List of sovereign states in 1921

Sovereign states by year
List of sovereign states in 1920	Events of 1921	List of sovereign states in 1922

Sovereign states

Political map of the world in 1921

A

• Abkhazia - Socialist Soviet Republic of Abkhazia (from March 31)
• Afghanistan - Emirate of Afghanistan
• Albania - Principality of Albania
• Andorra - Principality of Andorra
• Argentina - Argentine Republic
• Armenia - Armenian Socialist Soviet Republic
• Asir - Emirate of Asir
• Australia - Commonwealth of Australia
• Austria - Federal State of Austria
• Azerbaijan - Azerbaijan Socialist Soviet Republic

B

• Belgium - Kingdom of Belgium
• Bolivia - Republic of Bolivia
• Brazil - Republic of the United States of Brazil
• Bulgaria - Kingdom of Bulgaria

C

• Canada - Dominion of Canada
• Chile - Republic of Chile
• China - Republic of China
• Colombia - Republic of Colombia
• Costa Rica - Republic of Costa Rica
• Cuba - Republic of Cuba
• Czechoslovakia - Czechoslovak Republic

D

• Danzig - Free City of Danzig
• Denmark - Kingdom of Denmark
• Dominican Republic

E

• Ecuador - Republic of Ecuador
• El Salvador - Republic of El Salvador (to October 1)
• Estonia - Republic of Estonia
• Ethiopia - Ethiopian Empire

F

• Finland - Republic of Finland
• Fiume - Free State of Fiume
• France - French Republic

G

• Georgia - Democratic Republic of Georgia (to February 11)
• Germany - German Reich
• Greece - Kingdom of Greece
• Guatemala - Republic of Guatemala (to October 1)

H

• Ha'il - Emirate of Ha'il (to November 2)
• Haiti - Republic of Haiti
• Hejaz - Kingdom of Hejaz
• Honduras - Republic of Honduras (to October 1)
• Hungary - Kingdom of Hungary

I

• Iceland - Kingdom of Iceland
• Italy - Kingdom of Italy

J

• Japan - Empire of Japan

L

• Latvia - Republic of Latvia
• Liberia - Republic of Liberia
• Liechtenstein - Principality of Liechtenstein
• Lithuania - Republic of Lithuania
• Luxembourg - Grand Duchy of Luxembourg

M

• Mexico - United Mexican States
• Monaco - Principality of Monaco
• Mongolia - Mongolian People's Government (from July 11)

N

• Nejd
  • Emirate of Nejd (to August 22)
  • Sultanate of Nejd (from August 22)
• Nepal - Kingdom of Nepal
• Netherlands - Kingdom of the Netherlands
• Newfoundland - Dominion of Newfoundland
• New Zealand - Dominion of New Zealand
• Nicaragua - Republic of Nicaragua
• Norway - Kingdom of Norway

O

• Ottoman Empire - Sublime Ottoman State

P

• Panama - Republic of Panama
• Paraguay - Republic of Paraguay
• Persia - Persian Empire
• Peru - Peruvian Republic
• Poland - Republic of Poland
• Portugal - Portuguese Republic

R

• Romania - Kingdom of Romania
• Russia - Russian Socialist Federative Soviet Republic

S

• San Marino - Most Serene Republic of San Marino
• Serbs, Croats and Slovenes - Kingdom of Serbs, Croats, and Slovenes
• Siam - Kingdom of Siam
• South Africa - Union of South Africa
• Spain - Kingdom of Spain
• Sweden - Kingdom of Sweden
• Switzerland - Swiss Confederation

U

• United Kingdom - United Kingdom of Great Britain and Ireland
• United States - United States of America
• Uruguay - Eastern Republic of Uruguay

V

• Venezuela - United States of Venezuela

Y

• Yemen - Mutawakkilite Kingdom of Yemen

Other states

• Armenia, Mountainous (from April 26 to July)
• Baranya-Baja - Serb-Hungarian Baranya-Baja Republic (from August 14 to August 25)
• Bottleneck - Free State Bottleneck
• Bukharan - Bukharan People's Soviet Republic
• Byelorussia - Byelorussian Socialist Soviet Republic
• Central Lithuania - Republic of Central Lithuania
• Far Eastern Republic
• Georgia, Soviet - Socialist Soviet Republic of Georgia (from February 11)
• Gilan - Persian Socialist Soviet Republic (to September)
• Ireland - Irish Republic
• Khorezm - Khorezm People's Soviet Republic
• Khorasan - Autonomous Government of Khorasan (from April 2, 1921 to October 6, 1921)
• Labin - Labin Republic (from March 2 to April 8)
• Lajtabánság - Banat of Leitha (from October 4 to November 5)
• Mirdita - Republic of Mirdita (from July 17 to November 20)
• Mongolia (from February 21 to July 11)
• Morocco - Sultanate of Morocco (de jure sovereign state under French and Spanish protectorate)
• North Caucasian Emirate
• Provisional Priamurye Government
• Rif - Confederal Republic of the Tribes of the Rif (from September 18)
• Tannu Tuva - People's Republic of Tannu Tuva (from August 14)
• Tavolara - Kingdom of Tavolara
• Tibet
• Ukraine, Soviet - Ukrainian Socialist Soviet Republic

League of Nations Mandates

• Nauru (administered by Australia, New Zealand and the United Kingdom)
• New Guinea - Territory of New Guinea (administered by Australia)
• South Pacific Mandate (administered by Japan)
• South-West Africa (administered by South Africa)
• Western Samoa (administered by New Zealand)

Not enacted

• Mesopotamia - Kingdom of Iraq (from August 23) (administered by the United Kingdom)