Mischa Anne Marsden Barton (born 24 January 1986) is a British-American film, television, and stage actress. She began her career onstage, appearing in Tony Kushner’s Slavs! and took the lead in James Lapine’s Twelve Dreams at New York City’s Lincoln Center. She made her screen debut with a guest appearance on the American soap opera All My Children (1995) and voicing Betty Ann Bongo on the Nickelodeon cartoon series KaBlam! (1996–97). Her first significant film role was as the protagonist of Lawn Dogs (1997), a drama co-starring Sam Rockwell. She appeared in major pictures such as the romantic comedy Notting Hill (1999) and M. Night Shyamalan’s psychological thriller The Sixth Sense (1999). She also starred in the indie crime drama Pups (1999).
Barton later appeared in the independent drama Lost and Delirious (2001) and guest-starred as Evan Rachel Wood’s girlfriend on ABC’s Once and Again (2001–02). She played Marissa Cooper in the Fox television series The O.C.(2003–2006), for which she received two Teen Choice Awards. The role brought Barton into mainstream fame, and Entertainment Weekly named her the “It Girl” of 2003.
Barton has since appeared in the comedy remake St Trinian’s (2007), the Richard Attenborough–directed drama Closing the Ring (2007) and Assassination of a High School President (2008). She returned to television, starring in the short-lived Ashton Kutcher-produced CW series The Beautiful Life (2009).
In 2012, she returned to the stage, performing in the Irish production of Steel Magnolias. She also appeared alongside Martin Sheen in Bhopal: A Prayer for Rain (2014). She has garnered critical praise for her roles in independent films, with the Los Angeles Times praising her “standout” performance in Starcrossed (2014). Barton was cast in the first season of the MTV series The Hills: New Beginnings (2019–2021), a reboot of The Hills. In 2023, she was cast in an extended guest role for the rebooted Australian soap opera Neighbours on Amazon Freevee and Network 10.
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1999 • TV
2025 • Movie
1997 • TV
2003 • TV
2005 • TV
2007 • Movie
as Miranda Green
as Young Ethel Ann
as Pampinea
as Ella
as Kyra Collins
as Grace Bailey
as Francesca 'Frankie' Humphries
as 12-year-old Actress
as Jae
as Aiden Ashley
as Lana
as Kat
as Lauren Campbell
as Pamela Miller
as Natasha 'Nat' Wilson
as JJ French
as Rocky
as Miranda Green
as Shelby Mercer
as Betty Ann Bongo (voice)
as Gladys Dalton
1 episodes
as Self
1 episodes
as Self
1 episodes
as Self - Contestant
3 episodes
as Self - Guest
1 episodes
as Marissa Cooper
76 episodes
1 episodes
as Self
1 episodes
as Self
1 episodes
as Self
1 episodes
as Self - The O.C.
1 episodes
as Reece Sinclair
60 episodes
as Simone Collins
1 episodes
as Self
4 episodes
as Katie Singer
8 episodes
as Olivia
1 episodes
as Self
12 episodes
as Self
1 episodes
as Betty Ann Bongo (voice)
26 episodes
as Sonja Stone
5 episodes
