Clash of the Titans is a 1981 fantasy adventure film directed by Desmond Davis and written by Beverley Cross, loosely based on the Greek myth of Perseus. Starring Harry Hamlin, Judi Bowker, Burgess Meredith, Maggie Smith and Laurence Olivier, the film features the final work of stop-motion visual effects artist Ray Harryhausen.

Co-produced between the United States and United Kingdom, it was theatrically released on June 12, 1981 and grossed $41 million at the North American box office, making it the eleventh-highest grossing film of the year. A novelization by Alan Dean Foster was also published in 1981. A 3D remake of the same name was released by Warner Bros. on April 2, 2010.