Mervyn Ian Guy Hamilton, DSC was an English film director. He directed 22 films from the 1950s to the 1980s, including four James Bond films.

The Third Man is a 1949 film noir directed by Carol Reed, written by Graham Greene, and starring Joseph Cotten, Alida Valli, Orson Welles and Trevor Howard, set in post-war Vienna. The film centres on American Holly Martins (Cotten) who arrives in the city to accept a job with his friend Harry Lime (Welles), only to learn that Lime has died. Martins decides to stay in Vienna and investigate his death.