List of sovereign states in 1921

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)^[1][2]
• 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)

References

1. International Law: Achievements and Prospects, p. 51, at Google Books
2. Repertory of Decisions of the International Court of Justice (1947–1992), p. 453, at Google Books