Charles Patrick Ryan O'Neal (April 20, 1941 – December 8, 2023) was an American actor and former boxer. O'Neal trained as an amateur boxer before beginning his career in acting in 1960. In 1964, he landed the role of Rodney Harrington on the ABC nighttime soap opera Peyton Place. The series was an instant hit and boosted O'Neal's career.

He later found success in films, most notably Love Story (1970), for which he received Academy Award and Golden Globe nominations as Best Actor, Peter Bogdanovich's What's Up, Doc? (1972) and Paper Moon (1973), Stanley Kubrick's Barry Lyndon (1975), Richard Attenborough's A Bridge Too Far (1977), and Walter Hill's The Driver (1978).

From 2005 to 2017, he had a recurring role in the Fox TV series Bones as Max, the father of the show's protagonist.