Sovereign-state flags in 1900

Sovereign states

Aceh Sultanate

Acre (until 15 March)

Acre (from 1 November)

Agadez (until 1900)

Andorra - variant

Andorra - variant

Angoche

Ankole

Argentina

Aro

Ashanti

Aussa

Austria-Hungary

Bali

Belgium

Bhutan

Biu (until 1900)

Bolivia

Brazil

Bulgaria

Busoga

Canada

Chile

China

Chokwe

Colombia

Congo

Costa Rica

Darfur

Dendi

Denmark

Dhala

Dominican Republic

Ecuador (until 31 October)

Ecuador (from 31 October)

El Salvador

Ethiopia

France

Geledi

Germany

Greece

Guatemala

Gumma

Haʾil

Haiti

Honduras

Igala

Igara

Ilé-Ifẹ̀ (until 1900)

Italy

Japan

Johor Sultanate

Kajara

Kano

Kasanje

Kebbi

Korea

Lafia Beri-Beri (until 1900)

Liberia

Liechtenstein

Luxembourg

Mbunda

Mexico

Monaco

Montenegro

Morocco

Muscat and Oman

Mutayr

Netherlands

Nicaragua

Niue (until 20 April)

Norway

Nri

Nshenyi

Obwera

Onitsha (until 1900)

Orange Free State

Ottoman Empire

Paraguay

Paraguay (obverse)

Pattani

Persia

Peru

Philippines

Portugal

Potiskum

Romania

Rujumbura

Rukiga

Russia

San Marino

Serbia

Setul Mambang Segara

Siam

Sokoto

Spain

Sulu

Swaziland

Sweden

Switzerland

Tagant

Tonga (until 18 May)

Transvaal

Trarza

United Kingdom

United States

Upper Aulaqi Sheikhdom

Upper Aulaqi Sultanate

Upper Yafa

Uruguay

Venezuela

Wadai

Wajoq

Wukari (until 1900)

Colonies, concessions, possessions, protectorates, mandates and territories

Danish West Indies (Denmark)

Faroe Islands (Denmark)

Greenland (Denmark)

Iceland (Denmark)

Anglo-Egyptian Sudan (Egypt and United Kingdom)

French Algeria (France)

French Chad (from 5 September; France)

French Comoros (France)

French Congo (France)

French Guiana (France)

French India (France)

French Indochina (France)

French Ivory Coast (France)

French Madagascar (France)

French Polynesia (France)

French Somaliland (France)

French Tunisia (France)

French West Africa (France)

Gambier Islands (France)

Guadeloupe (France)

Guangzhouwan (until 5 January; France)

Hankou (France)

Martinique (France)

New Caledonia (France)

Réunion (France)

Saint Pierre and Miquelon (France)

Shanghai (France)

Tientsin (France)

Ubangi-Shari (France)

Wallis and Futuna (France)

German East Africa (Germany)

German Kiautschou (Germany)

German New Guinea (Germany)

German Samoa (from 1 March; Germany)

German South West Africa (Germany)

Hankou (Germany)

Kamerun (Germany)

Tientsin (Germany)

Togoland (Germany)

Italian Eritrea (Italy)

Italian Somaliland (Italy)

Chongqing (Japan)

Hangzhou (Japan)

Hankou (Japan)

Shashi (Japan)

Suzhou (Japan)

Taiwan (Japan)

Tientsin (Japan)

Isla de la Pasión (Mexico)

Curaçao and Dependencies (Netherlands)

Dutch East Indies (Netherlands)

Surinam (Netherlands)

Sverdrup Islands (Norway)

Crete (Ottoman Empire)

Egypt (Ottoman Empire)

Mecca (Ottoman Empire)

Qatar (Ottoman Empire)

Samos (Ottoman Empire)

Portuguese Cape Verde (Portugal)

Kongo (Portugal)

Portuguese East Africa (Portugal)

Portuguese Guinea (Portugal)

Portuguese India (Portugal)

Portuguese Macau (Portugal)

Portuguese São Tomé and Príncipe (Portugal)

Portuguese Timor (Portugal)

Portuguese West Africa (Portugal)

