List of heads of state 1827

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Africa

Egypt
- Viceroy: Muhammad Ali Pasha (1805–1848)

Ethiopia
- Kaiser : Gigar (1821–1826, 1826–1830)

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

Dahomey
- King: Gézo (1818-1856)

Morocco
- Sultan of the Alawid dynasty: Mulai Abd ar-Rahman (1822-1859)

Rwanda
- King: Mutara II (1802-1853)

America

North America

Mexico
- Head of State or Government: President Guadalupe Victoria (1824–1829)

United States of America
- Head of State or Government: President John Quincy Adams (1825–1829)

Central America

Haiti
- Head of State and Government: President Jean-Pierre Boyer (1818–1843)

Central American Confederation
- Costa Rica : Head of State Juan Mora Fernández (1825–1833)
- El Salvador : Head of State Mariano Prado (1826–1829)
- Guatemala :
  1. Head of State José Domingo Estrada (January 2 - March 1, 1827)
  2. Head of State Mariano de Aycinena y Piñol (March 1, 1827–1829)
- Honduras :?
- Nicaragua :?

South America

Bolivia
- Head of State and Government: President Antonio José de Sucre (1825–1828)

Brazil
- Ruler: Emperor Peter I (1822–1831)

Chile
- Head of State and Government:
  1. (incumbent) Vice-President Agustín Eyzaguirre (1826– February 15, 1827)
  2. President Ramón Freire y Serrano (February 15-May 8, 1827)
  3. (incumbent) Vice President Francisco Antonio Pinto (May 8, 1827–1829)

Greater Colombia
- Head of State and Government:
  1. President Francisco de Paula Santander (1819– February 20, 1827, 1832–1837 )
  2. President Simón Bolívar (February 20, 1827-1830)

Paraguay
- Head of State and Government: Consul Gaspar Rodríguez de Francia (1814–1840)

Peru (controversial)
- Head of State and Government:
  1. Liberator of Peru Simón Bolívar (1824–28 January 1827)
  2. President of the Government Council Andrés de Santa Cruz (January 28 - June 9, 1827)
  3. (provisional) Manuel Salazar y Baquíjano (June 9 - August 22, 1827)
  4. President José de La Mar (August 22, 1827–1829)

Río de la Plata (now Argentina )
- Head of State and Government:
  1. President Bernardino Rivadavia (1826– August 9, 1827)
  2. (temporarily) Vicente López y Planes (August 9 - August 17, 1827)

Uruguay (controversial)
- Head of State or Government:?

Asia

Abu Dhabi
- Sheikh: Shakhbut bin Dhiyab (1818–1833)
- Sheikh: Tahnun bin Shakhbut (1818–1833)

Afghanistan
- Emir: Abdul Wakil Panah Khan (1822–1839)
- Emir: Dost Mohammed (1826–1839)

China
- Qing Dynasty Emperor : Dao Guang (1821–1850)

Japan
- Emperor : Ninkō (1817–1846)
- Shogun ( Tokugawa ): Tokugawa Ienari (1786–1837)

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

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

Thailand
- King : - Rama III. (1824-1851)

Australia and Oceania

Hawaii
- King: Kamehameha III. (Kauikeaouli) (1824-1854)

Europe

Andorra
- Co-princes :
  - King of France : Charles X (1824–1830)
  - Bishop of Urgell : Bonifaci López y Pulido (1824–1827)

Denmark
- King : Friedrich VI. (1808–1839) (1808–1814 King of Norway)

