Mary Rose Byrne (born 24 July 1979) is an Australian actress. Byrne’s films include 28 Weeks Later, Sunshine, Knowing, Marie Antoinette and Get Him to the Greek. Rose plays one of the two main protagonists in the U.S. television series Damages as Ellen Parsons, opposite Glenn Close.
Byrne was in a relationship with Australian writer, director and actor Brendan Cowell for over six years. For much of the time their relationship was maintained at long-distance, with work commitments meaning they were often on separate continents. Cowell moved from Sydney to New York City, following Byrne's success on Damages. The relationship ended in January 2010. Rose has been known to family and close family friends as Chabs after a family cat she had in her youth named Chablis, after the wine, a favourite of her native Australia.
Previously Rose dated Australian writer/director Gregor Jordan, who directed her in Two Hands.
Rose landed her first role in a movie, Dallas Doll (1994), when she was 15 years old.
Since then, Rose has appeared in a variety of Australian televisions shows including "Heartbreak High" (1994), "Echo Point" (1995), and the film Two Hands (1999) alongside Heath Ledger. After this, she appeared in various movies like The Date (1999), My Mother Frank (2000), and Clara Law's The Goddess of 1967 (2000) for which Rose obtained the Female Volpi Cup at the Venice Festival in 2000.
Byrne’s first experience on a big-budget movie came when she played handmaiden, Dormé, to Natalie Portman, Padmé Amidala, in Star Wars: Episode II - Attack of the Clones (2002). In 2003, she starred, coincidentally, as Rose Mortmain in the adaptation of Dodie Smith's I Capture the Castle (2003). In 2004, she acted in Wicker Park (2004) with Diane Kruger and Josh Hartnett. Here, she heard Wolfgang Petersen was looking for an actress for Briseis in his next movie Troy (2004) with Brad Pitt, she got the part and was recognised as one of the most promising actresses in Hollywood.
After Troy (2004), Rose played Edith in a TV adaptation of "Casanova" (2005). In September 2005, she started to act in Sunshine (2007), a Danny Boyle movie, where she plays the pilot in a space mission.