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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Known For
Invitation to a Murder
Miranda Green
2023
Deserted
Jae
2016
Swat: Unit 887
Agent Melanie Hamlin
2015
Operator
Pamela Miller
2015
Checkmate
Lauren Campbell
2015
American Beach House
Ms. Maureen
2015
L.A. Slasher
The Actress
2015
The Hoarder
Ella
2015
Zombie Killers: Elephant's Graveyard
Toni
2015
Hope Lost
Alina
2015
Throwdown
Lisa Thoams
2014
A Prayer for Rain
Eva
2014
Starcrossed
Kat
2014
Mining for Ruby
Jessica King
2014
A Resurrection
Jessie
2013
I Will Follow You Into the Dark
Sophia Monet
2012
Apartment 1303 3D
Lara Slate
2012
Cyberstalker
Aiden Ashley
2012
Beauty and the Least
Amy Warner
2012
You and I
Lana
2011
Don't Fade Away
Katherine Morrison
2010
Homecoming
Shelby Mercer
2009
Walled In
Sam Walczak
2009
Assassination of a High School President
Francesca Fachini
2008
St Trinian's
JJ French
2007
Virgin Territory
Pampinea
2007
Closing the Ring
Young Ethel Ann
2007
The Oh in Ohio
Kristen Taylor
2006
Octane
Natasha 'Nat' Wilson
2003
A Ring of Endless Light
Vicky Austin
2002
Tart
Grace Bailey
2001
Julie Johnson
Lisa Johnson
2001
Lost and Delirious
Mary 'Mouse' Bedford
2001
Paranoid
Theresa
2000
Skipped Parts
Maurey Pierce
2000
The Sixth Sense
Kyra Collins
1999
Pups
Rocky
1999
An Off-Beats Valentine's
Betty Ann Bongo (voice)
1999
New York Crossing
Drummond
1996
Murder at the Embassy
Miranda Green
Spree
London
2020
The Cat and the Moon
Jessica Peterson
2019
The Hills: New Beginnings
Herself · (12 episodes)
2019
Painkillers
The Girl / Sarah Mendelsohn
2019
The Basement
Kelly Owen
2018
The Toybox
Samantha
2018
Papa
Jennifer
2018
Monsters at Large
Katie Parker
2018
Ouija House
Samantha
2018
The Joneses Unplugged
Rebecca Jones
2017
The Malevolent
Ms Lowell
2016
Executor
Tara
2016
Recovery Road
Olivia · (1 episode)
2016
The Beautiful Life: TBL
Sonja Stone · (5 episodes)
2009
Chris Moyles' Quiz Night
Self · (1 episode)
2009
Dancing with the Stars
Self - Contestant · (3 episodes)
2005
The Friday Night Project
Self - Host · (1 episode)
2005
On Air with Ryan Seacrest
Self - The O.C. · (1 episode)
2004
The Ellen DeGeneres Show
Self · (1 episode)
2003
The O.C.
Marissa Cooper · (76 episodes)
2003
Punk'd
Self · (1 episode)
2003
Jimmy Kimmel Live!
(1 episode)
2003
Fastlane
Simone Collins · (1 episode)
2002
Frankie & Hazel
Francesca 'Frankie' Humphries
2000
Once and Again
Katie Singer · (8 episodes)
1999
Notting Hill
12-year-old Actress
1999
DragonMan: The Adventures of Luke Starr
Crystal Starr
Lawn Dogs
Devon
1997
Sleepwalker
Joelle
Bad News on the Doorstep
The Tony Danza Show
Self · (1 episode)
2004
Law & Order: Special Victims Unit
Gladys Dalton · (1 episode)
1999
The View
Self · (1 episode)
1997
KaBlam!
Betty Ann Bongo (voice) · (26 episodes)
1996
E! True Hollywood Story
Self (archive footage) · (1 episode)
1996
Late Night with Conan O'Brien
Self - Guest · (1 episode)
1993
LIVE with Kelly and Mark
(1 episode)
1988
Neighbours
Reece Sinclair · (60 episodes)
1985
Entertainment Tonight
Self · (4 episodes)
1981