
Acting · 55 years old
Chicago, Illinois, USA
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 of her brothers is actor Casey Siemaszko. Her other brother, Corky, is a writer for the Daily News and a reporter at NBC News. She attended The Theatre School at DePaul University. She played an undercover cop in Reservoir Dogs featured in a scene that wound up on the cutting room floor ensuring that the work became a rare example of a film containing no dialogue delivered by an actress. It was released on DVD. She played Mia Farrow in the CBS miniseries Sinatra. She played the leading role in Wild Orchid II: Two Shades of Blue.

Red Shoe Diaries 3: Another Woman's Lipstick
Trudy (archive footage)

The West Wing
Ellie Bartlet

Grey's Anatomy
Kate Carlson

Tales from the Crypt
Stella Bishop

Cold Case
Julie Vera

Tales of the City

CSI: Crime Scene Investigation
Linley Parker

Law & Order: Criminal Intent
Claudia Duffy

Sinatra
Mia Farrow

Private Practice
Kathleen

Judging Amy
Christy Wolinsky

The Artist
Admiring Woman

Mystery Woman: Mystery Weekend
Cassie Hillman

Saving Grace
Heather

Sports Night

More Tales of the City
Mona Ramsey

Chicago Hope
Gloria McKinnon

Without a Trace
Celia Cutler

The Long Way Home
(voice)

Monday Mornings