About
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.
Known for
The Love BoatSeries • 1977
Murder, She WroteSeries • 1984
Magnum, P.I.Series • 1980
MatlockSeries • 1986
Beyond Belief: Fact or FictionSeries • 1997
Jack & JillSeries • 1999
CHiPsSeries • 1977
Suddenly SusanSeries • 1996
SmileMovie • 1975
HowardMovie • 2018
The Incredible Shrinking WomanMovie • 1981
The ChoirboysMovie • 1977
ProtocolMovie • 1984
Dead on ArrivalMovie • 2018