Sovereign-state flags in 1918

Sovereign states

Albania

Andorra

Argentina

Armenia (from 28 May)

Aussa

Asir

Australia

Austria (from 31 October)

Austria-Hungary (until 31 October)

Azerbaijan (from 28 May)

Belgium

Bolivia

Brazil

Bulgaria

Canada

Chile

China

Colombia

Costa Rica

Cuba

Czechoslovakia (from 28 October)

Denmark

Dominican Republic

Ecuador

El Salvador

Republic of Estonia (from 24 February)

Commune of the Working People of Estonia (from 29 November)

Ethiopia

Finland (from 1 January)

Finnish Socialist Workers' Republic (29 January–5 May)

France

Georgia (from 26 May)

Germany (until 9 November)

Germany (from 9 November)

Greece

Guatemala

Ha'il

Haiti

Hejaz

Honduras

Hungary (from 31 October)

Iceland (from 1 December)

Italy

Japan

Republic of Latvia (18 November–17 December)

Latvian Socialist Soviet Republic (from 17 December)

Liberia

Liechtenstein

Lithuania (16 February–December)

Lithuanian Soviet Socialist Republic (from 16 December)

Luxembourg

Mexico

Monaco

Mongolia

Montenegro

Mountain Republic

Muscat and Oman

Nejd and Hasa

Netherlands

Newfoundland

New Zealand

Nicaragua

Norway

Ottoman Empire

Panama

Paraguay

Paraguay

Persia

Peru

Poland

Portugal

Romania

Russia

Russian Soviet Republic (14 April)

Russian Soviet Republic/Russian Soviet Federative Socialist Republic (from 17 June)

San Marino

Serbia (until 1 December)

Serbs, Croats and Slovenes (from 1 December)

Siam

South Africa

Spain

Sweden

Switzerland

Tibet

Transcaucasia (22 February–28 May)

United Kingdom

United States

Upper Asir

Uruguay

Venezuela

Yemen (from 30 October)

Colonies, concessions, possessions, protectorates, mandates and territories

Bosnia and Herzegovina (until 1 December; Austria-Hungary)

Territory of New Guinea (Australia)

Norfolk Island (Australia)

Papua (Australia)

Belgian Congo (Belgium)

Ruanda-Urundi (Belgium)

Tianjin (Belgium)

Greenland (Denmark)

Iceland (until 1 December; Denmark)

Anglo-Egyptian Sudan (Egypt and United Kingdom)

French Algeria (France)

French Cameroon (France)

French Equatorial Africa (France)

French Guiana (France)

French India (France)

French Indochina (France)

French Madagascar (France)

French Morocco (France)

French Polynesia (France)

French Somaliland (France)

French Togoland (France)

French Tunisia (France)

French West Africa (France)

Gambier Islands (France)

Guadeloupe (France)

Hankou (France)

Martinique (France)

New Caledonia (France)

New Hebrides (France)

Réunion (France)

Saint Pierre and Miquelon (France)

Shanghai (France)

Tientsin (France)

Ubangi-Shari (France)

Wallis and Futuna (France)

German East Africa (until 25 November; Germany)

German New Guinea (Germany)

German Samoa (Germany)

German South-West Africa (Germany)

Amoy (Italy)

Italian Cyrenaica (Italy)

Italian Eritrea (Italy)

Italian Somaliland (Italy)

Italian Tripolitania (Italy)

Shanghai (Italy)

Tientsin (Italy)

Chongqing (Japan)

Hangzhou (Japan)

Hankou (Japan)

Japanese Korea (Chōsen) (Japan)

Karafuto (Japan)

Kwantung (Japan)

Shashi (Japan)

South Seas Mandate (Japan)

Suzhou (Japan)

Taiwan (Japan)

Isla de la Pasión (Mexico)

Curaçao and Dependencies (Netherlands)

Dutch East Indies (Netherlands)

Surinam (Netherlands)

Cook Islands (New Zealand)

Niue (New Zealand)

Sverdrup Islands (Norway)

Portuguese Cape Verde (Portugal)

Portuguese Macau (Portugal)

Portuguese East Africa (Portugal)

Portuguese Guinea (Portugal)

Portuguese India (Portugal)

Portuguese Timor (Portugal)

Portuguese West Africa (Portugal)

Fort of São João Baptista de Ajudá (Portugal)

Portuguese São Tomé and Príncipe (Portugal)

Bukhara (Russia)

Idel-Ural (1–28 March; Russia)

Khiva (Russia)

Uryankhay Krai (until mid-1918; Russia)

Uryankhay Krai (from mid-1918; Russia)

Tientsin (until 14 April; Russia)

Tientsin (14 April; Russia)

Tientsin (14 April to 17 June; Russia)

Tientsin (from 17 June; Russia)

Elobey, Annobón, and Corisco (Spain)

Fernando Poo (Spain)

Río Muni (Spain)

Spanish Morocco (Spain)

Spanish North Africa (Spain)

Spanish Sahara (Spain)

South West Africa (South Africa)

Aden (United Kingdom)

Afghanistan (United Kingdom)

Amoy (United Kingdom)

Ascension Island (United Kingdom)

Bahamas (United Kingdom)

Bahrain (United Kingdom)

Baker Island (United Kingdom)

Barbados (United Kingdom)

Basutoland (United Kingdom)

Bechuanaland (United Kingdom)

Bermuda (United Kingdom)

