List of state leaders in 1821

This is a list of heads of state, government leaders, and other rulers in the year 1821.

Africa

• Ashanti Confederacy – Osei Bonsu, Asantehene (1804–1824)
• Kingdom of Buganda – Kamaanya (1814–1836)
• Bunyoro – Nyamutukura Kyebambe III, Omukama of Bunyoro (1786–1835)
• Kingdom of Burundi – Ntare IV Rugamba (1796–1852)
• Kingdom of Dahomey – Gézo (1818–1856)
• Ethiopian Empire –
  1. Iyoas II (1818–1821)
  2. Gigar (1821–1826, 1826–1830)
  • Shewa – Sahle Selassie, Negus (1813–1847)
• Sultanate of Ndzuwani – Abdallah bin Alawi (1816–1832)
• Kingdom of Rwanda – Yuhi III (1797–1830)
• Sokoto Caliphate
  • Caliph – Muhammed Bello (1814–1837)
  • Grand Vizier – Gidago dan Laima (1817–1842)
• Swaziland – Paramount chief Ngwane IV (1815–1836)
• Zulu – Shaka, King of the Zulu (1816–1828)

Americas

• Chile – Bernardo O'Higgins, Supreme Director (1817–1823)
• Kingdom of Brazil (part of the United Kingdom of Portugal, Brazil and the Algarves) - abolished in that year -
  • John VI (1815–1821)
  • D. Pedro de Alcântara, Prince Regent (1821)
• Mexican Empire – Agustín de Iturbide (1821–1823)
• Paraguay – José Gaspar Rodríguez de Francia, Consul of Paraguay (1814–1840)
• Peru – José de San Martín, Protector of Peru (1821–1822)
• United States - James Monroe, President of the United States (1817–1825)

Asia

• Afghanistan –
  • Kabul/Peshawar - Ayub Shah Durrani, King of Afghanistan (1819–1823)
  • Kandahar - Shirdil Khan, Mohammedzay Regent (1818–1826)
  • Herat - Mahmud Shah, Padshah of Herat (1819–1826)
• China (Qing dynasty) -
  1. Jiaqing Emperor (1796–1820)
  2. Daoguang Emperor (1821–1850)
• Japan
  • Monarch – Emperor Ninkō (1817–1846)
  • Tokugawa shogunate - Tokugawa Ienari (1786–1837)
  • Ryukyu Kingdom - Shō Kō (1804–1828)
• Korea (Joseon dynasty) – Sunjo (1800–1834)

Europe

• Principality of Abkhazia –
  1. Safar Begi (1810–1821)
  2. Dimitri (1821–1822)
• Andorra –
  • Bernat Francés y Caballero, Bishop of Urgell (1817–1824)
  • Louis XVIII, King of France (1815–1824)
• Kingdom of Denmark
  • Monarch – Frederick VI (1808–1839)
  • Prime Minister – Ernst Heinrich von Schimmelmann (1818–1824)
• Kingdom of France –
  • Monarch – Louis XVIII (1815–1824)
  • Prime Minister -
    1. Armand-Emmanuel de Vignerot du Plessis, Duc de Richelieu (1820–1821)
    2. Jean-Baptiste de Villèle (1821–1828)
• German Confederation
  • Austrian Empire – Francis I (1792*-1835) *Note: Leader of Austria held the title of Archduke prior to 1804
    • Chancellor - Klemens von Metternich, Chancellor of Austria (1821–1848)
  • Kingdom of Bohemia – Francis (1792–1835)
  • Kingdom of Prussia –
    • Monarch – Friedrich Wilhelm III (1797–1840)
    • Chief Minister – Prince Karl August von Hardenberg (1810–1822)
  • Kingdom of Bavaria – Maximilian I (1799*-1825) *Note: Leader of Bavaria held title of Elector prior to 1805
  • Kingdom of Saxony – Frederick Augustus I (1763*-1827) *Note: Leader of Saxony held the title of Elector prior to 1806
  • Kingdom of Hanover – George IV (1820–1830)
  • Kingdom of Württemberg – William (1816–1864)
  • Grand Duchy of Luxembourg – William I (1815–1840)
  • Liechtenstein – Johann I Joseph, Prince of Liechtenstein (1805–1836)
• Kingdom of Hungary – Francis (1792–1835)
• Moldavia –
  1. Mihai Grigore Suţu, Prince of Moldavia (1819–1821)
  2. Veniamin Costache, provisoral ruler (1821)
  3. Alexander Ypsilantis and the Filiki Eteria occupation (1821)
  4. Stefan Bogoridi, Caimacam (1821–1822)
• Neutral Moresnet
  • Monarchs -
    • William I of the Netherlands (1815–1840)
    • Frederick William III of Prussia (1797–1840)
  • Mayor - Arnold Timothée de Lasaulx, Mayor of Moresnet (1817–1859)
• United Kingdom of the Netherlands – William I (1815–1840)
• Ottoman Empire
  • Sultan - Mahmud II, (1808–1839)
  • Grand Vizier -
    1. Seyyid Ali Pasha (1820–1821)
    2. Benderli Ali Pasha (1821)
    3. Haci Salih Pasha (1821–1822)
• United Kingdom of Portugal, Brazil and the Algarves – John VI (1816–1826)
• Kingdom of Prussia –
  • Monarch – Friedrich Wilhelm III (1797–1840)
  • Chief Minister (Chancellor) - Karl August von Hardenberg (1810–1822)
• Russian Empire – Alexander I (1801–1825)
• Kingdom of Spain – Ferdinand VII (1808, 1814–1833)
• Kingdom of Sweden – United Kingdoms of Sweden and Norway - Charles XIV John (1818–1844)
• Grand Duchy of Tuscany – Ferdinand III (1814–1824)
• Kingdom of the Two Sicilies – Ferdinand I (1816–1825)
• United Kingdom of Great Britain and Ireland
  • Monarch – George IV (1820–1830)
  • Prime Minister – Robert Jenkinson, 2nd Earl of Liverpool (1812–1827)
• Wallachia –
  1. Alexandru Suţu, Prince of Wallachia (1818–1821)
  2. Tudor Vladimirescu, military ruler (1821)
  3. Scarlat Callimachi, Prince of Wallachia (1821)

Middle East and North Africa

• Abu Dhabi –
  • Co-Shaikh – Shakhbut bin Dhiyab Al Nahyan (1818–1833)
  • Co-Shaikh – Tahnun bin Shakhbut Al Nahyan (1818–1833)
• Ajman – Rashid bin Humayd, Shaikh of Ajman (1816–1838)
• Bahrain – Sheikh Sulman ibn Ahmad Al Khalifah (1796–1825)
• Egypt Eyalet – Muhammad Ali Pasha, Governor of Egypt (1805–1848)
  • Kel Ahaggar – Ag Mama ag Sidi (1790–1830)
• Kuwait – Sheikh Jabir ibn Abdullah Al Sabah (1814–1859)
• Sultanate of Morocco – Slimane (1792–1822)
• Sultanate of Oman – Said bin Sultan, Sultan of Muscat and Oman (1804–1856)
• Persia (Qajar dynasty) – Fat′h-Ali Shah Qajar (1797–1834)
• Beylik of Tunis (under Ottoman Empire suzerainty) - Mahmud (1814–1824)