Maria O'Brien

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.

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  Murder, She Wrote

  Lt. Abbe Esposito

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  The Love Boat

  Rita Almerez

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  Magnum, P.I.

  Club Manager Applicant

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  Matlock

  Juanita Martinez

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  Beyond Belief: Fact or Fiction

  Paranormal Investigator (segment "The Chess Game")

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  CHiPs

  Patti Poncherello

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  Jack & Jill

  Fortune Teller

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  Suddenly Susan

  Maria

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  Smile

  Maria

• For the People

  Judge

• 2018HowardMaria (archive footage)
• 2018Dead on ArrivalNeighbor
• 2002For the PeopleJudge
• 1999Jack & JillFortune Teller
• 1997Beyond Belief: Fact or FictionParanormal Investigator (segment "The Chess Game")
• 1997Good LuckPeggy
• 1996Suddenly SusanMaria
• 1992In Sickness and in HealthNancy
• 1991In a Stranger's HandPaula
• 1990In the Best Interest of the ChildCarla
• 1989Your Mother Wears Combat BootsCarla
• 1988Promised a Miracle
• 1986MatlockJuanita Martinez
• 1984ProtocolDonna
• 1984Murder, She WroteLt. Abbe Esposito
• 1981The Incredible Shrinking WomanNeighbor
• 1980Magnum, P.I.Club Manager Applicant
• 1980PSI Factor
• 1977The ChoirboysCarrier 2's Wife
• 1977The Love BoatRita Almerez
• 1977CHiPsPatti Poncherello
• 1975SmileMaria
• 1975Shell GameLola Ramirez