Joseph Stalin's cult of personality became a prominent feature of Soviet popular culture. Historian Archie Brown sets the celebration of Stalin's 50th birthday on 21 December 1929 as the starting point for his cult of personality. For the rest of Stalin's rule, the Soviet propaganda presented Stalin as an all-powerful, all-knowing leader, with Stalin's name and image appearing everywhere.

A cult of personality, or a cult of the leader, is the result of an effort which is made to create an idealized and heroic image of a glorious leader, often through unquestioning flattery and praise. Historically, it has developed through techniques of mass media, propaganda, spectacle, the arts, patriotism, and government-organized demonstrations and rallies. A cult of personality is similar to apotheosis, except that it is established by modern social engineering techniques, usually by the state or the party in one-party states and dominant-party states. Cults of personality often accompany the leaders of totalitarian or authoritarian governments. They can also be seen in some monarchies, theocracies, failed democracies and even in liberal democracies.