List of state leaders in 1840
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Africa
- Egypt: Viceroy Muhammad Ali Pasha (1805-1848)
- Ethiopia Kaiser: Sahle Dengel (1832-1841)
- Emperor: John III. (1840-1841)
- Buganda King: Suna II (1836-1856)
- Bunyoro King: Nyabongo II (1835-1848)
- Burundi King: Ntare Rugamba IV (1796-1852)
- Dahomey King: Gezo (1818-1856)
- Madagascar Queen: Ranavalona I (1782-1861)
- Prime Minister: Rainiharo († 1852)
- Morocco Sultan Moulay Abd al-Rahman (1822-1859)
- Rwanda King: Mutara II (1830-1853)
- Sokoto Caliphate Caliph Abu Bakr Atiku I. (1837-1842)
- Vizier: Gidago dan Laima (1817-1842)
- Zulu King Dingane ka Senzangakhona (1828-1840)
- King Mpande ka Senzangakhona (1840-1872)
America
North America
- Mexico Heads of State and Head of Government: President Anastasio Bustamante (1839-1841)
- United States of America Heads of state and head of government: President Martin Van Buren (1837-1841)
Central America
- Costa Rica Heads of State and Head of Government: Manuel Aguilar Chacón (1837-1841)
- Guatemala Heads of State and Head of Government: President Mariano Rivera Paz (1839-1841)
- Haiti Heads of State and Head of Government: President Jean -Pierre Boyer (1818-1843)
- Honduras Heads of State and Head of Government: President José Francisco Zelaya y Ayes ( 1839-31 December 1840. )
- Nicaragua Heads of State and Head of Government: Supreme Director Tomás Valladares (1839 - September 1840 )
- Supreme Director Patricio Rivas ( September 1840-1841 )
- Central American confederation El Salvador: President José María Silva ( February 16 to April 5 1840)
- Antonio José Cañas Head of State ( 15 April to 20 September 1840)
- President Norberto Ramirez (September 20, 1840-1841 )
- Los Altos (from Guatemala captured on 27 January ) Head of state?
South America
- Bolivia Heads of State and Head of Government: President José Miguel de Velasco (1839-1841)
- Brazil Ruler: Emperor Peter II (1831-1889)
- Chile Heads of State and Head of Government: President José Joaquín Prieto (1831-1841)
- Ecuador Heads of state and head of government: President Juan José Flores (1830-1834, 1839-1843, 1843-1845)
- New Granada (now Colombia) Heads of State and Head of Government: President José Ignacio de Márquez (1837-1841)
- Paraguay Heads of State and Head of Government: Consul Gaspar Rodríguez de Francia ( 1814-20. September 1840 )
- Consul Manuel Antonio Ortiz (20 September 1840-1841 )
- Peru (disputed ) Heads of State and Head of Government: President Agustín Gamarra (1838-1841)
- Río de la Plata (now Argentina) Heads of State and Head of Government: ( vacant)
- Governor of the Province of Buenos Aires: General Juan Manuel de Rosas (1835-1852)
- Uruguay Heads of State and Head of Government: President Fructuoso Rivera (1838-1843)
- Venezuela ( disputed) Heads of State and Head of Government: President José Antonio Páez (1830-1835, 1839-1843)
Asia
- Abu Dhabi Caliph Caliph 'm Shakhbut (1833-1845)
- Sultan: Sultan bin Shakhbut (1833-1845)
- Ajman Sheikh: Humaid I. (1838-1841)
- Afghanistan Emir: Shoja Shah Durrani (1839-1842)
- Bahrain Shaykh Muhammad ibn Khalifah Al Khalifah (1834-1842)
- Brunei Sultan Omar Ali Saifuddin II († 1852)
- China ( Qing Dynasty ) Kaiser: Daoguang (1821-1850)
- British India Governor General George Eden (1836-1842)
- Japan Kaiser: Ninko (1817-1846)
- Shogun: ( Tokugawa ): Tokugawa Ieyoshi ( 1837-1853 )
- Korea ( Joseon ) King: Heonjong (1834-1849)
- Kuwait Emir: Djabir I. (1814-1859)
- Oman Sultan Sa'id ibn Sultan II (1804-1856)
- Persia ( Qajar dynasty ) Shah Mohammed Shah (1834-1848)
- Thailand King Rama III, King of Thailand ( 1824-1851 ).
