The Liquidator is a 1965 British thriller film starring Rod Taylor as Brian "Boysie" Oakes, Trevor Howard, and Jill St. John. It was based on the first of a series of Boysie Oakes novels by John Gardner, The Liquidator. The film follows the 1964 novel closely. Due to a legal dispute, the film's original November 1965 release was delayed to the end of 1966, by which time the spy film craze was waning.