Mary McCormack

Mary McCormack

Acting

Born February 8, 1969 · 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 (2…

Known for

Watch What Happens Live with Andy Cohen

Watch What Happens Live with Andy Cohen

2009

Law & Order

Law & Order

1990

The Pitt

The Pitt

2025

The West Wing

The West Wing

1999

Law & Order: Criminal Intent

Law & Order: Criminal Intent

2001

The Late Late Show with Craig Ferguson

The Late Late Show with Craig Ferguson

2005

Scandal

Scandal

2012

Jimmy Kimmel Live!

Jimmy Kimmel Live!

2003

Acting(77)

2025ViciousMother

2025The PittDr. Linda Conley

2023National Memorial Day ConcertSelf

2021HeelsWillie Day

2020UnpregnantDebra Clarke

2019The L Word: Generation QAnne Finley

2019Still Laugh-In: The Stars CelebrateSelf

2019TreehouseLilith

2018The Kids Are AlrightPeggy Cleary

201825 Words or LessSelf

2018For the PeopleChloe Daniels

2017Will & GraceJanet

2017LoadedCasey

2017Alien CodeRebecca

2017The CrashSarah Schwab

2016An American Girl Story: Maryellen 1955 - Extraordinary ChristmasKay Larkin

2016DivorceKathy DeSantis

2016Match GameSelf - Panelist

2016To Tell the TruthSelf - Panelist

2016ChelseaSelf

2016A Country Called HomeAmanda

2016Chelsea DoesHerself

2016Angie TribecaAbigail Liukin

2014Scooby-Doo! WrestleMania MysteryMs. Richards (voice)

2013Welcome to the FamilyCaroline Yoder

2013Escape from PolygamyLeann

2012The NewsroomMolly Levy

2012Should've Been RomeoEllen

2012ScandalLisa Elliot

2012House of LiesDenna Altshuler

2012The UnprofessionalHilary Pfeiffer-Dunne

2009Watch What Happens Live with Andy CohenSelf - Guest

2009Late Night with Jimmy FallonSelf

2008In Plain SightMary Shannon

20071408Lilly Enslin

2006For Your ConsiderationPilgrim Woman

2006Right at Your DoorLexi

2005MadisonBonnie McCormick

2005The Late Late Show with Craig FergusonSelf

2004TrafficCarole McKay

2003K StreetMaggie Morris

2003The Ellen DeGeneres ShowSelf

2003Dickie Roberts: Former Child StarGrace Finney

2003Jimmy Kimmel Live!Self

2002Full FrontalLinda

2002World TravelerMargaret

2001K-PAXRachel Powell

2001Law & Order: Criminal IntentMary Shannon

2001High Heels and Low LifesFrances

2001BigLovePhoebe

2000East of ADaphne

2000Gun ShyGloria Nesstra

2000The Broken Hearts Club: A Romantic ComedyAnne

2000Other VoicesAnna

1999The Big TeaseMonique

1999Mystery, AlaskaDonna Biebe

1999The West WingKate Harper

1999The Late Late Show with Craig KilbornSelf - Guest

1999True CrimeMichelle Ziegler

1999HarvestAgent Becka Anslinger

1999Getting to Know YouLeila Lee

1998The AlarmistSally

199854New Year's Eve Wife (uncredited)

1998Deep ImpactAndrea Baker

1997Murder One: Diary of a Serial KillerJustine Appleton

1997Fathers' DayVirginia Farrell (uncredited)

1997Private PartsAlison Stern

1997Colin FitzMoira

1995Murder OneJustine Appleton

1995The Wright VerdictsBeth Eckhart

1995Backfire!Sarah

1994Miracle on 34th StreetMyrna Foy

1992The Tonight Show with Jay Leno

1990Law & OrderRickie the Bartender

1956Tony AwardsSelf - Nominee