World leaders in 1921

Everyone who held a state’s top posts at some point in 1921, 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 1921 →

Major powers in 1921

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 Leygues, then Aristide Briand

Weimar Republic of GermanyGermany history

Empire of JapanJapan history

Emperor
Taishō
Prime minister
Hara Takashi, then Takahashi Korekiyo

Africa

Beylik of TunisTunisia history

Grand vizier
Taïeb Djellouli

Ethiopian Empire

Empress
Zewditu I

Kingdom of Rwanda

LiberiaLiberia history

Republic of the Rif

President
Abd el-Krim

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

Dominion of NewfoundlandCanada history

El SalvadorEl Salvador history

First Brazilian RepublicBrazil history

First Costa Rican RepublicCosta Rica history

GuatemalaGuatemala history

HondurasHonduras history

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

Bogd Khanate of MongoliaMongolia history

Khagan
Bogd Khan

Emirate of Abu DhabiTurkey history

Emirate of AjmanTurkey history

Emirate of DubaiTurkey history

Emirate of FujairahTurkey history

Emirate of Ras Al KhaimahTurkey history

Emirate of TransjordanJordan history

Prime minister
Rashid Tali’a

Empire of JapanJapan history

Emperor
Taishō
Prime minister
Hara Takashi, then Takahashi Korekiyo

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
Grand Vizier
Ahmet Tevfik Pasha

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, then Ahmad 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
French Co-Prince
Alexandre Millerand

BelgiumBelgium history

Bourbon Restoration of SpainSpain history

Acting Prime minister
Gabino Bugallal Araújo

Czechoslovakia: First Republic

Prime Minister
Jan Černý, then Edvard Beneš

Democratic Republic of GeorgiaGeorgia history

Prime minister
Noe Zhordania

Fascist Italy (1922–1943)Italy history

First Austrian Republic/ Federal State of AustriaAustria history

First Portuguese RepublicPortugal history

French Third RepublicFrance history

President of the Council of ministers
Georges Leygues, then Aristide Briand

Grand Duchy of LuxembourgLuxembourg history

Grand Duchess
Charlotte
Prime minister
Émile Reuter

Kingdom of BulgariaBulgaria history

Kingdom of DenmarkDenmark history

Prime minister
Niels Neergaard

Kingdom of GreeceGreece history

Kingdom of Hungary (1920–1946)Hungary history

Prime minister
Pál Teleki, then István Bethlen

Kingdom of IcelandIceland history

Prime minister
Jón Magnússon

Kingdom of ItalyItaly history

Prime minister
Giovanni Giolitti, then Ivanoe Bonomi

Kingdom of Montenegro

President in-exile
Jovan Plamenac

Kingdom of NorwayNorway history

Prime minister
Otto Bahr Halvorsen, then Otto Blehr

Kingdom of RomaniaRomania history

Prime minister
Alexandru Averescu

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

Kingdom of SwedenSweden history

Liechtenstein

Prince
Johann II
Governor
Josef Peer, then Josef Ospelt

Monaco

Prince
Albert I
Minister of state
Raymond Le Bourdon

NetherlandsNetherlands history

Principality of AlbaniaAlbania history

Prince in exile
Wilhelm

Republic of EstoniaEstonia history

State Elder
Ants Piip, then Konstantin Päts

Republic of FinlandFinland history

Prime minister
Rafael Erich, then Juho Vennola

Republic of LatviaLatvia history

Republic of LithuaniaLithuania history

Prime minister
Kazys Grinius

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

Second Polish RepublicPoland history

Chief of State
Józef Piłsudski
Prime minister
Wincenty Witos, then Antoni Ponikowski

SwitzerlandSwitzerland history

President of the Confederation
Edmund Schulthess

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)