World leaders in 1831

Everyone who held a state’s top posts at some point in 1831, 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 1831 →

Major powers in 1831

United StatesUnited States history

United KingdomUnited Kingdom history

Prime minister
Charles Grey

Russian EmpireRussia history

Emperor
Nicholas I

Qing dynastyChina history

Emperor
Daoguang

July Monarchy of FranceFrance history

Tokugawa shogunate of JapanJapan history

Emperor
Ninkō

Africa

BasutolandLesotho history

King or Paramount Chief
Moshoeshoe I

Beylik of TunisTunisia history

Ethiopian Empire

Emperor
Iyasu IV

Khedivate of EgyptEgypt history

Kingdom of Eswatini (Swaziland)

Kingdom of Rwanda

Merina Kingdom

Prime minister
Andriamihaja

Morocco: Alaouite dynasty

Americas

Conservative Republic of ChileChile history

El SalvadorEl Salvador history

Empire of BrazilBrazil history

Emperor
Pedro I, then Pedro II

Federal Republic of Central AmericaGuatemala history

First Mexican RepublicMexico history

Free State of Costa RicaCosta Rica history

Miskito CoastNicaragua history

Oriental Republic of UruguayUruguay history

Republic of BoliviaBolivia history

Provisional President
Andrés de Santa Cruz

Republic of EcuadorEcuador history

Republic of Haiti (1820–1849)Haiti history

Republic of PeruPeru history

State of VenezuelaVenezuela history

United Provinces of the Río de la PlataArgentina history

governor managing international relations
Juan Manuel de Rosas

United StatesUnited States history

Asia

Aceh SultanateIndonesia history

Bruneian EmpireBrunei history

Emirate of Afghanistan: Barakzai dynastyAfghanistan history

Emirate of BukharaUzbekistan history

Emirate of NejdSaudi Arabia history

Johor SultanateIndonesia history

Joseon

King
Sunjo

Kingdom of ChampasakLaos history

King
Huy

Konbaung dynasty

Ottoman EmpireTurkey history

Sultan
Mahmud II

Qing dynastyChina history

Emperor
Daoguang

Rattanakosin Kingdom of SiamThailand history

Selangor SultanateMalaysia history

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

Terengganu SultanateMalaysia history

Tokugawa shogunate of JapanJapan history

Emperor
Ninkō

Yemeni Zaidi StateYemen history

Yogyakarta SultanateIndonesia history

Europe

Andorra

French Co-Prince
Louis Philippe I

Anhalt-Bernburg

Anhalt-Köthen

BelgiumBelgium history

DenmarkDenmark history

Electorate of Brandenburg, Kingdom of Prussia

Grand Duchy of FinlandFinland history

Grand Prince
Nicholas I

July Monarchy of FranceFrance history

Kingdom of Bavaria

Kingdom of Bohemia

Kingdom of Croatia (Habsburg)Croatia history

Kingdom of Galicia and LodomeriaUkraine history

Kingdom of Hanover

Kingdom of Lombardy–VenetiaItaly history

Kingdom of PortugalPortugal history

Kingdom of Sardinia, Duchy of SavoyItaly history

King of Sardinia, Duke of Savoy
Charles Felix, then Charles Albert

Kingdom of Saxony

Kingdom of Spain (1810–1873)Spain history

Kingdom of the NetherlandsNetherlands history

Kingdom of the Two SiciliesItaly history

Liechtenstein

LuxembourgLuxembourg history

Grand Duke
William I

Papal States

Principality of Waldeck and Pyrmont

Prince
George II

Russian EmpireRussia history

Emperor
Nicholas I

Saxe-Meiningen

Sweden–Norway

First Minister
Jonas Collett

United Kingdom of Great Britain and IrelandUnited Kingdom history

Prime minister
Charles Grey

Oceania

Kingdom of Huahine

Kings of Uvea (Wallis)