List of heads of state 1804

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Africa

• Ethiopia
  • Emperor : Egwala Seyon (1801–1818)

• Burundi
  • King: Ntare IV. Rugamba (approx. 1796 – approx. 1850)

• Dahomey
  • King: Adandozan (1797–1818)

• Morocco ( Alawid Dynasty)
  • Sultan: Mulai Sulaiman (1792–1822)

• Rwanda
  • King: Mutara II. 1802-1853

• Tunisia ( Husainid dynasty)
  • Sultan: Hammuda Bey (1782-1814)

America

Angloamerica

• United States of America
  • Head of State or Government: President Thomas Jefferson (1801–1809)

Caribbean

• Haiti (since January 1, controversial)
  • Ruler: Emperor Jacob I (September 22, 1804–1806)

Latin America

• Viceroyalty of Brazil
  • Viceroy : Fernando José de Portugal e Castro (1801–1806)

• Viceroyalty of New Granada
  • Viceroy : Antonio Amar y Borbón (1803-1810)

• Viceroyalty of New Spain
  • Viceroy : José de Iturrigaray (1803-1808)

• Viceroyalty of Peru
  • Viceroy : Gabriel de Avilés (1801–1806)

• Viceroyalty of the Río de la Plata
  • Viceroy :
    1. Joaquín del Pino Sánchez de Rojas (1801–1804)
    2. Rafael de Sobremonte (1804-1807)

Asia

• Abu Dhabi
  • Sheikh: Shakhbut bin Dhiyab (1793-1816)

• Afghanistan
  • King : Schodscha Shah Durrani (1803-1809)

• China ( Qing Dynasty )
  • Emperor: Jia Qing (1796-1820)

• Japan
  • Emperor : Kokaku (1780–1817)
  • Shogun ( Tokugawa ): Tokugawa Ienari (1786–1837)

• Korea ( Joseon )
  • King : Sunjo (1800–1834)

• Persia ( Qajar dynasty)
  • Shah : Fath Ali (1797–1834)

• Thailand
  • King of Thailand : Rama I (1782–1809)

Europe

• Andorra
  • Co-princes :
    • Emperor of France : Napoléon Bonaparte (1804–1814)
    • Bishop of Urgell : Francesc Antoni de la Dueña y Cisneros (1797–1816)

• Denmark and Norway
  • King : Christian VII. (1766–1808)

• France
  • Emperor : Napoléon Bonaparte (1804–1814) (1799–1804 1st consul)

• Holy Roman Empire
  • King and Emperor : Franz II. (1792–1806)
  • Bohemia and Austria : King and Archduke Franz Joseph Karl (1792–1835, from August 4 as Emperor Franz I )
  • Brandenburg : Elector Friedrich Wilhelm III. (1797-1840)
  • Baden : Elector Karl Friedrich (1738–1811), since 1806 Grand Duke
  • Bavaria : Elector Maximilian IV. Joseph (1799–1825), king since 1806
  • Braunschweig-Lüneburg (Hanover) : Elector Georg Wilhelm Friedrich (1760–1820)
  • Hessen-Darmstadt : Landgrave Ludwig X. (1790–1806), since 1806 Grand Duke
  • Hessen-Kassel : Elector Wilhelm I (Hessen-Kassel) (1785–1821), elector since 1803, 1806–1813 in exile
  • Oldenburg : Duke Peter Friedrich Ludwig (1785–1829)
  • Regensburg : Elector Karl Theodor von Dalberg (1803-1810)
  • Saxony : Elector Friedrich August III. (1763–1827), king since 1806
  • Salzburg : Elector Ferdinand III. (1803-1805)
  • Württemberg : Elector Friedrich I (1797–1816), king since 1806
• Italian states
  • Papal States
    • Pope : Pius VII (1800–1823)
  • Naples
    • King : Ferdinand IV. (1759-1806)
  • San Marino
    • Capitani Reggenti : Antonio Onofri and Marino Francesconi (1803-1804)
    • Capitani Reggenti: Marino Belluzzi and Matteo Martelli (1804)
    • Capitani Reggenti: Francesco Giannini and Giuseppe Righi (1804–1805)
  • Sardinia
    • King : Victor Emanuel I (1802–1821)
  • Savoy
    • Duke : Charles Emanuel IV. (1796–1819)
  • Sicily
    • King : Fernando I (1759-1825)

• Montenegro (under Ottoman suzerainty)
  • Prince-Bishop (Vladika) : Petar I. Petrović-Njegoš (1782–1830)

• Ottoman Empire
  • Sultan: Selim III. (1789–1807)

• Portugal
  • Queen : Maria I (1777–1816) (incapacitated in 1792) (1815–1816 Queen of Brazil)
  • Regent: Johann Duke of Braganza (1792–1816) (1816–1826 King of Portugal, 1815–1816 Regent of Brazil, 1816–1822 King of Brazil)

• Prussia
  • King : Friedrich Wilhelm III. (1797–1840) (1797–1806 Elector of Brandenburg)

• Russia
  • Emperor : Alexander I (1801-1825)

• Sweden
  • King : Gustav IV Adolf (1792–1809)

• Spain
  • King : Charles IV (1788–1808)

• Hungary
  • King : Franz I (1792–1835) (1792–1806 Emperor, 1792–1835 King of Bohemia, 1815–1835 King of Lombardy-Veneto, 1792–1797 and 1799–1800 Duke of Milan, 1792–1804 Archduke of Austria, 1804–1835 Emperor of Austria)

• Wallachia (under Ottoman rule)
  • Prince : Constantin Ipsilanti (1802–1806, 1806–1807, 1807 ) (1799–1801 Prince of Moldova)

• United Kingdom
  • Head of State: King George III. (1801–1820) (1760–1801 King of Great Britain and Ireland, 1760–1806 Elector of Braunschweig-Lüneburg, 1814–1820 King of Hanover)
  • Head of Government:
    • Prime Minister Henry Addington (1801-1804)
    • Prime Minister William Pitt the Younger ( 1783-1801 , 1804-1806)

Oceania and Pacific

• Hawaii
  • King: Kamehameha I (1795–1819)