List of state leaders in 1820 - Definition

1819 state leaders - Events of 1820 - 1821 state leaders - State leaders by year

Africa

• Ashanti Confederacy - Osei Bonsu, Asantehene (1804-1824)
• Buganda - Kamaya, King of Buganda (1814-1836)
• Bunyoro - Kyebambe III, Omukama of Bunyoro (1786-1835)
• Burundi - Ntare IV Rugamba, King of Burundi (1796-1852)
• Dahomey - Gézo, King of Dahomey (1818-1856)
• Sokoto Caliphate
  • Caliph - Mohammed Bello, Sokoto Caliph (1814-1837)
  • Grand Vizier - Gidago dan Laima, Sokoto Grand Vizier (1817-1842)
• Ndzuwani - Abdallah bin Alawi, Sultan of Ndzuwani (1816-1832)
• Rwanda - Yuhi III, Mwami of Rwanda (1797-1830)
• Swaziland - Paramount chief Nggwane IV (1815-1836)
• Zulu - Shaka, King of the Zulu (1816-1828)

Americas

• United States - James Monroe, President of the United States (1817-1825)

Asia

• Afghanistan -
  • Kabul/Peshawar - Ayub Shah, King of Afghanistan (1819-1823)
  • Kandahar - Shirdil Khan, Mohammedzay Regent (1818-1826)
  • Herat - Mahmud Shah, Padshah of Herat (1819-1826)
• China (Qing Dynasty) - Jiaqing, Emperor of China (1796-1820)
• Japan
  • Monarch - Ninko, Emperor of Japan (1817-1846)
  • Shogun (Tokugawa) - Tokugawa Ienari, Shogun of Japan (1786-1837)
• Korea (Joseon Dynasty) - Sunjo, King of Joseon (1800-1834)

Australia and Oceania

• Colony of New South Wales
  • Monarch -
    1. George III, King of the United Kingdom (1760-1820)
    2. George IV, King of the United Kingdom (1820-1830)
  • Governor - Major-General Lachlan Macquarie, Governor of New South Wales (1810-1821)
  • Van Diemen's Land
  • Lieutenant Governor - Colonel William Sorrel, Lieutenant Governor of Van Diemen's Land (1817-1824)

Europe

• Abkhazia - Safar Begi, Prince of Abkhazia (1810-1821)
• Andorra -
  • Bernat Francés y Caballero, Bishop of Urgell (1817-1824)
  • Louis XVIII, King of France (1815-1824)
• Denmark
  • Monarch - Frederick VI, King of Denmark (1808-1839)
  • Prime Minister - Heinrich Ernst, Minister of State of Denmark (1818-1824)
• France -
  • Monarch - Louis XVIII, King of France (1815-1824)
  • Prime Minister -
    1. Comte Decazes, Prime Minister of France (1819-1820)
    2. Duc de Richelieu, Prime Minister of France (1820-1821)
• Netherlands - William I, King of the Netherlands (1815-1840)
• Portugal - John VI, King of Portugal (1816-1826)
• Prussia -
  • Monarch - Friedrich Wilhelm III, King of Prussia (1797-1840)
  • Chief Minister - Karl August von Hardenberg, Chancellor of Prussia (1810-1822)
• Russia - Alexander I, Tsar of Russia (1801-1825)
• Spain - Ferdinand VII, King of Spain (1808, 1814-1833)
• Sweden - Kingdom of Sweden-Norway
  • Monarch Charles XIV, King of Sweden (1818-1844)
  • Chief Minister - Fredrik Gyllenborg, Prime Minister for Justice of Sweden (1810-1829)
  • Foreign Minister - Lars von Engeström, Prime Minister for Foreign Affairs of Sweden-Norway (1809-1824)
• United Kingdom
  • Monarch -
    1. George III, King of the United Kingdom (1760-1820)
    2. George IV, King of the United Kingdom (1820-1830)
  • Regent -
    1. The Prince of Wales, Regent of the United Kingdom (1811-1820)
    2. became King
  • Prime Minister - Robert Banks Jenkinson, 2nd Earl of Liverpool, Prime Minister of the United Kingdom (1812-1827)

Middle East and North Africa

• Abu Dhabi -
  • Co-Shaikh - Shakhbut bin Dhiyab, Shaikh of Abu Dhabi (1818-1833)
  • Co-Shaikh - Tahnun bin Shakhbut, Shaikh of Abu Dhabi (1818-1833)
• Ajman - Rashid bin Humayd, Shaikh of Ajman (1816-1838)
• Bahrain - Shiekh Sulman ibn Ahmad Al Khalifah, Ruler of Bahrain (1796-1825)
• Egypt - Muhammad Ali Pasha, Governor of Egypt (1805-1848)
  • Kel Ahaggar - Ag Mama ag Sidi, Ruler of Kel Ahaggar (1790-1830)
• Kuwait - Sheikh Jabir ibn Abdullah Al Sabah, Ruler of Kuwait (1814-1859)
• Lebanon - Bashir ibn al-Qasim ibn Umar, Emir of Lebanon (1801-1821)
• Morocco - Slimane, Sultan of Morocco (1792-1822)
• 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 -
    1. Dervis Mehmed Pasha, Ottoman Grand Vizier (1818-1820)
    2. Seyyid Ali Pasha, Ottoman Grand Vizier (1820-1821)
• Tunis (under Ottoman suzerainty) - Mahmud, Bey of Tunis (1814-1824)