
Dagmara Domińczyk (doh-MEEN-chik, born July 17, 1976) is a Polish-American actress and author. She's best known for her roles as Mercedès Iguanada in The Count of Monte Cristo (2002), Tania Asher in Rock Star (2001), Agnes Gebhard in Kinsey (2004), Marguerite in The Five People You Meet in Heaven (2004), Katrina on WB's The Bedford Diaries, Suzanne in Running with Scissors (2006), Belva in The Immigrant (2013), Elizabeth Taylor in Big Stone Gap (2013), Stacy in Let's Kill Ward's Wife (2014), Karolina Novotney on HBO's Succession, Ellen in The Assistant (2020), Erika Jensen on HBO's We Own This City (2022), and Elle Sellwyn on AppleTV's Hello Tomorrow! (2023).
In 2013, she released her novel The Lullaby of Polish Girls.
She has been married to actor Patrick Wilson since 2005 and they have two sons. Her sisters are actress Marika Domińczyk and actress Veronika Domińczyk.

Insidious: The Red Door
2023 · as Priest (voice)

The Count of Monte Cristo
2002 · as Mercedes Iguanada

Bottoms
2023 · as Mrs. Callahan

Miller's Girl
2024 · as Beatrice June Harker

Priscilla
2023 · as Ann Beaulieu

Rock Star
2001 · as Tania Asher, Steel Dragon PR

The Lost Daughter
2021 · as Callie

The Assistant
2020 · as Ellen

The Immigrant
2013 · as Belva

Lonely Hearts
2006 · as Delphine Downing

Kinsey
2004 · as Agnes Gebhard

Tony
2026

Keeping the Faith
2000 · as Claire

Big Stone Gap
2014 · as Elizabeth Taylor

Bad Apple
2004 · as Gina

Higher Ground
2011 · as Annika

The Letter
2012 · as Elizabeth

Trust the Man
2005 · as Pamela