Maria O'Brien
Acting
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.
Magnum, P.I.
1980
Club Manager Applicant
Murder, She Wrote
1984
Lt. Abbe Esposito
The Love Boat
1977
Rita Almerez
CHiPs
1977
Patti Poncherello
Matlock
1986
Juanita Martinez
The Incredible Shrinking Woman
1981
Neighbor
Protocol
1984
Donna
Beyond Belief: Fact or Fiction
1997
Paranormal Investigator (segment "The Chess Game")
Howard
2018
Maria (archive footage)
Smile
1975
Maria
The Choirboys
1977
Carrier 2's Wife
Suddenly Susan
1996
Maria
Dead on Arrival
2018
Neighbor
Good Luck
1997
Peggy
In a Stranger's Hand
1991
Paula
Your Mother Wears Combat Boots
1989
Carla
In the Best Interest of the Child
1990
Carla
PSI Factor
1980
Shell Game
1975
Lola Ramirez
In Sickness and in Health
1992
Nancy