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This article contains various lists of state leaders organized by age, defined as heads of state and/or heads of government.

People currently serving as head of state and/or head of government, a party leader of a one-party state, or a representative of a head of state.
| Rank | Name | Position | Assumed office | Born | Age |
|---|---|---|---|---|---|
| 1 | Paul Biya | President of Cameroon | 1982[2] | 13 February 1933 | 92 years, 183 days |
| 2 | Mahmoud Abbas | President of the Palestinian National Authority, President of the State of Palestine |
2005[3] | 15 November 1935 | 89 years, 273 days |
| 3 | Salman bin Abdulaziz al Saud | King of Saudi Arabia | 2015[4] | 31 December 1935 | 89 years, 227 days |
| 4 | Harald V | King of Norway[5] | 1991 | 21 February 1937 | 88 years, 175 days |
| 5 | Ali Khamenei | Supreme Leader of Iran | 1989[6] | 19 April 1939 | 86 years, 118 days |
| 6 | Jean-Lucien Savi de Tové | President of Togo | 2025 | 7 May 1939 | 86 years, 100 days |
| 7 | Muhammad Yunus | Chief Adviser of Bangladesh | 2024 | 28 June 1940 | 85 years, 48 days |
| 8 | Mishal I | Emir of Kuwait | 2023 | 27 September 1940 | 84 years, 322 days |
| 9 | Michael D. Higgins | President of Ireland | 2011 | 18 April 1941 | 84 years, 119 days |
| 10 | Sergio Mattarella | President of Italy | 2015 | 23 July 1941 | 84 years, 23 days |

| Rank | Name | Position | Last year in office (reason term ended) |
Age at end |
|---|---|---|---|---|
| 1 | Giovanni Paolo Lascaris | Grand Master of the Knights Hospitaller | 1657 (death) | 97 years, 47 days |
| Ruler of Malta | ||||
| 2 | Elizabeth II | Queen of the United Kingdom and other Commonwealth realms[7] | 2022 (death) | 96 years, 140 days |
| 3 | Prem Tinsulanonda | Regent of Thailand | 2016 (tenure ended) | 96 years, 97 days |
| 4 | George Tupou I | King of Tonga | 1893 (death) | 95 years, 76 days |
| 5 | Mahathir Mohamad | Prime Minister of Malaysia | 2020 (resigned) | 94 years, 235 days |
| 6 | Nicolò da Ponte | Doge of Venice | 1585 (death) | 94 years, 196 days |
| 7 | Malietoa Tanumafili II | O le Ao o le Malo of Samoa | 2007 (death) | 94 years, 127 days |
| 8 | Robert Mugabe | President of Zimbabwe | 2017 (resigned) | 93 years, 273 days |
| 9 | Beji Caid Essebsi | President of Tunisia | 2019 (death) | 92 years, 238 days |
| 10 | Paul Biya | President of Cameroon | Incumbent | 92 years, 183 days |

| Rank | Name | Position | Assumed office | Born | Age |
|---|---|---|---|---|---|
| 1 | Kristrún Frostadóttir | Prime Minister of Iceland | 2024 | 12 May 1988 | 37 years, 95 days |
| 2 | Ibrahim Traoré | President of the Patriotic Movement for Safeguard and Restoration of Burkina Faso | 2022 | 14 March 1988 | 37 years, 154 days |
| Interim President of Burkina Faso | 2022 | ||||
| 3 | Daniel Noboa | President of Ecuador | 2023 | 30 November 1987 | 37 years, 258 days |
| 4 | Milojko Spajić | Prime Minister of Montenegro | 2023 | 24 September 1987 | 37 years, 325 days |
| 5 | Jakov Milatović | President of Montenegro | 2023 | 7 December 1986 | 38 years, 251 days |
| 6 | Gabriel Boric | President of Chile | 2022 | 11 February 1986 | 39 years, 185 days |
| 7 | Yulia Svyrydenko | Prime Minister of Ukraine | 2025 | 25 December 1985 | 39 years, 233 days |
| 8 | Mohammed bin Salman | Prime Minister of Saudi Arabia | 2022 | 31 August 1985 | 39 years, 349 days |
| 9 | Mahamat Déby | President of Chad[8] | 2024 | 4 April 1984 | 41 years, 134 days |
| 10 | Assimi Goïta | President of Mali[9] | 2025 | 9 November 1983 | 41 years, 279 days |
| Rank | Name | Position | Assumed office | Age when assuming office |
|---|---|---|---|---|
| 1 | Alfonso XIII | King of Spain | 1886 | 0 days[1] |
| 2 | Sobhuza II | King of Swaziland | 1899 | 141 days |
| 3 | Fuad II | King of Egypt | 1952 | 192 days |
| 4 | Puyi | Emperor of China | 1908 | 2 years, 299 days |
| 5 | Rajendra | King of Nepal | 1816 | 2 years, 353 days |
| 6 | Isabella II | Queen of Spain | 1833 | 2 years, 354 days |
| 7 | Gyanendra | King of Nepal | 1950[10] | 3 years, 123 days |
| 8 | Guangxu | Emperor of China | 1875 | 3 years, 195 days |
| 9 | Faisal II | King of Iraq | 1939 | 3 years, 337 days |
| 10 | Pedro II | Emperor of Brazil | 1831 | 5 years, 126 days |
The following lists show the oldest people who have served office as state leader (not limited to their age while in office).

