6.7
Movie
Acting
Mary McCormack
- Born
- (age 57)
- Birthplace
- Plainfield, New Jersey, USA
- Credits
- 77 titles
Biography
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).
Signature work
Known For
6.7
Movie
6.3
Movie
Deep Impact
7.2
Movie
K-PAX
6.8
Movie
Miracle on 34th Street
8.7
TV
The Pitt
7.8
TV
ER
6.5
Movie
True Crime
8.1
TV
The Newsroom
7.3
TV
Law & Order
7.2
TV
Scandal
8.3
TV
The West Wing
6.5
Movie
Private Parts
7.6
TV
Law & Order: Criminal Intent
7.3
Movie
Scooby-Doo! WrestleMania Mystery
6.8
Movie
Unpregnant
6.0
Movie
Vicious
6.3
Movie
Mystery, Alaska
5.3
Movie
Drone
Acting credits 77
| Year | Title | Role |
|---|---|---|
| 2025 | Vicious Film | Mother |
| 2025 | The Pitt TV | Dr. Linda Conley (2 ep) |
| 2023 | National Memorial Day Concert Film | Self |
| 2021 | Heels TV | Willie Day (16 ep) |
| 2020 | Unpregnant Film | Debra Clarke |
| 2019 | The L Word: Generation Q TV | Anne Finley (1 ep) |
| 2019 | Still Laugh-In: The Stars Celebrate Film | Self |
| 2019 | Treehouse Film | Lilith |
| 2018 | The Kids Are Alright TV | Peggy Cleary (23 ep) |
| 2018 | 25 Words or Less TV | Self, Mary McCormack (25 ep) |
| 2018 | For the People TV | Chloe Daniels (1 ep) |
| 2017 | Will & Grace TV | Janet (2 ep) |
| 2017 | Drone Film | Ellen |
| 2017 | Loaded TV | Casey (8 ep) |
| 2017 | Alien Code Film | Rebecca |
| 2017 | The Crash Film | Sarah Schwab |
| 2016 | An American Girl Story: Maryellen 1955 - Extraordinary Christmas Film | Kay Larkin |
| 2016 | Divorce TV | Kathy DeSantis (1 ep) |
| 2016 | Match Game TV | Self - Panelist (1 ep) |
| 2016 | To Tell the Truth TV | Self - Panelist (1 ep) |
| 2016 | Chelsea TV | Self (2 ep) |
| 2016 | A Country Called Home Film | Amanda |
| 2016 | Chelsea Does TV | Herself (1 ep) |
| 2016 | Angie Tribeca TV | Abigail Liukin (3 ep) |
| 2014 | Scooby-Doo! WrestleMania Mystery Film | Ms. Richards (voice) |
| 2013 | Welcome to the Family TV | Caroline Yoder (9 ep) |
| 2013 | Escape from Polygamy Film | Leann |
| 2012 | The Newsroom TV | Molly Levy (2 ep) |
| 2012 | Should've Been Romeo Film | Ellen |
| 2012 | Scandal TV | Lisa Elliot (1 ep) |
| 2012 | House of Lies TV | Denna Altshuler (7 ep) |
| 2012 | The Unprofessional Film | Hilary Pfeiffer-Dunne |
| 2009 | Watch What Happens Live with Andy Cohen TV | Self - Guest (1 ep) |
| 2009 | Late Night with Jimmy Fallon TV | Self (1 ep) |
| 2008 | In Plain Sight TV | Mary Shannon (61 ep) |
| 2007 | 1408 Film | Lilly Enslin |
| 2006 | For Your Consideration Film | Pilgrim Woman |
| 2006 | Right at Your Door Film | Lexi |
| 2005 | Madison Film | Bonnie McCormick |
| 2005 | The Late Late Show with Craig Ferguson TV | Self (2 ep) |
| 2004 | Traffic TV | Carole McKay (3 ep) |
| 2003 | K Street TV | Maggie Morris (10 ep) |
| 2003 | The Ellen DeGeneres Show TV | Self (1 ep) |
| 2003 | Dickie Roberts: Former Child Star Film | Grace Finney |
| 2003 | Jimmy Kimmel Live! TV | Self (1 ep) |
| 2002 | Full Frontal Film | Linda |
| 2002 | World Traveler Film | Margaret |
| 2001 | K-PAX Film | Rachel Powell |
| 2001 | Law & Order: Criminal Intent TV | Mary Shannon (1 ep) |
| 2001 | High Heels and Low Lifes Film | Frances |
| 2001 | BigLove Film | Phoebe |
| 2000 | East of A Film | Daphne |
| 2000 | Gun Shy Film | Gloria Nesstra |
| 2000 | The Broken Hearts Club: A Romantic Comedy Film | Anne |
| 2000 | Other Voices Film | Anna |
| 1999 | The Big Tease Film | Monique |
| 1999 | Mystery, Alaska Film | Donna Biebe |
| 1999 | The West Wing TV | Kate Harper (48 ep) |
| 1999 | The Late Late Show with Craig Kilborn TV | Self - Guest (2 ep) |
| 1999 | True Crime Film | Michelle Ziegler |