Fort of São João Baptista de Ajudá (Portugal)

Bukhara (Russia)

Khiva (Russia)

Tientsin (Russia)

Finland (Russia)

Champasak (Siam)

Elobey, Annobón, and Corisco (Spain)

Fernando Po (Spain)

Río Muni (Spain)

Spanish North Africa (Spain)

Spanish Sahara (Spain)

Aden (United Kingdom)

Afghanistan (United Kingdom)

Amoy (United Kingdom)

Ascension Island (United Kingdom)

Australia (United Kingdom)

Bahamas (United Kingdom)

Bahrain (United Kingdom)

Baker Island (United Kingdom)

Barbados (United Kingdom)

Barotziland–North-Western Rhodesia (United Kingdom)

Basutoland (United Kingdom)

Bechuanaland (United Kingdom)

Bermuda (United Kingdom)

British Central Africa (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 Trinidad and Tobago (United Kingdom)

British Western Pacific Territories (United Kingdom)

British Windward Islands (United Kingdom)

Brunei (United Kingdom)

Cape Colony (United Kingdom)

Colony of Natal (United Kingdom)

Cook Islands Federation (United Kingdom)

Cozumel (United Kingdom)

Falkland Islands Dependencies (United Kingdom)

Federated Malay States (United Kingdom)

Friendly Islands (until 1900; 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)

Kedah (United Kingdom)

Kelantan (United Kingdom)

Kuwait (United Kingdom)

Lagos (United Kingdom)

Maldives (United Kingdom)

Malta (United Kingdom)

Muscat and Oman (United Kingdom)

Nepal (United Kingdom)

Newfoundland (United Kingdom)

New South Wales (until 1900; United Kingdom)

New Zealand (United Kingdom)

Niger Districts (until 1900; United Kingdom)

Niue (from 21 April; United Kingdom)

North Borneo (United Kingdom)

Northern Nigeria Protectorate (United Kingdom)

North-Eastern Rhodesia (from 29 January; United Kingdom)

New Guinea (United Kingdom)

Papua (United Kingdom)

Perlis (United Kingdom)

Queensland (until 1900; United Kingdom)

Rhodesia (United Kingdom)

Saint Helena (United Kingdom)

Sarawak (United Kingdom)

Seychelles (United Kingdom)

Sierra Leone (United Kingdom)

Sikkim (United Kingdom)

South Australia (until 1900; United Kingdom)

Southern Nigeria (from 1 January; United Kingdom)

Straits Settlements (United Kingdom)

Suez Canal (United Kingdom)

Tasmania (until 1900; 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 (until 1900; United Kingdom)

Victoria Land (United Kingdom)

Weihai (United Kingdom)

Western Australia (until 1900; United Kingdom)

Zanzibar (United Kingdom)

Zhenjiang (United Kingdom)

Alaska (United States)

American Samoa (United States)

Arizona (United States)

Bajo Nuevo Bank (United States)

Cuba (United States)

Guam (United States)

Hawaii (United States)

Howland Island (United States)

Indian Territory (United States)

Johnston Atoll (United States)

Kingman Reef (United States)

Middlebrook Island (United States)

Midway Atoll (United States)

Navassa Island (United States)

New Mexico (United States)

Oklahoma (United States)

Palmyra Atoll (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)

Tientsin (United States)

Wake Island (United States)

Constituent U.S. states

Alabama

Arkansas

California

Colorado

Connecticut

Delaware

Florida (until 6 November)

Florida (from 6 November)

Georgia

Idaho

Illinois

Indiana

Iowa

Kansas

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Minnesota

Mississippi

Missouri

Montana

Nebraska

Nevada

New Hampshire

New Jersey

New York

North Carolina

North Dakota

Ohio

Oregon (until mid-1900)

Oregon (from mid-1900)

Pennsylvania

Rhode Island

South Carolina

South Dakota

Tennessee

Texas

Utah

Vermont

Virginia

Washington

West Virginia

Wisconsin

Wyoming

Other entities

Cruzob

Dervish State

Jungle Nation (until 27 February)

Negros

Other culturals

Buddhism