Mary McCormack movies and series

February 8, 1969 (age 57) Plainfield, New Jersey, USA
IMDb

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).

Her titles like 1408, K-PAX, and Deep Impact - her biggest roles first. Last updated: September 29, 2026

Watched 0/44
6.19 /10
  • 1
    1
    1408
    2007June 2007 by Mikael Håfström
    Starring as Lilly Enslin
    Starring as Lilly Enslin
    6.25 Good-- 5,078 ratings
  • 2
    2
    K-PAX
    2001October 2001 by Iain Softley
    Starring as Rachel Powell
    Starring as Rachel Powell
    6.76 Good 2,879 ratings
  • 3
    3
    Deep Impact
    1998May 1998 by Mimi Leder
    Minor role as Andrea Baker
    Minor role as Andrea Baker
    5.80 Okay+ 3,484 ratings
  • 4
    4
    Miracle on 34th Street
    1994November 1994 by Les Mayfield
    Minor role as Myrna Foy
    Minor role as Myrna Foy
    6.32 Good-- 1,199 ratings
  • 5
    5
    True Crime
    1999March 1999 by Clint Eastwood
    Minor role as Michelle Ziegler
    Minor role as Michelle Ziegler
    6.06 Okay++ 884 ratings
  • 6
    6
    Right at Your Door
    2006January 2006 by Chris Gorak
    Lead role as Lexi
    Lead role as Lexi
    5.70 Okay+ 266 ratings
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  • 7
    7
    Private Parts
    1997March 1997 by Betty Thomas
    Starring as Alison Stern
    Starring as Alison Stern
    6.04 Okay++ 396 ratings
  • 8
    8
    Drone
    2017May 2017 by Jason Bourque
    Starring as Ellen
    Starring as Ellen
    5.38 Okay- 293 ratings
  • 9
    9
    Vicious
    2025August 2025 by Bryan Bertino
    Starring as Mother
    Starring as Mother
    5.76 Okay+ 301 ratings
  • 10
    10
    Mystery, Alaska
    1999October 1999 by Jay Roach
    Starring as Donna Biebe
    Starring as Donna Biebe
    5.93 Okay++ 289 ratings
  • 11
    11
    The West Wing
    1999–2006 by Aaron Sorkin
    Minor role as Kate Harper
    Minor role as Kate Harper
    7.32 Excellent-- 614 ratings
  • 12
    12
    Dickie Roberts: Former Child Star
    2003September 2003 by Sam Weisman
    Starring as Grace Finney
    Starring as Grace Finney
    5.38 Okay- 211 ratings
  • 13
    13
    Scooby-Doo! WrestleMania Mystery
    2014March 2014 by Brandon Vietti
    Supporting as Ms. Richards (voice)
    Supporting as Ms. Richards (voice)
    6.55 Good- 346 ratings
  • 14
    14
    Unpregnant
    2020September 2020 by Rachel Lee Goldenberg
    Supporting as Debra Clarke
    Supporting as Debra Clarke
    6.24 Good-- 335 ratings
  • 15
    15
    In Plain Sight
    2008–2012 by David Maples
    Lead role as Mary Shannon
    Lead role as Mary Shannon
    6.13 Good-- 101 ratings
  • 16
    16
    Heels
    2021–2023 by Michael Waldron
    Supporting as Willie Day
    Supporting as Willie Day
    6.34 Good- 180 ratings
  • 17
    17
    Treehouse
    2019March 2019 by James Roday Rodriguez
    Starring as Lilith
    Starring as Lilith
    5.79 Okay+ <100 ratings
  • 18
    18
    Full Frontal
    2002August 2002 by Steven Soderbergh
    Supporting as Linda
    Supporting as Linda
    5.44 Okay- 114 ratings
  • 19
    19
    High Heels and Low Lifes
    2001July 2001 by Mel Smith
    Starring as Frances
    Starring as Frances
    5.96 Okay++ <100 ratings
  • 20
    20
    Gun Shy
    2000February 2000 by Eric Blakeney
    Minor role as Gloria Nesstra
    Minor role as Gloria Nesstra
    5.55 Okay 152 ratings
  • 21
    21
    Alien Code
    2017April 2017 by Michael G. Cooney
    Starring as Rebecca
    Starring as Rebecca
    5.75 Okay+ <100 ratings
  • 22
    22
    The Broken Hearts Club: A Romantic Comedy
    2000February 2000 by Greg Berlanti
    Minor role as Anne
    Minor role as Anne
    5.99 Okay++ 101 ratings
  • 23
    23
    The Crash
    2017January 2017 by Aram Rappaport
