Mary McCormack
Actor
Born Feb 8, 1969 · Plainfield, New Jersey, USA
Active 1990–present
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.
Filmography
Vicious (2025) — MotherThe Pitt (2025) — Dr. Linda ConleyK-PAX (2001) — Rachel Powell1408 (2007) — Lilly EnslinER (1994) — DebbieThe Newsroom (2012) — Molly LevyThe West Wing (1999) — Kate HarperDeep Impact (1998) — Andrea BakerLaw & Order (1990) — Rickie the BartenderMiracle on 34th Street (1994) — Myrna FoyScandal (2012) — Lisa ElliotLaw & Order: Criminal Intent (2001) — Mary ShannonTrue Crime (1999) — Michelle ZieglerScooby-Doo! WrestleMania Mystery (2014) — Ms. Richards (voice)Unpregnant (2020) — Debra ClarkePrivate Parts (1997) — Alison SternHeels (2021) — Willie DayThe L Word: Generation Q (2019) — Anne Finley54 (1998) — New Year's Eve Wife (uncredited)Mystery, Alaska (1999) — Donna BiebeHouse of Lies (2012) — Denna AltshulerWill & Grace (2017) — JanetIn Plain Sight (2008) — Mary ShannonRight at Your Door (2006) — Lexi