World leaders in 1851
Everyone who held a state’s top posts at some point in 1851, 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 1851 →
Major powers in 1851
United StatesUnited States history
- President
- Millard Fillmore
United KingdomUnited Kingdom history
- Queen
- Victoria
- Prime minister
- John Russell
Russian EmpireRussia history
- Emperor
- Nicholas I
Qing dynastyChina history
- Emperor
- Xianfeng
French Second RepublicFrance history
- President
- Louis-Napoléon Bonaparte
- Prime minister
- Léon Faucher
Tokugawa shogunate of JapanJapan history
- Emperor
- Kōmei
Africa
BasutolandLesotho history
- King or Paramount Chief
- Moshoeshoe I
Beylik of TunisTunisia history
Ethiopian Empire
- Emperor
- Yohannes III, then Sahle Dengel
Kingdom of Eswatini (Swaziland)
- King
- Mswati II
Kingdom of Rwanda
LiberiaLiberia history
- President
- Joseph Jenkins Roberts
Merina Kingdom
- Queen
- Ranavalona I
- Prime minister
- Rainiharo
Morocco: Alaouite dynasty
- Sultan
- Abd al-Rahman
Oyo EmpireNigeria history
- Alaafin
- Atiba Atobatele
Republic of MarylandLiberia history
- Governor
- John Brown Russwurm
Americas
Conservative Republic of ChileChile history
- President
- Manuel Bulnes, then Manuel Montt
El SalvadorEl Salvador history
- President
- Doroteo Vasconcelos
- Acting President
- Francisco Dueñas, then José Félix Quirós
Empire of BrazilBrazil history
- Emperor
- Pedro II
First Costa Rican RepublicCosta Rica history
- President
- Juan Mora Porras
HondurasHonduras history
- President
- Juan Lindo
Miskito CoastNicaragua history
Oriental Republic of UruguayUruguay history
- Disputed with Joaquín Suárez
- Manuel Oribe
Republic of BoliviaBolivia history
- President
- Manuel Isidoro Belzu
Republic of GuatemalaGuatemala history
- President
- Rafael Carrera
Republic of ParaguayParaguay history
- President
- Carlos Antonio López
Republic of PeruPeru history
- President
- José Rufino Echenique
Second Empire of HaitiHaiti history
- Emperor
- Faustin Soulouque
Second Federal Republic of MexicoMexico history
- President
- Mariano Arista
State of VenezuelaVenezuela history
- President
- José Tadeo Monagas, then José Gregorio Monagas
United StatesUnited States history
- President
- Millard Fillmore
Asia
Aceh SultanateIndonesia history
Bruneian EmpireBrunei history
- Sultan
- Omar Ali Saifuddin II
Emirate of Afghanistan: Barakzai dynastyAfghanistan history
Emirate of BukharaUzbekistan history
Emirate of NejdSaudi Arabia history
Johor SultanateIndonesia history
- Sultan
- Ali
Kedah SultanateMalaysia history
Khanate of KokandUzbekistan history
Kingdom of ChampasakLaos history
- King
- Nark
Konbaung dynasty
- King
- Pagan
Ottoman EmpireTurkey history
- Sultan
- Abdülmecid I
- Grand Vizier
- Mustafa Reşid Pasha
Perak Sultanate: Siak dynastyMalaysia history
- Sultan
- Abdullah Muhammad Shah I
Qing dynastyChina history
- Emperor
- Xianfeng
Rattanakosin Kingdom of SiamThailand history
Ryukyu Kingdom: Second Shō dynastyJapan history
- King
- Shō Tai
Selangor SultanateMalaysia history
- Sultan
- Muhammad Shah
Sheikhdom of Abu DhabiUnited Arab Emirates history
Sheikhdom of DubaiUnited 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
- Sultan
- Omar Riayat Shah
Tokugawa shogunate of JapanJapan history
- Emperor
- Kōmei
Yogyakarta SultanateIndonesia history
- Sultan
- Hamengkubuwono V
Europe
Andorra
- Episcopal Co-Prince
- Simó de Guardiola i Hortoneda
- French Co-Prince
- Napoléon III
Anhalt-Bernburg
- Duke
- Alexander Karl
BelgiumBelgium history
- King
- Leopold I
- Prime minister
- Charles Rogier
Caucasian ImamateRussia history
- Imam
- Shamil
DenmarkDenmark history
- King
- Frederik VII
- Prime minister
- Adam Wilhelm Moltke
Duchy of Holstein
- Duke
- Frederik VII
Duchy of Limburg (1839–1867)
- Duke
- William III
Duchy of Nassau
- Duke
- Adolphe
Electorate of Brandenburg, Kingdom of Prussia
French Second RepublicFrance history
- President
- Louis-Napoléon Bonaparte
- Prime minister
- Léon Faucher
Grand Duchy of FinlandFinland history
- Grand Prince
- Nicholas I
Kingdom of Bavaria
- King
- Maximilian II
Kingdom of Bohemia
- King
- Francis Joseph
Kingdom of Croatia (Habsburg)Croatia history
- King
- Franz Joseph
Kingdom of Galicia and LodomeriaUkraine history
- King
- Francis Joseph I
Kingdom of GreeceGreece history
- King
- Otto
- Prime minister
- Antonios Kriezis
Kingdom of Hanover
- King
- Ernest Augustus
Kingdom of Lombardy–VenetiaItaly history
- King
- Francis Joseph I
Kingdom of PortugalPortugal history
- Queen
- Maria II
- King
- Ferdinand II
- Prime minister
- João Carlos Saldanha de Oliveira e Daun
Kingdom of Sardinia, Duchy of SavoyItaly history
- King of Sardinia, Duke of Savoy
- Victor Emmanuel II
Kingdom of Spain (1810–1873)Spain history
- Queen
- Isabella II
Kingdom of the NetherlandsNetherlands history
- King
- William III
- Prime minister
- Johan Rudolph Thorbecke
Kingdom of the Two SiciliesItaly history
- King
- Ferdinand II
Liechtenstein
- Prince
- Aloys II
LuxembourgLuxembourg history
- Grand Duke
- William III
- Prime minister
- Jean-Jacques Willmar
MoldaviaRomania history
- Prince
- Grigore Alexandru Ghica
Papal States
- Pope
- Pius IX
Principality of Waldeck and Pyrmont
- Prince
- George Victor
Principality of WallachiaRomania history
- Prince
- Barbu Știrbei
Russian EmpireRussia history
- Emperor
- Nicholas I
Saxe-Meiningen
- Duke
- Bernhard II
Sweden–Norway
- King
- Oscar I
SwitzerlandSwitzerland history
- President of the Confederation
- Josef Munzinger
United Kingdom of Great Britain and IrelandUnited Kingdom history
- Queen
- Victoria
- Prime minister
- John Russell
Oceania
Kingdom of Huahine
- Queen
- Teriitaria II