Trivia: Yvonne Elliman and Barry Dennen, as Mary Magdalene and Pontius Pilate, respectively, are the only cast members who appeared on the concept album, in the original staging of the show on Broadway, and in the feature film.
Trivia: The topless girl at the mobsters' pool party is future "Three's Company" TV star Suzanne Somers.
Trivia: When Terry is being introduced, he drives up on his scooter, and has quite a bit of trouble parking it. This is because Charles Martin Smith actually didn't know how to drive a stick shift. The small accident he has is real, you can see him crash, look up towards the camera (at Lucas), and continue the scene. Lucas motioned for him to continue, because the crash looked so interesting.
Trivia: The Jackal demands $500,000 (US) to assassinate De Gaulle, which seems like a modest amount for such a dangerous job. However, when you take inflation into account that was the equivalent in 2019 money of over $4m. No wonder his putative employers are surprised.
Trivia: At the end of the film when the Stranger (Clint Eastwood) is riding out of Lago, he passes a midget who is painting a name on a tombstone. In the next shot you see two more tombstones to the left. The names on these are "Sergio Leone" and "Don Siegel."
Trivia: This was Edward G. Robinson's last film.
Trivia: Christopher Lee did this movie for free, and considers it one of his best roles ever.
Trivia: Dustin Hoffman wore contact lenses so he could see correctly wearing those thick glasses.
Trivia: Despite repeated citations in print, (as recently as the 2001 edition of 'Film Facts' by Patrick Robertson), both Donald Sutherland and Julie Christie maintain that the sex scene between them was, in fact simulated, and they did not actually have sex, as has been widely reported.
Trivia: Actress Tatum O'Neal, at age ten, became the youngest person to won an Oscar for an acting role. This excludes Shirley Temple, who won an honorary Oscar at age six in 1935.
Trivia: The two boys who are sitting under the lamppost outside Holly's house are Martin Sheen's two sons, Charlie Sheen and Emilio Estevez.