Maria O'Brien
Maria O'Brien is credited on 7 movies and 8 TV shows, best known by TMDB votes for Murder, She Wrote, Magnum, P.I. and The Love Boat.
Born August 14, 1950 in Los Angeles, California, USA; died February 24, 2026.
Filmography · 15 titles
US streaming apps shown for the 12 best-known titles, checked October 6, 2026. Tap any title for where it streams and what it costs.
Murder, She Wrote
1984 · TV show
On Philo
Magnum, P.I.
1980 · TV show
Not on a US subscription app
The Love Boat
1977 · TV show
On Paramount+ and REELZ+
CHiPs
1977 · TV show
On Prime Video
Matlock
1986 · TV show
On Prime Video
The Incredible Shrinking Woman
1981 · Movie
Not on a US subscription app
Protocol
1984 · Movie
Free with ads on Hoopla
Beyond Belief: Fact or Fiction
1997 · TV show
On Peacock and Prime Video
Howard
2018 · Movie
On Disney+
Smile
1975 · Movie
Not on a US subscription app
Suddenly Susan
1996 · TV show
On Howdy
The Choirboys
1977 · Movie
Not on a US subscription app
Jack & Jill
1999 · TV show
Dead on Arrival
2018 · Movie
Good Luck
1997 · Movie
About 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...
Biography from TMDB, written by its community.