The Diamond Arm is a Soviet crime comedy film made by Mosfilm and first released in 1969. The film was directed by director Leonid Gaidai and starred several famous Soviet actors, including Yuri Nikulin, Andrei Mironov, Anatoli Papanov, Nonna Mordyukova and Svetlana Svetlichnaya. The Diamond Arm has become a Russian cult film and is considered by many Russian contemporaries to be one of the finest comedies of all time. It was also one of the all-time leaders at the Soviet box office with over 76,700,000 theatre admissions in the Soviet era. The plot of the film was based on a real-life news item about Swiss smugglers who tried to transport jewels in an orthopedic cast.

Mosfilm is a film studio which is among the largest and oldest in the Russian Federation and in Europe. Founded in 1924 in the USSR as a production unit of that nation's film monopoly, its output includes most of the more widely acclaimed Soviet-era films, ranging from works by Andrei Tarkovsky and Sergei Eisenstein, to Red Westerns, to the Akira Kurosawa co-production Dersu Uzala and War and Peace.