After two previous marriages ended in divorce, including a short-lived union with Frank Sinatra, she had a 12-year relationship where she and Woody Allen were lovers, but never married. They had one natural child together and adopted two others together. Farrow found naked pictures of one of her adopted daughters in Allen's apartment (adopted during her last marriage), ending her relationship with Allen. Mia has full custody of her children with Allen after Allen's effort to get custody were soundly denied in a well followed court case. Mia made claims of child abuse against Allen, but no charges were ever filed. All told Mia has had 15 children, 11 of them adopted. Mia's adopted children are from third world nations and often have special needs. One of her children died in 2000 after a long illness.
Allen and Farrow made 13 movies while they had a relationship together:
- A Midsummer Night's Sex Comedy (1982)
- Zelig (1983)
- Broadway Danny Rose (1984)
- The Purple Rose of Cairo (1985) - Woody Allen's favorite 
- Hannah and Her Sisters (1986)
- Radio Days (1987)
- September (1987)
- Another Woman (1988)
- Crimes and Misdemeanors (1989)
- New York Stories (1989)
- Alice (1990)
- Shadows and Fog (1992)
- Husbands and Wives (1992) 
After Nancy Pelosi's infamous ripping up of Donald Trump's 2020 State of the Union address, Mia tweeted her support to her disgraceful actions, in response to FNC contributor Ari Fleischer's question of why she would do that. Mia Farrow is the mother of Ronan Farrow, who participated in the Kavanaugh smear campaign.