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