Nina Siemaszko
Acting
68
Acting Credits
Biography
Antonina Jadwiga Siemaszko (born July 14, 1970) is an American actress, best known for her film roles in Little Noises (1991), The Saint of Fort Washington (1993), and for her role as Eleanor Bartlet in The West Wing (2001–2006). Siemaszko was born in Chicago. Her father, Konstanty Siemaszko, was a Polish-born Roman Catholic, and a survivor of the Polish Underground and the Sachsenhausen concentration camp. He escaped to the United Kingdom where he met Nina's mother, Collette McAllister. One o...
Known For
Filmography
The Paper
2025
Hailey Dean Mysteries: A Will to Kill
2018
as Olivia
The Hatred
2017
as Miriam
Togetherness
2015
as Lindsay
The Bling Ring
2013
as Vegas Detective (Female)
Monday Mornings
2013
The Artist
2011
as Admiring Woman
Past Life
2010
as Sharon Moody
The Haunting of Molly Hartley
2008
as Dr. Emerson
Eli Stone
2008
as Katie Bochner
Mystery Woman: In the Shadows
2007
as Cassie Hillman
Private Practice
2007
as Kathleen
Saving Grace
2007
as Heather
Mystery Woman: Redemption
2006
as Cassie Hillman
Mystery Woman: Oh Baby
2006
as Cassie Hillman
Mystery Woman: At First Sight
2006
as Cassie Hillman
Mystery Woman: Wild West Mystery
2006
as Cassie Hillman
Mystery Woman: Game Time
2005
as Cassie Hillman
Mystery Woman: Vision of a Murder
2005
as Cassie Hillman
Mystery Woman: Mystery Weekend
2005
as Cassie Hillman
Mystery Woman: Sing Me a Murder
2005
as Cassie Hillman
Mystery Woman: Snapshot
2005
as Cassie Hillman
Grey's Anatomy
2005
as Kate Carlson
A Carol Christmas
2003
as Roberta
Cold Case
2003
as Julie Vera
Without a Trace
2002
as Celia Cutler
Law & Order: Criminal Intent
2001
as Claudia Duffy
The Guardian
2001
as Suzanna Clemons
Sleep Easy, Hutch Rimes
2000
as Holly Proudfit
The Darkling
2000
as Marla Obold
CSI: Crime Scene Investigation
2000
as Linley Parker
The Huntress
2000
The Big Tease
1999
as Betty Fuego
Goodbye Lover
1999
as Newscaster
Jakob the Liar
1999
as Rosa Frankfurter
Judging Amy
1999
as Christy Wolinsky
The West Wing
1999
as Ellie Bartlet
Sports Night
1998
as Holly
More Tales of the City
1998
as Mona Ramsey
Suicide Kings
1997
as Jennifer
Breast Men
1997
as Upset Lady at the Convention (uncredited)
Runaway Car
1997
as Jenny Todd
The Long Way Home
1997
as (voice)
George B.
1997
as Angela
Kiss & Tell
1997
as Shelly
Johns
1996
as Prostitute
The American President
1995
as Beth Wade
Sawbones
1995
as Jenny Sloan
Power of Attorney
1995
as Maria
Airheads
1994
as Suzzi
Floundering
1994
as Gal
Baby Brokers
1994
as Leeanne Dees
Chicago Hope
1994
as Gloria McKinnon
The Saint of Fort Washington
1993
as Tamsen, la fille de Rosario
Red Shoe Diaries 3: Another Woman's Lipstick
1993
as Trudy (archive footage)
Twenty Bucks
1993
as Bank Teller
Tales of the City
1993
Little Noises
1992
as Dolores
Sinatra
1992
as Mia Farrow
Red Shoe Diaries
1992
as Trudy
Wild Orchid II: Two Shades of Blue
1991
as Blue McDonald
Bed & Breakfast
1991
as Cassie
Lost Angels
1989
as Merilee
Tales from the Crypt
1989
as Stella Bishop
Tucker: The Man and His Dream
1988
as Marilyn Lee
License to Drive
1988
as Natalie Anderson
One More Saturday Night
1986
as Karen Lundahl
American Playhouse
1982
as Polly Stockman