Maria O'Brien
Biography
Maria O'Brien (August 14, 1950 – February 24, 2026) was an American actress and acting coach. She was the daughter of actors Edmond O'Brien and Olga San Juan, and sister of voice actor Brendan O'Brien. She was best known as a character actress, but she also had a recurring role on a few television series, such as Ave 43 and The Life and Times of Eddie Roberts. She was also an acting coach on soap operas, such as Days of Our Lives, Sunset Beach, and Passions.
Also Known As
Movie Appearances

Howard
as Maria (archive footage)
2018

Smile
as Maria
1975

PSI Factor
1980

In a Stranger's Hand
as Paula
1991

Your Mother Wears Combat Boots
as Carla
1989

In the Best Interest of the Child
as Carla
1990

In Sickness and in Health
as Nancy
1992

Protocol
as Donna
1984

Shell Game
as Lola Ramirez
1975

Promised a Miracle
1988

The Choirboys
as Carrier 2's Wife
1977

Good Luck
as Peggy
1997

Dead on Arrival
as Neighbor
2018

The Incredible Shrinking Woman
as Neighbor
1981
TV Appearances

Beyond Belief: Fact or Fiction
as Paranormal Investigator (segment "The Chess Game")
1997

CHiPs
as Patti Poncherello
1977

The Love Boat
as Rita Almerez
1977

Murder, She Wrote
as Lt. Abbe Esposito
1984

Suddenly Susan
as Maria
1996

Magnum, P.I.
as Club Manager Applicant
1980

Matlock
as Juanita Martinez
1986
For the People
as Judge
2002