German Confederation
- Austria
  - Emperor : Franz I (1804-1835)
- Prussia
  - King : Friedrich Wilhelm III. (1797-1840)
    - State Chancellor: Carl Friedrich Heinrich Graf von Wylich and Lottum (1823–1841)
- Principality of Anhalt-Bernburg
  - Duke : Alexius Friedrich Christian (1796–1834) until 1807 Prince
- Principality of Anhalt-Dessau
  - Duke : Leopold IV (1817–1871)
- Principality of Anhalt-Köthen :
  - Duke : Ferdinand Friedrich (1818–1830)
- to bathe
  - Grand Duke : Ludwig I (1818–1830)
- Bavaria
  - King : Ludwig I (1825–1848)
    - Minister of State : Georg Friedrich Freiherr von Zentner (1825–1832)
- Braunschweig
  - Duke : Charles II (1815–1831)
- Bremen
  - Mayor : Johann Smidt (1821–1857)
  - Mayor: Heinrich Gröning (1821–1839)
  - Mayor: Simon Hermann Nonnen (1822–1847)
  - Mayor: Johann Michael Duntze (1824–1845)
- Frankfurt
  - Senior Mayor : Friedrich Wilhelm Philipp Freiherr von Malapert (1827) (1830)
- Hamburg
  - Mayor : Wilhelm Amsinck (1802–1811) (1813–1831)
  - Mayor: Johann Arnold Heise (1807–1811) (1813–1834)
  - Mayor: Johann Heinrich Bartels (1820–1850)
  - Mayor: Johann Daniel Koch (1821–1829)
- Hanover (personalunionwith Great Britain 1815–1837)
  - King : George IV (1820-1830)
- Hessen-Darmstadt
  - Grand Duke : Ludwig I (1790–1830) until 1806 landgrave
- Hessen-Homburg
  - Landgrave : Friedrich VI. (1820-1829)
- Hessen-Kassel
  - Elector: Wilhelm II. (1821–1847)
- Hohenzollern-Hechingen
  - Prince : Friedrich (1810–1838)
- Hohenzollern-Sigmaringen
  - Prince : Anton Aloys (1785–1831)
- Holstein and Lauenburg (personal union with Denmark 1815–1864)
  - Duke: Friedrich VI. (1815-1839)
- Liechtenstein
  - Prince : Johann I. Josef (1805–1836)
- lip
  - Prince : Leopold II (1802-1851)
- Lübeck
  - Mayor : Christian Heinrich Kindler (1825) ( 1825 , 1827, 1829, 1831, 1833, 1834, 1835, 1837, 1839, 1841, 1843 )
  - Mayor: Adolph Hinrich Voeg (1826) (1828) (1830) (1832)
  - Mayor: Christian Nicolaus von Evers
  - Mayor: Peter Hinrich Tesdorpf (1827)
- Luxembourg (personal union with the Netherlands 1815–1890)
  - Grand Duke : Wilhelm I (1815–1840)
- Mecklenburg-Schwerin
  - Grand Duke : Friedrich Franz I (1785–1837) until 1815 Duke
- Mecklenburg-Strelitz
  - Grand Duke : Georg (1816–1860)
- Nassau :
  - Duke : Wilhelm I (1816–1839)
- Oldenburg
  - Grand Duke : Peter I (1823–1829)
- Reuss older line :
  - Prince : Heinrich XIX. (1817-1836)
- Reuss-Lobenstein-Ebersdorf
  - Prince: Heinrich LXXII. (1822-1848)
- Reuss-Schleiz
  - Prince: Heinrich LXII. (1818-1848)
- Saxony
  - King : Friedrich August I (1763–1827) until 1806 elector
  - King: Anton (1827–1836)
- Saxony-Altenburg
  - Duke : Friedrich (1826–1834)
- Saxe-Coburg and Gotha
  - Duke : Ernst I (1826–1844)
- Saxony-Meiningen
  - Duke : Bernhard II. (1803–1866)
- Saxe-Weimar-Eisenach
  - Grand Duke : Carl August (1758–1828) until 1815 Duke
- Schaumburg-Lippe
  - Prince : Georg Wilhelm (1787–1860) until 1807 Count
- Schwarzburg-Rudolstadt
  - Prince : Friedrich Günther (1807–1867)
- Schwarzburg-Sondershausen
  - Prince : Günther Friedrich Karl I (1794–1835)
- Waldeck-Pyrmont
  - Prince : George II (1813–1845)
- Württemberg
  - King : Wilhelm I (1816–1864)

France
- King : Charles X (1824-1830)
  - Prime Minister: Jean-Baptiste de Villèle (1821–1828)

Italian states
- Papal States
  - Pope : Leo XII. (1823-1829)
- Lombardy-Veneto (personal union with Austria 1815–1859 / 66)
  - King : Franz (1815–1835)
- Lucca
  - Duke: Karl Ludwig (1824–1847)
- Massa and Carrara
  - Duchess : Maria Beatrice (1790–1829)
- Modena and Reggio
  - Duke : Francis IV (1814–1846)
- Parma, Piacenza and Guastalla
  - Duchess : Marie-Louise (1814–1847)
- San Marino
  - Capitani Reggenti : Giuliano Malpeli , Marino Lonfernini (October 1, 1826– April 1, 1827)
  - Capitani Reggenti: Mariano Begni , Giovanni Malpeli (April 1, 1827– October 1, 1827)
  - Capitani Reggenti: Lodovico Belluzzi , Vincenzo Braschi (October 1, 1827– April 1, 1828)
- Sardinia
  - King : Karl Felix (1821–1831)
- Kingdom of the Two Sicilies
  - King : Franz I (1825-1830)
- Tuscany
  - Grand Duke Leopold II (1824-1859)

Monaco
- Prince : Honoré V. (1819–1841)

Montenegro (until 1878 under Ottoman suzerainty)
- Prince-Bishop (Vladika) : Petar I. Petrović-Njegoš (1782–1830)

Netherlands (personal union with Luxembourg 1815–1890)
- King : Wilhelm I (1815–1840)

Norway
- King : Charles III. (1818-1844)

Ottoman Empire
- Sultan: Mahmud II. (1808–1839)

Portugal
- Queen : Mary II (1826–1828, 1834–1853 )
  - Regent: Isabella Maria of Portugal (1826–1828)

Russia
- Emperor : Nicholas I (1825–1855)

Sweden
- King : Karl XIV. Johann (1818–1844) (1818–1844 King of Norway)

Serbia (until 1878 under Ottoman suzerainty)
- Prince : Miloš Obrenović (1817–1839, 1858–1860 )

Spain
- King : Ferdinand VII ( 1808 , 1813–1833)

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)

United Kingdom
- Head of State: King George IV (1820–1830) (1811–1820 Regent, 1820–1830 King of Hanover)
- Head of Government:
  - Prime Minister Robert Jenkinson, 2nd Earl of Liverpool (1812– April 12, 1827)
  - Prime Minister: George Canning (April 12, 1827- August 8, 1827)
  - Prime Minister: Frederick Robinson (August 31, 1827–1828)

Wallachia (under Ottoman rule)
- Prince : Grigore IV. Ghica (1822–1828)