List of sovereign states in the 1920s

Sovereign states

A

• Emirate of Afghanistan
• Kingdom of Afghanistan
• Emirate of Afghanistan
• Kingdom of Afghanistan

• Principality of Albania
• Albanian Republic
• Albanian Kingdom

• Republic of Armenia
• Armenian Socialist Soviet Republic

• Nauru
• New Guinea – Territory of New Guinea

• Azerbaijan Democratic Republic
• Azerbaijan Socialist Soviet Republic

B

C

• Czecho-Slovak Republic
• Czechoslovak Republic

D

E

F

G

• Kingdom of Greece
• Hellenic Republic

H

I

J

L

• Republic of Latvia
• Latvian Socialist Soviet Republic

M

• Mongolian People's Government
• Mongolian People's Republic

N

• Emirate of Nejd
• Sultanate of Nejd

• Nejd
• * Sultanate of Nejd
• * Kingdom of Nejd and its Dependencies
• Hejaz – Kingdom of Hejaz

O

• Turkey

P

• Persian Empire
• Imperial State of Persia

R

S

• Kingdom of Serbs, Croats, and Slovenes
• Kingdom of Yugoslavia

T

• Turkey
• Republic of Turkey

U

• United Kingdom of Great Britain and Ireland
• United Kingdom of Great Britain and Northern Ireland

• '
• Bahrain – State of Bahrain
• Baker Island
• '
• Basutoland – Territory of Basutoland
• Bechuanaland – Bechuanaland Protectorate
• Bermuda
• Bhutan – Kingdom of Bhutan
• '
• '
• British Leeward Islands – Federal Colony of the Leeward Islands
• ' – British Somaliland Protectorate
• British West Africa
• * Gambia – Gambia Colony and Protectorate
• * '
• * Nigeria – Colony and Protectorate of Nigeria
• * Sierra Leone – Sierra Leone Colony and Protectorate
• British Western Pacific Territories
• British Windward Islands – Federal Colony of the Windward Islands
• Brunei – State of Brunei
• '
• Cyprus
• East Africa
• * Kenya – Kenya Colony and Protectorate
• * Uganda
• * Tanganyika – Tanganyika Territory
• Falkland Islands
• Federated Malay States
• Fiji
• '
• Guernsey – Bailiwick of Guernsey
• Heard Island and McDonald Islands
• Hong Kong
• ' – Indian Empire
• Isle of Man
• Jamaica
• Jarvis Island
• ' – Bailiwick of Jersey
• Kuwait – State of Kuwait
• Maldive Islands – Sultanate of the Maldive Islands
• Malta
• Mauritius
• Muscat and Oman – Sultanate of Muscat and Oman
• '
• Northern Rhodesia – Protectorate of Northern Rhodesia
• ' – Nyasaland Protectorate
• Qatar – State of Qatar
• Saint Helena
• Sarawak – Kingdom of Sarawak
• Seychelles
• ' – Colony of Southern Rhodesia
• '
• Swaziland – Swaziland Protectorate
• '
• Tristan da Cunha
• Trucial States
• Unfederated Malay States
• * ' – State of Johor Darul Ta'zim
• * ' – State of Kedah Darul Aman
• * ' – State of Kelantan Darul Naim
• * ' – State of Perlis Indera Kayangan
• * Terengganu – State of Terengganu Darul Iman
• Victoria Land
• Weihaiwei
• Sultanate of Zanzibar

• Alaska – Alaska Territory
• American Samoa – Territory of American Samoa
• Corn Islands
• Guam – Territory of Guam
• Hawaii – Territory of Hawaii
• Howland Island
• Johnston Atoll
• Kingman Reef
• Midway Atoll
• Navassa Island
• '
• Petrel Islands
• Philippine Islands
• Puerto Rico
• Quita Sueno Bank
• Roncador Bank
• Serrana Bank
• Serranilla Bank
• Swan Islands

V

Y

Other states

• Alash – Alash Autonomy
• Ararat – Republic of Ararat
• Armenia, Mountainous
• Azadistan
• Baranya-Baja – Serb-Hungarian Baranya-Baja Republic
• Bottleneck – Free State Bottleneck
• Bukharan
• * Bukharan People's Soviet Republic
• * Bukharan Socialist Soviet Republic
• Byelorussia – Byelorussian Socialist Soviet Republic
• Carnaro – Italian Regency of Carnaro
• Central Lithuania – Republic of Central Lithuania
• Don – Don Republic
• '
• Galicia – Galician Socialist Soviet Republic
• Georgia, Soviet – Socialist Soviet Republic of Georgia
• Gilan – Persian Socialist Soviet Republic
• Ireland – Irish Republic
• → Khiva
• Khorasan – Autonomous Government of Khorasan
• Khorezm
• * Khanate of Khiva
• * Khorezm People's Soviet Republic
• * Khorezm Socialist Soviet Republic
• ' – Kuban People's Republic
• Kurdistan – Kingdom of Kurdistan
• ' – Labin Republic
• Lajtabánság – Banate of Leitha
• Lemko-Rusyn – Lemko-Rusyn Republic
• Mirdita – Republic of Mirdita
• Mongolia
• ' – Sultanate of Morocco
• North Caucasian Emirate
• North Ingria – Republic of North Ingria
• – Mandatory Palestine
• Rhineland – Rhenish Republic
• Rif – Confederal Republic of the Tribes of the Rif
• Siberia, Autonomous – Provisional Government of Autonomous Siberia
• Tannu Tuva
• * People's Republic of Tannu Tuva
• * Tuvan People's Republic
• Tibet
• Ukraine, Soviet''' – Ukrainian Socialist Soviet Republic

  League of Nations Mandates

• British Cameroons
• British Togoland
• French Cameroons
• French Togoland
• Nauru
• New Guinea – Territory of New Guinea
• Palestine
• * Transjordan – Emirate of Transjordan
• Ruanda-Urundi
• South Pacific Mandate
• South-West Africa
• Syria and Lebanon
• * Alawite
• ** Alawite Territory
• ** Alawite State
• * Lebanon
• ** State of Greater Lebanon
• ** Lebanese Republic
• * Syria
• ** Syrian Federation
• ** State of Syria
• *** Aleppo – State of Aleppo
• *** Damascus – State of Damascus
• * → Souaida – State of Souaida
• Tanganyika – Tanganyika Territory
• Western Samoa

• Mesopotamia – Kingdom of Iraq