World leaders in 1920

Everyone who held a state’s top posts at some point in 1920, 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 1920 →

Major powers in 1920

United StatesUnited States history

United KingdomUnited Kingdom history

Prime minister
David Lloyd George

RussiaRussia history

Republic of China (1916–1949)China history

President
Xu Shichang

French Third RepublicFrance history

President of the Council of ministers
Georges Clemenceau, then Alexandre Millerand, then Georges Leygues

Weimar Republic of GermanyGermany history

Empire of JapanJapan history

Emperor
Taishō
Prime minister
Hara Takashi

Africa

Beylik of TunisTunisia history

Grand vizier
Taïeb Djellouli

Ethiopian Empire

Empress
Zewditu I

Kingdom of Rwanda

LiberiaLiberia history

Sultanate of EgyptEgypt history

Sultanate of Morocco: Alaouite dynasty

Sultan
Yusef

Sultanate of Zanzibar

Union of South AfricaSouth Africa history

Prime minister
Jan Smuts

Americas

Argentine RepublicArgentina history

BoliviaBolivia history

CanadaCanada history

Prime minister
Robert Borden, then Arthur Meighen

Dominion of NewfoundlandCanada history

EcuadorEcuador history

El SalvadorEl Salvador history

First Brazilian RepublicBrazil history

First Costa Rican RepublicCosta Rica history

GuatemalaGuatemala history

HondurasHonduras history

Acting President
Francisco Bográn

MexicoMexico history

NicaraguaNicaragua history

Parliamentary Era ChileChile history

Republic of ColombiaColombia history

Republic of CubaCuba history

Republic of Haiti (1859–1957)Haiti history

Republic of ParaguayParaguay history

Republic of PeruPeru history

Constitutional President
Augusto B. Leguía y Salcedo

United StatesUnited States history

UruguayUruguay history

President
Baltasar Brum

Asia

Ankara Government of Turkey (1920–1923)Turkey history

Arab Kingdom of SyriaSyria history

Prime minister
Rida Pasha al-Rikabi
Acting Prime minister
Hashim al-Atassi

Bogd Khanate of MongoliaMongolia history

Khagan
Bogd Khan

Emirate of Abu DhabiTurkey history

Emirate of AjmanTurkey history

Emirate of BukharaUzbekistan history

Emirate of DubaiTurkey history

Emirate of FujairahTurkey history

Emirate of SharjahTurkey history

Empire of JapanJapan history

Emperor
Taishō
Prime minister
Hara Takashi

French Protectorate of Luang PhrabangLaos history

King of Luang Phrabang
Sisavang Vong

Hakims of BahrainBahrain history

Kedah SultanateMalaysia history

Kingdom of HejazSaudi Arabia history

Mandatory Iraq: Kingdom of Iraq under British AdministrationIraq history

Negeri SembilanMalaysia history

Yamtuan
Muhammad

Nguyễn dynastyVietnam history

North Yemen: Mutawakkilite Kingdom of YemenYemen history

Ottoman (Turkish) EmpireTurkey history

Sultan
Mehmed VI

PakualamanIndonesia history

Perak Sultanate: Siak dynastyMalaysia history

Sultan
Iskandar

Protectorate of BruneiBrunei history

QatarQatar history

Republic of China (1916–1949)China history

President
Xu Shichang

Saudi ArabiaSaudi Arabia history

Selangor SultanateMalaysia history

Sultan
Sulaiman

Sheikhdom of KuwaitKuwait history

Sheikh
Salim I

Siam/Thailand: Rattanakosin KingdomThailand history

Sublime State of Persia: Qajar dynastyIran history

Sultanate of Siak Sri IndrapuraIndonesia history

Sultanate/ State of Muscat and OmanOman history

Sultan
Taimur

Surakarta SunanateIndonesia history

Terengganu SultanateMalaysia history

Umm Al QuwainTurkey history

Yogyakarta SultanateIndonesia history

Europe

Andorra

Episcopal Co-Prince
Justí Guitart i Vilardebó

Azerbaijan Democratic RepublicAzerbaijan history

BelgiumBelgium history

Bourbon Restoration of SpainSpain history

Czechoslovakia: First Republic

Prime Minister
Vlastimil Tusar, then Jan Černý

Democratic Republic of GeorgiaGeorgia history

Prime minister
Noe Zhordania

Fascist Italy (1922–1943)Italy history

First Austrian Republic/ Federal State of AustriaAustria history

Chancellor
Karl Renner, then Michael Mayr

First Portuguese RepublicPortugal history

First Republic of ArmeniaArmenia history

French Third RepublicFrance history

President of the Council of ministers
Georges Clemenceau, then Alexandre Millerand, then Georges Leygues

Grand Duchy of LuxembourgLuxembourg history

Grand Duchess
Charlotte
Prime minister
Émile Reuter

Hungarian Republic (1919–1920)Hungary history

Prime minister
Károly Huszár

Kingdom of BulgariaBulgaria history

Kingdom of DenmarkDenmark history

Kingdom of GreeceGreece history

Kingdom of Hungary (1920–1946)Hungary history

Kingdom of IcelandIceland history

Prime minister
Jón Magnússon

Kingdom of ItalyItaly history

Kingdom of NorwayNorway history

Kingdom of RomaniaRomania history

Kingdom of Serbia / Yugoslavia: Kingdom of Serbs, Croats and Slovenes / Kingdom of Yugoslavia

Kingdom of SwedenSweden history

Liechtenstein

Prince
Johann II

Monaco

Prince
Albert I
Minister of state
Raymond Le Bourdon

NetherlandsNetherlands history

Principality of AlbaniaAlbania history

Prince in exile
Wilhelm
Chairman of the Provisional Government
Turhan Përmeti, then Sulejman Delvina

Republic of EstoniaEstonia history

State Elder
Ants Piip
Prime minister
Jaan Tõnisson, then Ado Birk, then Ants Piip

Republic of FinlandFinland history

Prime minister
Juho Vennola, then Rafael Erich

Republic of LatviaLatvia history

Prime minister
Kārlis Ulmanis

Republic of LithuaniaLithuania history

Russian Soviet Federative Socialist Republic, Sovereign state (1917–1922)Russia history

Russian State (1918–1920)Russia history

Supreme Ruler
Alexander Kolchak

Second Polish RepublicPoland history

Chief of State
Józef Piłsudski

SwitzerlandSwitzerland history

President of the Confederation
Giuseppe Motta

Ukrainian People's RepublicUkraine history

United Kingdom of Great Britain and IrelandUnited Kingdom history

Prime minister
David Lloyd George

Weimar Republic of GermanyGermany history

Oceania

AustraliaAustralia history

Prime minister
Billy Hughes

Dominion of New ZealandNew Zealand history

Prime minister
William Massey

Kingdom of Tonga (1900–70)Tonga history

Kings of Uvea (Wallis)