World leaders in 1800

Everyone who held a state’s top posts at some point in 1800, 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 1800 →

Major powers in 1800

United StatesUnited States history

President
John Adams

United KingdomUnited Kingdom history

Russian EmpireRussia history

Emperor
Paul

Qing dynastyChina history

Emperor
Jiaqing

French First RepublicFrance history

First Consul
Napoleon Bonaparte

Tokugawa shogunate of JapanJapan history

Emperor
Kōkaku

Africa

Beylik of TunisTunisia history

Ethiopian Empire

Kingdom of AshantiGhana history

Kingdom of Eswatini (Swaziland)

Kingdom of KongoAngola history

Manikongo
Henrique II

Merina Kingdom

Morocco: Alaouite dynastyMorocco history

Sultan
Slimane

Pate Sultanate: Nabahani dynasty

Americas

Miskito CoastNicaragua history

United States: Constitution of the United States: President of the United StatesUnited States history

President
John Adams

Asia

Aceh SultanateIndonesia history

Đại Việt: Tây Sơn dynastyVietnam history

Emirate of Abu DhabiUnited Arab Emirates history

Emirate of DiriyahSaudi Arabia history

Emirate of SharjahUnited Arab Emirates history

Johor SultanateMalaysia history

Joseon

King
Jeongjo, then Sunjo

Kedah SultanateMalaysia history

Konbaung dynasty

Ottoman EmpireTurkey history

Sultan
Selim III

Persia: Qajar dynastyIran history

Qing dynastyChina history

Emperor
Jiaqing

Rattanakosin Kingdom of SiamThailand history

King
Rama I

Ryukyu Kingdom: Second Shō dynastyJapan history

Selangor SultanateMalaysia history

Sheikhdom of KuwaitKuwait history

Tokugawa shogunate of JapanJapan history

Emperor
Kōkaku

Umm Al QuwainUnited Arab Emirates history

Yemeni Zaidi StateYemen history

Yogyakarta SultanateIndonesia history

Europe

Andorra

Bourbon SpainSpain history

Denmark–Norway

Duchy/ Kingdom of Prussia, Electorate of BrandenburgPoland history

French First RepublicFrance history

First Consul
Napoleon Bonaparte

Holy Roman Empire, Kingdom of Germany

Emperor Elect, King
Francis II

Kingdom of Bohemia

Kingdom of Croatia (Habsburg)Croatia history

Kingdom of Galicia and LodomeriaUkraine history

Kingdom of Great Britain, Kingdom of IrelandUnited Kingdom history

Kingdom of Hungary (1526–1867)Hungary history

Kingdom of ImeretiGeorgia history

Kingdom of Kartli-KakhetiGeorgia history

Kingdom of PortugalPortugal history

Queen
Maria I

Kingdom of SardiniaItaly history

Moldavia

Papal StatesItaly history

Principality of Wallachia

Russian EmpireRussia history

Emperor
Paul

Sweden: Age of Liberty, Gustavian eraSweden history

Oceania

Kingdom of Tahiti