Mary McCormack
Acting
Born: 1969-02-08 · 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).
🎬 Movies (20)
Vicious
2025
Mother
National Memorial Day Concert
2023
Self
Unpregnant
2020
Debra Clarke
Still Laugh-In: The Stars Celebrate
2019
Self
Treehouse
2019
Lilith
Drone
2017
Ellen
Alien Code
2017
Rebecca
The Crash
2017
Sarah Schwab
An American Girl Story: Maryellen 1955 - Extraordinary Christmas
2016
Kay Larkin
A Country Called Home
2016
Amanda
Scooby-Doo! WrestleMania Mystery
2014
Ms. Richards (voice)
Escape from Polygamy
2013
Leann
Should've Been Romeo
2012
Ellen
The Unprofessional
2012
Hilary Pfeiffer-Dunne
1408
2007
Lilly Enslin
For Your Consideration
2006
Pilgrim Woman
Right at Your Door
2006
Lexi
Madison
2005
Bonnie McCormick
Dickie Roberts: Former Child Star
2003
Grace Finney
Full Frontal
2002
Linda
📺 TV Shows (20)
The Pitt
2025
Dr. Linda Conley
Heels
2021
Willie Day
The L Word: Generation Q
2019
Anne Finley
The Kids Are Alright
2018
Peggy Cleary
25 Words or Less
2018
Self
25 Words or Less
2018
25 Words or Less
2018
Mary McCormack
For the People
2018
Chloe Daniels
Will & Grace
2017
Janet
Loaded
2017
Casey
Divorce
2016
Kathy DeSantis
Match Game
2016
Self - Panelist
To Tell the Truth
2016
Self - Panelist
Chelsea
2016
Self
Chelsea Does
2016
Herself
Angie Tribeca
2016
Abigail Liukin
Welcome to the Family
2013
Caroline Yoder
The Newsroom
2012
Molly Levy
Scandal
2012
Lisa Elliot
House of Lies
2012
Denna Altshuler