Tatum Beatrice O'Neal is an American actress and author. She is the youngest person ever to win a competitive Academy Award, which she won at age 10 for her performance as Addie Loggins in Paper Moon opposite her father, Ryan O'Neal. She also starred in The Bad News Bears, in 1976, followed by Nickelodeon, and Little Darlings.
In 1986, O'Neal married the professional tennis player John McEnroe, with whom she had three children. The couple separated in 1992 and were divorced in 1994.