World leaders in 1821
Everyone who held a state’s top posts at some point in 1821, in the order they held them. Names are from Wikipedia’s list of state leaders and appear only where the person’s Wikidata record agrees on the post and the years. What happened in 1821 →
Major powers in 1821
United StatesUnited States history
- President
- James Monroe
United KingdomUnited Kingdom history
- King
- George IV
- Prime minister
- Robert Jenkinson
Russian EmpireRussia history
- Emperor
- Alexander I
Qing dynastyChina history
- Emperor
- Daoguang
Bourbon Restoration of FranceFrance history
- King
- Louis XVIII
- Prime minister
- Armand Emmanuel de Vignerot du Plessis, then Jean-Baptiste de Villèle
Tokugawa shogunate of JapanJapan history
- Emperor
- Ninkō
Africa
Beylik of TunisTunisia history
Ethiopian Empire
Hamaj Regency of the Funj SultanateSudan history
- Sultan
- Badi VII
Khedivate of EgyptEgypt history
- Khedive
- Muhammad Ali
Kingdom of AshantiGhana history
- Asantehene
- Osei Bonsu
Kingdom of Eswatini (Swaziland)
- King
- Sobhuza I
Merina Kingdom
- King
- Radama I
Morocco: Alaouite dynasty
- Sultan
- Slimane
Americas
El SalvadorEl Salvador history
- Political Chief
- Pedro Barriere
Estado de ChileChile history
- Supreme Director
- Bernardo O'Higgins
Federal Republic of Central AmericaGuatemala history
- Chief Political Officer
- Gabino Gaínza
Gran ColombiaColombia history
- President
- Simón Bolívar
Kingdom of BrazilBrazil history
- King
- John VI
Miskito CoastNicaragua history
Protectorate of PeruPeru history
- Protector of Peru
- José de San Martín
Republic of Haiti (1820–1849)Haiti history
- President
- Jean-Pierre Boyer
United StatesUnited States history
- President
- James Monroe
Asia
Aceh SultanateIndonesia history
Johor SultanateIndonesia history
- Sultan
- Hussein Shah
Joseon
- King
- Sunjo
Kedah SultanateMalaysia history
Kingdom of VientianeLaos history
- King
- Anouvong
Konbaung dynasty
- King
- Bagyidaw
Ottoman EmpireTurkey history
- Sultan
- Mahmud II
- Grand Vizier
- Benderli Ali Pasha
Qing dynastyChina history
- Emperor
- Daoguang
Rattanakosin Kingdom of SiamThailand history
- King
- Rama II
Selangor SultanateMalaysia history
- Sultan
- Ibrahim Shah
Sheikhdom of Abu DhabiUnited Arab Emirates history
Sheikhdom of AjmanUnited Arab Emirates history
Sheikhdom of KuwaitKuwait history
- Sheikh
- Jaber I
Sheikhdom of SharjahUnited Arab Emirates history
Sheikhdom of Umm Al QuwainUnited Arab Emirates history
Tokugawa shogunate of JapanJapan history
- Emperor
- Ninkō
Yemeni Zaidi StateYemen history
Yogyakarta SultanateIndonesia history
- Sultan
- Hamengkubuwono IV
Europe
Andorra
- Episcopal Co-Prince
- Bernat Francés Caballero i Mathet
- French Co-Prince
- Louis XVIII
Anhalt-Bernburg
Anhalt-Köthen
Bourbon Restoration of FranceFrance history
- King
- Louis XVIII
- Prime minister
- Armand Emmanuel de Vignerot du Plessis, then Jean-Baptiste de Villèle
DenmarkDenmark history
- King
- Frederick VI
Electorate of Brandenburg, Kingdom of Prussia
Kingdom of Bavaria
- King
- Maximillian IV
Kingdom of Bohemia
- King
- Francis II
Kingdom of Croatia (Habsburg)Croatia history
- King
- Francis
- Ban
- Ignác Gyulay
Kingdom of Galicia and LodomeriaUkraine history
- King
- Francis II
Kingdom of Hanover
- King
- George IV
Kingdom of Lombardy–VenetiaItaly history
- King
- Francis I
Kingdom of PortugalPortugal history
- King
- John VI
Kingdom of Sardinia, Duchy of SavoyItaly history
- King of Sardinia; Duke of Savoy
- Victor Emmanuel I
- King of Sardinia, Duke of Savoy
- Charles Felix
Kingdom of Saxony
Kingdom of Spain (1810–1873)Spain history
- King
- Ferdinand VII
Kingdom of the NetherlandsNetherlands history
- King
- William I
Liechtenstein
- Prince
- Johann I Josef
LuxembourgLuxembourg history
- Grand Duke
- William I
MoldaviaRomania history
- Prince
- Mihail Suțu
- military commander of Filiki Eteria occupation
- Alexander Ypsilantis
- Kaymakam
- Stefan Bogoridi
Papal States
- Pope
- Pius VII
Principality of Waldeck and Pyrmont
- Prince
- George II
Principality of WallachiaRomania history
- Prince
- Alexandru Suțu, then Tudor Vladimirescu, then Scarlat Callimachi
Russian EmpireRussia history
- Emperor
- Alexander I
Saxe-Gotha-Altenburg
- Duke
- Augustus
Saxe-Meiningen
- Duke
- Bernhard II
Sweden–Norway
United Kingdom of Great Britain and IrelandUnited Kingdom history
- King
- George IV
- Prime minister
- Robert Jenkinson
Oceania
Hawaiian KingdomUnited States history
- King
- Kamehameha II
Kingdom of Huahine
- Queen
- Teriitaria II