This list details national leaders since 1900 who ruled for 30 years or more, and were not self-described royalty. It also combines all national leader level offices held concurrently or consecutively by each individual.
000000001919-04-01-00001 April 1919 (1st time) 000000001932-03-09-00009 March 1932 (2nd time) 000000001951-06-13-000013 June 1951 (3rd time) 000000001957-03-20-000020 March 1957 (4th time) 000000001959-06-25-000025 June 1959 (5th time)
000000001922-01-09-00009 January 1922 (1st time) 000000001948-02-18-000018 February 1948 (2nd time) 000000001954-06-02-00002 June 1954 (3rd time) 000000001959-06-23-000023 June 1959 (4th time) 000000001973-06-24-000024 June 1973 (5th time)
^After the first time Chiang Kai-shek stepped down in December 1931, his power was shared by Hu Hanmin, Wang Jingwei, and Lin Sen among others. After the second time he left his state position in January 1949, Chiang was succeed by then Vice PresidentLi Zongren. However, Chiang was still the de facto leader of Mainland China until he and the Kuomintang moved to Taiwan in December 1949.
^For purposes of this article, 20 October 2011 is considered to be the date that Gaddafi left office. Other dates might have been chosen.
On 15 July 2011, at a meeting in Istanbul, more than 30 governments, including the United States, withdrew recognition from Gaddafi's government and recognised the National Transitional Council (NTC) as the legitimate government of Libya.
On 23 August 2011, during the Battle of Tripoli, Gaddafi lost effective political and military control of Tripoli after his compound was captured by rebel forces.
On 25 August 2011, the Arab League proclaimed the anti-Gaddafi National Transitional Council to be "the legitimate representative of the Libyan state".
On 20 October 2011, Gaddafi was captured and killed near his hometown of Sirte.
In a ceremony on 23 October 2011, officials of the interim National Transitional Council declared, "We declare to the whole world that we have liberated our beloved country, with its cities, villages, hill-tops, mountains, deserts and skies."
^Nazarbayev declared the independence of Kazakhstan from the Soviet Union on December 16, 1991.
^After leaving office as Prime Minister, Lee was given the emeritus positions of Senior Minister (1990–2004) and Minister Mentor (2004–2011). Lee still had effective influence in the Cabinet until 2011.