Maria de Lourdes Villiers Farrow ( mə-REE-ə dee LOORDZ VIL-yərz FARR-oh; born February 9, 1945) is an American actress. She first gained notice for her role as Allison MacKenzie in the prime-time television soap opera Peyton Place and gained further recognition for her subsequent short-lived marriage to Frank Sinatra. She achieved her career breakthrough and international acclaim as the titular character in Roman Polanski's psychological horror film Rosemary's Baby (1968), receiving nominations for a BAFTA Award and a Golden Globe Award for Best Actress. She went on to appear in several films throughout the 1970s, such as Follow Me! (1972), The Great Gatsby (1974), and Death on the Nile (1978). Her younger sister is Prudence Farrow.
Farrow was in a relationship with actor-director Woody Allen from 1980 to 1992 and appeared in thirteen of his films beginning with A Midsummer Night's Sex Comedy (1982). She received Golden Globe Award nominations for her roles in Broadway Danny Rose (1984), The Purple Rose of Cairo (1985), and Alice (1990). She also acted in Hannah and Her Sisters (1986), Crimes and Misdemeanors (1989), and Husbands and Wives (1992).