| Rank | Name | Position | In office | Born | Age |
|---|---|---|---|---|---|
| 1 | Guillermo Rodríguez | Acting President of Ecuador | 1972–1976 | 4 November 1923 | 101 years, 284 days |
| 2 | Tomiichi Murayama | Prime Minister of Japan | 1994–1996 | 3 March 1924 | 101 years, 165 days |
| 3 | Mahathir Mohamad | Prime Minister of Malaysia | 1981–2003; 2018–2020 | 10 July 1925 | 100 years, 36 days |
| 4 | Mohammad Hasan Sharq | Chairman of the Council of Ministers of Afghanistan | 1988–1989 | 17 July 1925 | 100 years, 29 days |
| 5 | Abdoulaye Wade | President of Senegal | 2000–2012 | 29 May 1926 | 99 years, 78 days |
| 6 | Valdas Adamkus | President of Lithuania | 1998–2003; 2004–2009 | 3 November 1926 | 98 years, 285 days |
| 7 | Raif Dizdarević | President of the Presidency of Yugoslavia | 1988–1989 | 9 December 1926 | 98 years, 249 days |
| 8 | Kim Yong-nam | Chairman of the Presidium of the Supreme People's Assembly of North Korea | 1998–2019 | 4 February 1928 | 97 years, 192 days |
| 9 | Arthur Foulkes | Governor-General of the Bahamas | 2010–2014 | 11 May 1928 | 97 years, 96 days |
| 10 | Péter Boross | Prime Minister of Hungary | 1993–1994 | 27 August 1928 | 96 years, 353 days |

| Rank | Name | Position | Born | Died | Age |
|---|---|---|---|---|---|
| 1 | Chau Sen Cocsal Chhum | Acting Prime Minister of Cambodia (1962) | 1905 | 2009 | 103 years, 143 days |
| 2 | Celâl Bayar |
|
1883 | 1986 | 103 years, 98 days |
| 3 | Antoine Pinay | Prime Minister of France (1952–1953) | 1891 | 1994 | 102 years, 348 days |
| 4 | André Prunet-Foch | French Viguier in Andorra (1977–1980) | 1914 | 2017 | 102 years, 211 days |
| 5 | Prince Naruhiko Higashikuni | Prime Minister of Japan (1945) | 1887 | 1990 | 102 years, 48 days |
| 6 | Babiker Awadalla | Prime Minister of Sudan (1969) | 1917 | 2019 | 101 years, 321 days |
| 7 | Willem Drees | Prime Minister of the Netherlands (1948–1958) | 1886 | 1988 | 101 years, 314 days |
| 8 | Guillermo Rodríguez | Acting President of Ecuador (1972–1976) | 1923 | Alive | 101 years, 284 days |
| 9 | Đỗ Mười | 1917 | 2018 | 101 years, 241 days | |
| 10 | Zhang Qun | Premier of the Republic of China (1947–1948) | 1889 | 1990 | 101 years, 219 days |