Biography
Mary McCormack
Acting
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). In total, there are 77 recognized credits in film and television. On Cinestia you can browse Mary McCormack's complete filmography — 4…
Career works
77
Movies
42
Series
35
Career average
6.1/10
Birth date
02/08/1969
Place of birth
Plainfield, New Jersey, USA
Filmography highlights
Movies
Vicious
2025 · 6.0
National Memorial Day Concert
2023 · 2.0
Unpregnant
2020 · 6.8
Still Laugh-In: The Stars Celebrate
2019 · 5.4
Treehouse
2019 · 5.5
Drone
2017 · 5.3
Alien Code
2017 · 5.3
The Crash
2017 · 4.5
An American Girl Story: Maryellen 1955 - Extraordinary Christmas
2016 · 7.8
A Country Called Home
2016 · 5.3
Scooby-Doo! WrestleMania Mystery
2014 · 7.3
Escape from Polygamy
2013 · 6.7
Should've Been Romeo
2012 · 3.8
—
The Unprofessional
2012 · 2.0
1408
2007 · 6.7
Series
The Pitt
2025 · 8.7
Heels
2021 · 7.4
The L Word: Generation Q
2019 · 7.6
The Kids Are Alright
2018 · 6.8
25 Words or Less
2018 · 5.2
For the People
2018 · 7.2
Will & Grace
2017 · 7.5
Loaded
2017 · 6.4
Divorce
2016 · 6.5
Match Game
2016 · 6.5
To Tell the Truth
2016 · 5.8
Chelsea
2016 · 5.1
Chelsea Does
2016 · 5.4
Angie Tribeca
2016 · 6.4
Welcome to the Family
2013 · 5.4