Half Moon Street is a 1986 British-American erotic thriller film directed by Bob Swaim and starring Sigourney Weaver, Michael Caine, Keith Buckley, and P. J. Kavanagh. The film is about an American woman working at a British escort service who becomes involved in the political intrigues surrounding one of her clients. Half Moon Street was the first RKO Pictures solo feature film produced in almost a quarter-century. The previous one was Jet Pilot, made in 1957.