Maria O'Brien
Born in Los Angeles, California, USA — Aug 14 1950• Died Feb 24 2026
Connect
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.
Photos
No photos available
Maria O'Brien's Credits
Browse acting and crew credits across movies and TV — filter and sort to find specific roles.
Murder, She Wrote
Lt. Abbe Esposito
Magnum, P.I.
Club Manager Applicant
The Love Boat
Rita Almerez
Beyond Belief: Fact or Fiction
Paranormal Investigator (segment "The Chess Game")
Matlock
Juanita Martinez
CHiPs
Patti Poncherello
Suddenly Susan
Maria
Howard
Maria (archive footage)
For the People
Judge
Smile
Maria
In a Stranger's Hand
Paula
Protocol
Donna
The Choirboys
Carrier 2's Wife
In Sickness and in Health
Nancy
Shell Game
Lola Ramirez
The Incredible Shrinking Woman
Neighbor
In the Best Interest of the Child
Carla
Good Luck
Peggy
Promised a Miracle
Dead on Arrival
Neighbor
Your Mother Wears Combat Boots
Carla
PSI Factor