Mary McCormack
Acting
1969-02-08 · Plainfield, New Jersey, USA
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).
movieVicious
as Mother · 2025 · 5.9
tvThe Pitt
as Dr. Linda Conley · 2025 · 8.7
movieNational Memorial Day Concert
as Self · 2023 · 2.0
tvHeels
as Willie Day · 2021 · 7.4
movieUnpregnant
as Debra Clarke · 2020 · 6.8
tvThe L Word: Generation Q
as Anne Finley · 2019 · 7.6
movieStill Laugh-In: The Stars Celebrate
as Self · 2019 · 5.3
movieTreehouse
as Lilith · 2019 · 5.5
tvThe Kids Are Alright
as Peggy Cleary · 2018 · 6.9
tv25 Words or Less
as Self · 2018 · 5.2
tv25 Words or Less
as · 2018 · 5.2
tv25 Words or Less
as Mary McCormack · 2018 · 5.2
tvFor the People
as Chloe Daniels · 2018 · 7.3
tvWill & Grace
as Janet · 2017 · 7.5
movieDrone
as Ellen · 2017 · 5.3
tvLoaded
as Casey · 2017 · 6.5
movieAlien Code
as Rebecca · 2017 · 5.4
movieThe Crash
as Sarah Schwab · 2017 · 4.5
movieAn American Girl Story: Maryellen 1955 - Extraordinary Christmas
as Kay Larkin · 2016 · 7.8
tvDivorce
as Kathy DeSantis · 2016 · 6.4
tvMatch Game
as Self - Panelist · 2016 · 6.4
tvTo Tell the Truth
as Self - Panelist · 2016 · 5.7
tvChelsea
as Self · 2016 · 5.1
movieA Country Called Home
as Amanda · 2016 · 5.3