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.

Kim Jong Il was a North Korean politician who was the second supreme leader of North Korea. He led North Korea from the death of his father Kim Il Sung in 1994 until his death in 2011, when he was succeeded by his son, Kim Jong Un. Afterwards, Kim Jong Il was declared Eternal General Secretary of the WPK.