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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).
2009 · Self - Guest
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1990 · Rickie the Bartender
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2001 · Mary Shannon
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1999 · Kate Harper
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2025 · Dr. Linda Conley
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2012 · Lisa Elliot
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2003 · Self
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2005 · Self
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1994 · Debbie
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1956 · Self - Nominee
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1992
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2003 · Self
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2018 · Self
Not in this catalog2018
Not in this catalog2018 · Mary McCormack
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2012 · Denna Altshuler
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2008 · Mary Shannon
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2016 · Self
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2012 · Molly Levy
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2017 · Janet
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2009 · Self
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2016 · Self - Panelist
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1995 · Justine Appleton
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2016 · Self - Panelist
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1999 · Self - Guest
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2016 · Abigail Liukin
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1998 · Andrea Baker
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2019 · Anne Finley
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2016 · Kathy DeSantis
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2007 · Lilly Enslin
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1994 · Myrna Foy
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2018 · Chloe Daniels
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2021 · Willie Day
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2001 · Rachel Powell
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2025 · Mother
1999 · Michelle Ziegler
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1998 · New Year's Eve Wife (uncredited)
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2000 · Gloria Nesstra
1997 · Alison Stern
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2003 · Maggie Morris
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2018 · Peggy Cleary
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1997 · Virginia Farrell (uncredited)
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2004 · Carole McKay
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2017 · Ellen
2002 · Linda
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2006 · Pilgrim Woman
2013 · Caroline Yoder
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1999 · Donna Biebe
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2014 · Ms. Richards (voice)
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2001 · Frances
1995 · Beth Eckhart
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2017 · Rebecca
2003 · Grace Finney
2019 · Lilith
2020 · Debra Clarke
2017 · Sarah Schwab
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2017 · Casey
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2000 · Anne
2006 · Lexi
2001 · Phoebe
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1999 · Monique
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2016 · Herself
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1995 · Sarah
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1998 · Sally
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1997 · Moira
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2000 · Anna
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2019 · Self
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2016 · Amanda
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2012 · Ellen
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1999 · Leila Lee
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2005 · Bonnie McCormick
Not in this catalog2012 · Hilary Pfeiffer-Dunne
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1999 · Agent Becka Anslinger
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2013 · Leann
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2002 · Margaret
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2016 · Kay Larkin
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1997 · Justine Appleton
Not in this catalog2000 · Daphne
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2023 · Self
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