Bhutan (United Kingdom)

British Cameroon (United Kingdom)

British Ceylon (United Kingdom)

British Cyprus (United Kingdom)

British East Africa (United Kingdom)

British Guiana (United Kingdom)

British Honduras (United Kingdom)

British Hong Kong (United Kingdom)

British Jamaica (United Kingdom)

British Leeward Islands (United Kingdom)

British Mauritius (United Kingdom)

British Somaliland (United Kingdom)

British Togoland (United Kingdom)

British Trinidad and Tobago (United Kingdom)

British Western Pacific Territories (United Kingdom)

British Windward Islands (United Kingdom)

Brunei (United Kingdom)

Egypt (United Kingdom)

Falkland Islands (United Kingdom)

Federated Malay States (United Kingdom)

Gambia (United Kingdom)

Gibraltar (United Kingdom)

Gold Coast (United Kingdom)

Graham Land (United Kingdom)

Guernsey (United Kingdom)

Hankou (United Kingdom)

Heard Island and McDonald Islands (United Kingdom)

India (United Kingdom)

Isle of Man (United Kingdom)

Jarvis Island (United Kingdom)

Jersey (United Kingdom)

Jiujiang (United Kingdom)

Johor (United Kingdom)

Kedah (United Kingdom)

Kelantan (United Kingdom)

Kuwait (United Kingdom)

Maldives (United Kingdom)

Malta (United Kingdom)

Nepal (United Kingdom)

Nigeria (United Kingdom)

North Borneo (United Kingdom)

Northern Rhodesia (United Kingdom)

Nyasaland (United Kingdom)

Perlis (United Kingdom)

Qatar (United Kingdom)

Rhodesia (United Kingdom)

Saint Helena (United Kingdom)

Sarawak (United Kingdom)

Seychelles (United Kingdom)

Sierra Leone (United Kingdom)

Sikkim (United Kingdom)

South Orkney Islands (United Kingdom)

South Shetland Islands (United Kingdom)

Straits Settlements (United Kingdom)

Suez Canal (United Kingdom)

Swaziland (United Kingdom)

Tanganyika (United Kingdom)

Terengganu (United Kingdom)

Tientsin (United Kingdom)

Tristan da Cunha (United Kingdom)

Trucial States (United Kingdom)

Uganda (United Kingdom)

Union Islands (United Kingdom)

Victoria Land (United Kingdom)

Weihai (United Kingdom)

Zanzibar (United Kingdom)

Zhenjiang (United Kingdom)

Alaska (United States)

American Samoa (United States)

American Tonga (United States)

Bajo Nuevo Bank (United States)

California (United States)

Corn Islands (United States)

Guam (United States)

Hawaii (United States)

Howland Island (United States)

Johnston Atoll (United States)

Kingman Reef (United States)

Middlebrook Island (United States)

Midway Atoll (United States)

Navassa Island (United States)

Panama Canal Zone (United States)

Philippine Islands (United States)

Puerto Rico (United States)

Quita Sueño Bank (United States)

Roncador Bank (United States)

Serrana Bank (United States)

Serranilla Bank (United States)

Swan Islands (United States)

United States Virgin Islands (United States)

Wake Island (United States)

Australian states

New South Wales

Queensland

South Australia

Tasmania

Victoria

Western Australia

Canadian states

Alberta

British Columbia

Manitoba

New Brunswick

Northwest Territories

Nova Scotia

Ontario

Prince Edward Island

Quebec

Saskatchewan

Yukon Territory

Sovereign U.S. states

Alabama

Arizona

Arkansas

California

Colorado

Connecticut

Delaware

Florida

Georgia

Idaho

Illinois

Indiana

Iowa

Kansas

Kentucky (until 26 March)

Kentucky (from 26 March)

Louisiana

Maine

Maryland

Massachusetts

Michigan

Minnesota

Mississippi

Missouri

Montana

Nebraska

Nevada

New Hampshire

New Jersey

New Mexico

New York

North Carolina

North Dakota

Ohio

Oklahoma

Oregon

Pennsylvania

Rhode Island

South Carolina

South Dakota

Tennessee

Texas

Utah

Vermont

Virginia

Washington

West Virginia

Wisconsin

Wyoming

Other entities

Alash

Alchensk (from 1918)

Alsace-Lorraine (10–22 November)

Altai

Aras (from December)

Banat Republic (from 31 October)

Bavaria (from 8 November)

Belarus (from 9 March)

Centrocaspian Dictatorship (from 26 July)

Courland and Semigallia (from 8 March)

Crimea (until January)

Crimea (from May)

Don (from 1918)

Donbas and Kryvbas (from 1918)

Idel-Ural (from 1 March)

Kars Republic (from 1918)

Kokland (until 22 February)

Komancza (from 1919)

Kuban (from 28 January)

Lemko Republic (from 5 December)

Lithuanian Soviet Socialist Republic (from 16 December)

Moldova (until 10 December)

Odessa (from 13 November)

Perloja (from 1918)

Saxony (from 1918)

Slovenes, Croats and Serbs (from 1918)

Tarnobrzeg (from 1918)

Tripolitania (from 1918)

Uhtua (from 1918)

Ukrainian People's Republic of Soviets (until March)

Ukrainian People's Republic (from 22 January)

Ukrainian State (29 April–14 December)

West Ukrainian People's Republic (from 1918)

Zakopane (from 1918)

Other culturals

Buddhism

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