Patricia Rooney Mara (born 1985) is an American actress. Her films in 2009 include Dare, and the upcoming The Winning Season and Tanner Hall. In 2010, she appeared in Youth in Revolt and starred in A Nightmare on Elm Street, a remake of the 1984 horror film.
Mara will next be seen in The Social Network, a film by David Fincher about the founding of Facebook. She has also been cast as Lisbeth Salander, the lead in Fincher's The Girl with the Dragon Tattoo, an English-language remake of the Swedish smash hit film of the same name.