List of state leaders in 1840
1839 state leaders - Events of 1840 - 1841 state leaders - State leaders by year
See also:
- List of religious leaders in 1840
- List of international organization leaders in 1840
- List of colonial governors in 1840
Africa
- Ashanti Confederacy - Kwaku Dua I Panyin, Asantehene (1834-1867)
- Buganda - Suna II, King of Buganda (1836-1856)
- Bunyoro - Nyabongo II, Omukama of Bunyoro (1835-1848))
- Burundi - Ntare IV Rugamba, King of Burundi (1796-1852)
- Dahomey - Gézo, King of Dahomey (1818-1856)
- Rwanda - Mutara II Rwogera, King of Rwanda (1830-1853)
- Sokoto Caliphate
- Caliph - Abu Bakr Atiku, Sokoto Caliph (1837-1842)
- Grand Vizier - Gidago dan Laima, Sokoto Grand Vizier (1817-1842)
- Zulu -
Asia
- Afghanistan - Shoja Shah, King of Afghanistan (1839-1842)
- China (Qing Dynasty) - Daoguang, Emperor of China (1821-1850)
- Japan
- Monarch - Ninko, Emperor of Japan (1817-1846)
- Shogun (Tokugawa) - Tokugawa Ieyoshi, Shogun of Japan (1837-1853)
Europe
- Abkhazia - Mikheil, Prince of Abkhazia (1822-1864)
- Andorra -
- Simó Rojas de Guardiola i Hortoneda, Bishop of Urgell (1828-1851)
- Louis-Philippe I, King of France (1830-1848)
- Austria -
- Monarch - Ferdinand I, Emperor of Austria (1835-1848)
- Foreign Minister - Klemens Wenzel von Metternich, Foreign Minister of Austria (1809-1848)
- Belgium - Leopold I, King of the Belgians (1831-1865)
- Denmark
- Monarch - Christian VIII, King of Denmark (1839-1848)
- Prime Minister - Otto Joachim, Minister of State of Denmark (1824-1842)
- France -
- Netherlands -
- Portugal - Maria II, Queen of Portugal (1826-1828, 1834-1853)
- Prussia -
- Monarch -
- Chief Minister - Karl Friedrich Heinrich von Wylich, Cabinet Minister (1823-1841
- Russia - Nicholas I, Tsar of Russia (1825-1855)
- Spain - Isabella II, Queen of Spain (1833-1868)
- Sweden - Kingdom of Sweden-Norway
- Monarch Charles XIV, King of Sweden (1818-1844)
- Chief Minister -
- Mathias Rosenblad, Prime Minister for Justice of Sweden (1829-1840)
- Hans Gabriel Trolle-Wachtmeister, Prime Minister for Justice of Sweden, did not take office (1840)
- Arvid Posse, Prime Minister for Justice of Sweden (1840)
- Carl Törnebladh, Prime Minister for Justice of Sweden (1840-1843)
- Foreign Minister - Gustaf Nils Algernon Stierneld, Prime Minister for Foreign Affairs of Sweden-Norway (1838-1842)
- United Kingdom -
- Monarch - Victoria, Queen of Great Britain and Ireland (1837-1901)
- Prime Minister - William Lamb, 2nd Viscount Melbourne, Prime Minister of the United Kingdom (1835-1841)
Middle East and North Africa
- Abu Dhabi -
- Ajman - Humayd ibn Rashid, Shaikh of Ajman (1838-1841)
- Bahrain - Muhammad ibn Khalifah Al Khalifah, Shaikh of Bahrain (1834-1842)
- Egypt - Muhammad Ali Pasha, Governor of Egypt (1805-1848)
- Kuwait - Sheikh Jabir ibn Abdullah Al Sabah, Ruler of Kuwait (1814-1859)
- Morocco - Abderrahmane, Sultan of Morocco (1822-1859)
- Oman - Sa'id II ibn Sultan, Sultan of Oman (1804-1856)
- Ottoman Empire
- Monarch - Abd-ul-Mejid, Sultan of the Ottoman Empire (1839-1861)
- Grand Vizier - Mehmed Hüsrev Pasha, Ottoman Grand Vizier (1839-1841)
North America
- Mexico - Anastasio Bustamante, President of Mexico (1839-1841)
- Republic of Texas - Mirabeau B. Lamar, President (1838-1841)
- United States - Martin Van Buren, President of the United States (1837-1841)
South America
- Brazil - Pedro II, Emperor of Brazil (1831-1889)
- Chile -
- Paraguay -
- Perpetual Supreme Dictator José Gaspar Rodríguez de Francia (1814-1840)
- ...