- Made his start in movies as a stunt man.
- His father, Charles, was a Hollywood screenwriter.
- Was a talented Golden Gloves boxer in his teens.
- Selected for his role in Love Story (for which he won an Oscar) out of a pool of 300 hopefuls.
- Considered for the role of Michael Corleone in The Godfather, which eventually went to Al Pacino.
- Longtime partner of 1970s sex symbol Farrah Fawcett, with whom he had a son.
- 1970, Oscar — Best Performance by an Actor in a Leading Role: Nominee
- 1974, Golden Globe — Best Performance by an Actor in a Motion Picture - Musical or Comedy: Nominee
- 1971, Golden Globe — Best Performance by an Actor in a Motion Picture - Drama: Nominee
- Farrah Fawcett — Ex-significant Other
- Tatum O'Neal — Daughter
- Griffin O'Neal — Son
- Redmond O'Neal — Son
- Leigh Taylor-Young — Ex-wife
- Patrick O'Neal — Son
- Joanna Cook Moore — Ex-wife
Season 4, Episode 26
- Birth Name: Charles Patrick Ryan O'Neal
- Birth Place: Los Angeles, CA
- Birthday: April 20, 1941, Aries
- Profession: Actor