The Great Gambler is a 1979 Indian crime action film directed by Shakti Samanta. The film stars Amitabh Bachchan, Zeenat Aman, Neetu Singh. It was based on the Bengali novel Great Gambler by Vikramaditya.

The film's story is based on international gangsters, spies, and secret agents of different countries' intelligence agencies and their undercover operations. This film had high production costs with a significant portions of it being shot in international locations including Cairo, Lisbon, Venice and Rome, and in India, many scenes were shot in Goa. The film was a box office average on initial release due to high distribution price but has been widely appreciated for its action, direction, and cinematography. Later it became profitable on repeat releases and attained cult status.