Key Highlights
- Maria O'Brien died on February 24, 2026, at the age of 75.
- She was known for roles in films including 'Smile' (1975) and 'Protocol' (1984).
- O'Brien served as an acting coach on 'Days of Our Lives.'.
- She was born into an acting family, with her father being Oscar-winner Edmund O’Brien.
- Her career spanned over six decades, featuring numerous TV appearances.


