Bernadette O'Farrell (30 January 1924 – 26 September 1999) was an Irish actress. She was born in Birr, County Offaly, Irish Free State. She was married to the film writer, director and producer Frank Launder from 1950 until his death in 1997. They had two daughters together. She is best known for playing Maid Marian in the 1950s TV version of The Adventures of Robin Hood. She left the show in 1957, after 78 episodes, to avoid type-casting, and was replaced by Patricia Driscoll.