Kim Jong-un; also romanised as Kim Jong-eun or Kim Jung-eun; (born 8 January 1983 or 1984); is the incumbent supreme leader of North Korea; as of 28 December 2011. He was officially declared the supreme leader following the state funeral for his father; Kim Jong-il. He is the third and youngest son of his deceased predecessor Kim Jong-il and his consort Ko Young-hee. From late 2010; Kim Jong-un was viewed as heir apparent to the leadership of the nation; and following his father's death; he was announced as the 'Great Successor' by North Korean state television.

He is a Daejang in the Korean People's Army; a military rank equivalent to that of a General. Kim is said to have studied computer science privately in North Korea. He obtained two degrees; one in physics at Kim Il Sung University and another at the Kim Il Sung Military Academy. At 28 years of age; he is the world's youngest head of state.