1837 state leaders - Events of 1838 - 1839 state leaders - State leaders by year

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 - Dingane, King of the Zulu (1828-1840)

Asia

• Afghanistan - Dost Mahommed Khan, Emir of Afghanistan (1826-1839)
• 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)
  • Ryūkyū Kingdom - Shō Iku, King of Ryūkyū (1829-1847)
• Korea (Joseon Dynasty) - Heonjong, King of Joseon (1834-1849)

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 - Ferdinand I, Emperor of Austria (1835-1848)
  • Chancellor - Prince Klemens Wenzel von Metternich, Chancellor of Austria (1821-1848)
• Bavaria - Ludwig I, King of Bavaria (1825-1848)
• Belgium
  • Monarch - Léopold I, King of the Belgians (1831-1865)
  • Cabinet Chief - Barthélémy de Theux de Meylandt, Cabinet Chief of Belgium (1834-1840, 1846-1847)
• Denmark
  • Monarch - Frederick VI, King of Denmark (1808-1839)
  • Prime Minister - Otto Joachim, Minister of State of Denmark (1824-1842)
• France -
  • Monarch - Louis Philippe, King of the French (1830-1848)
  • Prime Minister - Comte Molé, Prime Minister of France (1836-1839)
  • Hanover - Ernest Augustus, King of Hanover (1837-1851)
• United Kingdom of the Netherlands - William I, King of the Netherlands (1815-1840)
• Portugal - Maria II, Queen of Portugal (1826-1828, 1834-1853)
• Prussia -
  • Monarch - Friedrich Wilhelm III, King of Prussia (1797-1840)
  • Chief Minister - Count Karl Friedrich Heinrich von Wylich, Chief Minister of Prussia (1823-1841)
• Russia - Nicholas I, Tsar of Russia (1825-1855)
• Spain - Isabella II, Queen of Spain (1833-1868)
  • Saxony - Frederick Augustus, King of Saxony (1836-1854)
• Sweden - United Kingdoms of Sweden and Norway - Charles XIV, King of Sweden (1818-1844)
• Two Sicilies - Ferdinand II, King of the Two Sicilies (1830-1859)
• 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)
  • Württemberg - William, King of Württemberg (1816-1864)

Middle East and North Africa

• Abu Dhabi -
  • Co-Shaikh - Khalifa bin Shakhbut, Shaikh of Abu Dhabi (1833-1845)
  • Co-Shaikh - Sultan bin Shakhbut, Shaikh of Abu Dhabi (1833-1845)
• Ajman -
  1. Rashid bin Humayd, Shaikh of Ajman (1816-1838)
  2. 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)
• Mount Lebanon - Bashir ibn al-Qasim ibn `Umar, Emir of Mount Lebanon (1822-1840)
• Oman - Sa'id II ibn Sultan, Sultan of Oman (1804-1856)
• Ottoman Empire
  • Monarch - Mahmud II, Sultan of the Ottoman Empire (1808-1839)
  • Grand Vizier - Mehmed Emin Rauf Pasha, Ottoman Grand Vizier (1833-1839)

North America

• Central America - Francisco Morazán, President of Central America (1830-1839)
• Costa Rica -
  1. Manuel Aguilar Chacón, Head of State of Costa Rica (1837-1838)
  2. Braulio Carrillo Colina, Head of State of Costa Rica (1838-1842)
• Mexico - Anastasio Bustamante, President (1837-1839)
• Texas -
  1. Sam Houston President of the Republic of Texas (1836-1838)
  2. Mirabeau B. Lamar President of the Republic of Texas (1838-1841)
• United States of America - Martin Van Buren, President (1837-1841)

South America

• Brazil - Pedro II, Emperor of Brazil (1831-1889)
• Bolivia - Andrés de Santa Cruz (1829-1839)
• Chile - José Joaquín Prieto Vial, President of Chile (1831-1840, 1840-1841)
• Ecuador - Vicente Rocafuerte (1834-1839)
• Paraguay - José Gaspar Rodríguez de Francia (1814-1840)
• Uruguay -
  1. Manuel Oribe, President of Uruguay (1835-1838)
  2. Gabriel Antonio Pereira, President of Uruguay (1838)
  3. Fructuoso Rivera, President of Uruguay (1838-1839)

Oceania

• Hawaii - Kamehameha III, King of Hawaii (1823-1854)
• Commonwealth of Pitcairn - Joshua Hill, President of Pitcairn (1832-1838)
• Samoa - Malietoa Vai'inupo, Malietoa (?-1841)
• Tonga - Aleamotu'a, Tu'i Kanokupolu (1827-1845)