Australasia
- Hawaii King Kamehameha III. (1825-1854)
Europe
- Abkhazia Prince: Mikheil Sharvashidze (1822-1864)
- Andorra Co - Prince: King of the French Louis - Philippe I (1830-1848)
- Bishop of Urgell: Simó de Guardiola y Hortoneda (1828-1851)
- Belgium King Leopold I. (1831-1865) Prime Minister: Barthélémy de Theux de Meylandt (1834-1843) (1846-1847)
- Denmark King Christian VIII (1839-1848) Prime Minister: Otto Joachim (1824-1842)
- German Bund Austria Emperor Ferdinand I. (1835-1848) Klemens Wenzel Lothar State Chancellor Metternich (1821-1848)
- King Friedrich Wilhelm III. (1797-1840)
- King Friedrich Wilhelm IV (1840-1861) Chancellor: Carl Friedrich Heinrich Graf von Wylich and Lottum (1823-1841)
- Duke: Karl Alexander (1834-1863)
- Duke Leopold IV (1817-1871)
- Duke Heinrich (1830-1847)
- Grand Duke Leopold (1830-1852)
- King: Ludwig I (1825-1848) Minister of State: Friedrich August Freiherr von Gise (1832-1846)
- Duke Wilhelm (1831-1884)
- Mayor: Johann Smidt (1821-1857)
- Mayor: Simon Hermann nuns (1822-1847)
- Mayor: Johann Michael Duntze (1824-1845)
- Mayor: Johann Daniel Noltenius (1839-1852)
- Mature Mayor: Gottfried Scharff (1840 ) ( 1842) (1844 ) ( 1846)
- Mayor: Johann Heinrich Bartels (1820-1850)
- Mayor: Amandus Augustus Abendroth (1831-1842)
- Mayor: Christian Daniel Benecke (1835-1851)
- Mayor: David Schlüter (1835-1843)
- King: Ernst August (1837-1851)
- Grand Duke: Ludwig II (1830-1848)
- Landgrave Philipp (1839-1846)
- Elector William II (1821-1847)
- Prince Konstantin (1838-1849)
- Prince Karl (1831-1848)
- Duke: Christian I. (1839-1848)
- Prince Alois II (1836-1858)
- Prince Leopold II (1802-1851)
- Mayor: Christian Nicolaus of Evers ( 1836) (1838 ) ( 1840) (1842 ) ( 1844)
- Grand Duke: William I (1815-1840)
- Grand Duke William II (1840-1849)
- Grand Duke Paul Friedrich (1837-1842)
- Grand Duke: Georg (1816-1860)
- Duke: Adolf I (1839-1866)
- Grand Duke Paul Friedrich August (1829-1853)
- Prince Heinrich XX. (1836-1859)
- Prince Heinrich LXXII. (1822-1848)
- Prince Heinrich LXII. (1818-1848)
- King Friedrich August II (1836-1854)
- Duke: Joseph (1834-1848)
- Duke Ernst I. (1826-1844)
- Duke Bernhard II (1803-1866)
- Grand Duke Carl Friedrich (1828-1853)
- Prince Georg Wilhelm (1787-1860) to 1807 Count
- Prince Friedrich Günther (1807-1867)
- Prince Günther Friedrich Karl II (1835-1880)
- Prince: George II (1813-1845)
- King: William I (1816-1864)
- France King Louis - Philippe I (1830-1848) Prime Minister: Nicolas Jean -de- Dieu Soult (1839-1840)
- Prime Minister Adolphe Thiers ( 1840)
- Prime Minister: Nicolas Jean -de- Dieu Soult (1840-1847)
- Greece King Otto I. (1832-1862)
- Italian States Church State Pope Gregory XVI. (1831-1846)
- King Ferdinand (1835-1848)
- Duke Karl Ludwig (1824-1847)
- Duke: Franz IV (1814-1846)
- Duchess Marie- Louise (1814-1847)
- Captains Regent: Giuliano Malpeli, Biagio Martelli (1 October 1839-1 April 1840. )
- Captains Regent: Giovanni Benedetto Belluzzi, Pietro Righi (1 April 1840-1 October 1840. )
- Captains Regent: Raffaele Gozi, Pietro Zoli (1 October 1840-1 April 1841. )
- King, Charles Albert (1831-1849)
- King Ferdinand II (1830-1859)
- Grand Duke Leopold II (1824-1859)
- Monaco Prince: Honoré V. (1819-1841)
- Montenegro ( until 1878 under Ottoman suzerainty ) Prince-bishop ( Vladika ): Petar II Petrović - Njegoš ( 1830-1851 )
- Neutral Moresnet Ruler: Leopold I, King of the Belgians (1831-1865)
- Ruler: Friedrich Wilhelm IV, King of Prussia (1840-1861)
- Mayor Arnold Timothée de Lasaulx (1817-1859)
- Netherlands King: William I (1815-1840)
- King William II (1840-1849)
- Norway King Charles III. Johann (1818-1844) (same as Charles XIV John of Sweden, Swedish -Norwegian personal union )
- Ottoman Empire Sultan Abdülmecid I (1839-1861)
- Grand Vizier Mehmed Pasha Husrev (1839-1841)
- Portugal Queen Maria II (1826-1828) (1834-1853)
- King Ferdinand II (1837-1853)
- Russia Tsar Nicholas I. (1825-1855)
- Sweden King Karl XIV Johan (1818-1844) (. Identical to Charles III John of Norway, Norwegian - Swedish personal union )
- Serbia ( until 1878 under Ottoman suzerainty ) Prince Mihailo Obrenović (1839-1842) (1860-1868)
- Spain Queen Isabella II (1833-1868)
- Hungary King Ferdinand V (1835-1848)
- United Kingdom Queen Victoria (1837-1901)
- Prime Minister William Lamb, 2nd Viscount Melbourne ( 1835-1841 )