Diane Cilento was an Australian actress and writer. She is best known for her film roles in Tom Jones (1963), which earned her an Academy Award nomination, Hombre (1967) and The Wicker Man (1973). She also received a Tony Award nomination for her performance as Helen of Troy in the play Tiger at the Gates.

Tom Jones is a 1963 British period comedy film, an adaptation of Henry Fielding's classic 1749 novel The History of Tom Jones, a Foundling. It is directed by Tony Richardson from a screenplay written by John Osborne, and stars Albert Finney as the titular character. The cast also features Susannah York, Hugh Griffith, Edith Evans, Joan Greenwood, Diane Cilento, and David Warner in his film debut.