Movie
Anne
Getting to Know You
1999 · Movie
Leila Lee
Harvest
1999 · Movie
Agent Becka Anslinger
Mystery, Alaska
1999 · Movie
Donna Biebe
The Big Tease
1999 · Movie
Monique
The Late Late Show with Craig Kilborn
1999 · TV Show
Self - Guest
The West Wing
1999 · TV Show
Kate Harper
True Crime
1999 · Movie
Michelle Ziegler
54
1998 · Movie
New Year's Eve Wife (uncredited)
Deep Impact
1998 · Movie
Andrea Baker
The Alarmist
1998 · Movie
Sally
Colin Fitz
1997 · Movie
Moira
Fathers' Day
1997 · Movie
Virginia Farrell (uncredited)
Murder One: Diary of a Serial Killer
1997 · Movie
Justine Appleton
Private Parts
1997 · Movie
Alison Stern
Backfire!
1995 · Movie
Sarah
Murder One
1995 · TV Show
Justine Appleton
The Wright Verdicts
1995 · TV Show
Beth Eckhart
ER
1994 · TV Show
Debbie
Miracle on 34th Street
1994 · Movie
Myrna Foy
The Tonight Show with Jay Leno
1992 · TV Show
Cast
Law & Order
1990 · TV Show
Rickie the Bartender
Tony Awards
1956 · TV Show
Self - Nominee