    Supporting as Sarah Schwab
    Supporting as Sarah Schwab
    5.65 Okay <100 ratings
  • 24
    24
    Escape from Polygamy
    2013August 2013 by Rachel Lee Goldenberg
    Starring as Leann
    Starring as Leann
    6.09 Okay++ <100 ratings
  • 25
    25
    A Country Called Home
    2016February 2016 by Anna Axster
    Starring as Amanda
    Starring as Amanda
    5.89 Okay++ <100 ratings
  • 26
    26
    Madison
    2005April 2005 by William Bindley
    Starring as Bonnie McCormick
    Starring as Bonnie McCormick
    5.97 Okay++ <100 ratings
  • 27
    27
    Murder One
    1995–1997 by Channing Gibson
    Supporting as Justine Appleton
    Supporting as Justine Appleton
    6.19 Good-- <100 ratings
  • 28
    28
    The Big Tease
    1999November 1999 by Kevin Allen
    Starring as Monique
    Starring as Monique
    6.01 Okay++ <100 ratings
  • 29
    29
    Loaded
    2017
    Supporting as Casey
    Supporting as Casey
    6.02 Okay++ <100 ratings
  • 30
    30
    The Kids Are Alright
    2018–2019 by Tim Doyle
    Supporting as Peggy Cleary
    Supporting as Peggy Cleary
    6.06 Okay++ <100 ratings
  • 31
    31
    The Alarmist
    1998October 1998 by Evan Dunsky
    Supporting as Sally
    Supporting as Sally
    5.90 Okay++ <100 ratings
  • 32
    32
    World Traveler
    2002April 2002 by Bart Freundlich
    Supporting as Margaret
    Supporting as Margaret
    5.84 Okay+ <100 ratings
  • 33
    33
    K Street
    2003 by Steven Soderbergh
    Lead role as Maggie Morris
    Lead role as Maggie Morris
    Needs more reviews
  • 34
    34
    An American Girl Story: Maryellen 1955 - Extraordinary Christmas
    2016November 2016 by Valerie Weiss
    Starring as Kay Larkin
    Starring as Kay Larkin
    6.13 Good-- <100 ratings
  • 35
    35
    Other Voices
    2000January 2000 by Dan McCormack
    Starring as Anna
    Starring as Anna
    5.95 Okay++ <100 ratings
  • 36
    36
    Welcome to the Family
    2013 by Mike Sikowitz
    Starring as Caroline Yoder
    Starring as Caroline Yoder
    Needs more reviews
  • 37
    37
    Traffic
    2004 by Graham King
    Supporting as Carole McKay
    Supporting as Carole McKay
    Needs more reviews
  • 38
    38
    Harvest
    1999March 1999 by Stuart Burkin
    Lead role as Agent Becka Anslinger
    Lead role as Agent Becka Anslinger
    Needs more reviews
  • 39
    39
    Backfire!
    1995January 1995 by A. Dean Bell
    Supporting as Sarah
    Supporting as Sarah
    Needs more reviews
  • 40
    40
    BigLove
    2001January 2001 by Leif Tilden
    Starring as Phoebe
    Starring as Phoebe
    Needs more reviews
  • 41
    41
    Getting to Know You
    1999January 1999 by Lisanne Skyler
    Supporting as Leila Lee
    Supporting as Leila Lee
    Needs more reviews
  • 42
    42
    Should've Been Romeo
    2012April 2012 by Marc Bennett
    Minor role as Ellen
    Minor role as Ellen
    Needs more reviews
  • 43
    43
    Colin Fitz
    1997January 1997 by Robert Bella
    Minor role as Moira
    Minor role as Moira
    Needs more reviews
  • 44
    44
    The Wright Verdicts
    1995 by Dick Wolf
    Supporting as Beth Eckhart
    Supporting as Beth Eckhart
    Needs more reviews
Co-starring with:
John Slattery 2 titles
Minnie Driver 2 titles
Haley Lu Richardson 2 titles
Paul Ben-Victor 3 titles
David Spade 1 title
Jimmi Simpson 1 title
Rory Cochrane 1 title
Sam Rockwell 1 title
Sean Bean 1 title
Craig Ferguson 1 title
Dakota Fanning 1 title
Imogen Poots 1 title
Jeff Bridges 1 title
Jeffrey DeMunn 1 title
Jim Caviezel 1 title
John Cusack 1 title
Kyle Gallner 1 title
Mike O'Malley 1 title
Roger Guenveur Smith 1 title
Max Kasch 1 title
Nicky Katt 1 title
Jake Lloyd 1 title
Craig Bierko 1 title
Stockard Channing 1 title