Sovereign-state flags in 1928

Sovereign states

Afghanistan (until June)

Afghanistan (June to July)

Afghanistan (from September) - variant

Afghanistan (from September) - variant

Afghanistan (from September) - variant

Albania (until 1 September)

Albania (from 1 September)

Andorra - variant

Andorra - variant

Argentina

Aussa

Australia

Austria

Belgium

Bolivia

Brazil

Bulgaria

Byelorussian Soviet Socialist Republic

Canada

Chile

China (until 9 December)

China (from 9 December)

Colombia

Costa Rica

Cuba

Czechoslovakia

Danzig

Denmark

Dominican Republic

Ecuador

Egypt

El Salvador

Estonia

Ethiopia

Finland

France

Germany

Greece

Guatemala

Haiti

Hejaz and Nejd

Honduras

Hungary

Iceland

Ireland

Italy

Japan

Latvia

Liberia

Liechtenstein

Lithuania

Luxembourg

Mexico

Monaco

Nepal

Netherlands

Newfoundland

New Zealand

Nicaragua

Norway

Panama

Paraguay

Paraguay

Persia

Peru

Poland

Portugal

Romania

Russian Soviet Federative Socialist Republic

San Marino

Kingdom of Serbs, Croats, and Slovenes (until 6 January)/ Yugoslavia (from 6 January)

Siam

South Africa (until 31 May)

South Africa (from 31 May)

Soviet Union

Spain

Sweden

Switzerland

Tibet

Transcaucasian SFSR

Turkey

Turkmen Soviet Socialist Republic

Ukrainian Soviet Socialist Republic

United Kingdom

Uzbek Soviet Socialist Republic

United States

Uruguay

Venezuela

Yemen

Colonies, concessions, possessions, protectorates, mandates and territories

Nauru (Australia)

New Guinea (Australia)

Norfolk Island (Australia)

Papua (Australia)

Belgian Congo (Belgium)

Ruanda-Urundi (Belgium)

Tientsin (Belgium)

Faroe Islands (Denmark)

Greenland (Denmark)

Anglo-Egyptian Sudan (Egypt and United Kingdom)

Åland (Finland)

Adélie Land (France)

Alawite (France)

French Algeria (France)

French Cameroon (France)

French Chad (France)

French Equatorial Africa (France)

French Guiana (France)

French India (France)

French Indochina (France)

French Madagascar (France)

French Morocco (France)

French Oceania (France)

French Somaliland (France)

French Togoland (France)

French Tunisia (France)

French West Africa (France)

Gambier Islands (France)

Guadeloupe (France)

Hankou (France)

Jabal ad-Druze (France)

Lebanon ​(France)

Martinique (France)

New Caledonia (France)

New Hebrides (France)

Saar (France and the United Kingdom)

Saint Pierre and Miquelon (France)

Syria (France)

Tientsin (France)

Ubangi-Shari (France)

Wallis and Futuna (France)

Asir (Nejd and Hejaz)

Amoy (Italy)

Italian Cyrenaica (Italy)

Italian Eritrea (Italy)

Italian Somaliland (Italy)

Italian Tripolitania (Italy)

Shanghai (Italy)

Tientsin (Italy)

Chongqing (Japan)

Hangzhou (Japan)

Hankou (Japan)

Karafuto (Japan)

Korea (Japan)

Kwantung (Japan)

Shashi (Japan)

South Seas Mandate (Japan)

Suzhou (Japan)

Taiwan (Japan)

Tientsin (Japan)

Isla de la Pasión (Mexico)

Curaçao and Dependencies (Netherlands)

Dutch East Indies (Netherlands)

Surinam (Netherlands)

Cook Islands (New Zealand)

Niue (New Zealand)

Ross Dependency (New Zealand)

Union Islands (New Zealand)

Western Samoa (New Zealand)

Bouvet Island (Norway)

Svalbard (Norway)

Sverdrup Islands (Norway)

Fort of São João Baptista de Ajudá (Portugal)

Portuguese Cape Verde (Portugal)

Portuguese Macau (Portugal)

Portuguese East Africa (Portugal)

Portuguese Guinea (Portugal)

Portuguese India (Portugal)

Portuguese Timor (Portugal)

Portuguese West Africa (Portugal)

Portuguese São Tomé and Príncipe (Portugal)

South West Africa (until 31 May; South Africa)

South West Africa (from 31 May; South Africa)

Ceuta (Spain)

Spanish Guinea (Spain)

Spanish Morocco (Spain)

Spanish Sahara (Spain)

Aden (United Kingdom)

Amoy (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 Cameroons (United Kingdom)

British Guiana (United Kingdom)

British Honduras (United Kingdom)

British Leeward Islands (United Kingdom)

British Somaliland (United Kingdom)

British Togoland (United Kingdom)

British Western Pacific Territories (United Kingdom)

British Windward Islands (United Kingdom)

Brunei (United Kingdom)

Ceylon (United Kingdom)

Cyprus (United Kingdom)

Falkland Islands (United Kingdom)

Federated Malay States (United Kingdom)

Gambia (United Kingdom)

Gibraltar (United Kingdom)

Gold Coast (United Kingdom)

Guernsey (United Kingdom)

Heard Island and McDonald Islands (United Kingdom)

Hong Kong (United Kingdom)

India (United Kingdom)

Iraq (United Kingdom)

Isle of Man (United Kingdom)

Jamaica (United Kingdom)

Jarvis Island (United Kingdom)

Jersey (United Kingdom)

Jiujiang (United Kingdom)

Johor (United Kingdom)

Kedah (United Kingdom)

Kelantan (United Kingdom)

Kenya (United Kingdom)

Kuwait (United Kingdom)

Maldives (United Kingdom)

Malta (United Kingdom)

Mauritius (United Kingdom)

Muscat and Oman (United Kingdom)

Nigeria (United Kingdom)

North Borneo (United Kingdom)

Northern Rhodesia (United Kingdom)

Nyasaland (United Kingdom)

Palestine (United Kingdom)

Perlis (United Kingdom)

Qatar (United Kingdom)

Saar Basin (United Kingdom)

Saint Helena (United Kingdom)

Sarawak (United Kingdom)

Seychelles (United Kingdom)

Sierra Leone (United Kingdom)

Sikkim (United Kingdom)

South Orkney Islands (United Kingdom)

Southern Rhodesia (United Kingdom)

South Shetland Islands (United Kingdom)

Straits Settlements (United Kingdom)

Suez Canal Zone (United Kingdom)

Swaziland (United Kingdom)

Tanganyika (United Kingdom)

Terengganu (United Kingdom)

Tientsin (United Kingdom)

Transjordan (until 16 April; United Kingdom)

Transjordan (from 16 April; United Kingdom)

Trinidad and Tobago (United Kingdom)

Trucial States (United Kingdom)

Uganda (United Kingdom)

Victoria Land (United Kingdom)

Weihaiwei (United Kingdom)

Zanzibar (United Kingdom)

Zhenjiang (United Kingdom)

Alaska (United States)

American Samoa (United States)

Baker Island (United States)

Corn Islands (United States)

Guam (United States)

Hawaii (United States)

Howland Island (United States)

Johnston Atoll (United States)

Kingman Reef (United States)

Midway Atoll (United States)

Navassa Island (United States)

Palmyra Atoll (United States)

Panama Canal Zone (United States)

Petrel Islands (United States)

Philippines (United States)

Puerto Rico (United States)

Quita Sueno 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

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

Ararat

Provisional Government of the Republic of Korea

Mongolia

Tangier

Tuva

Shanxi chique

Ma chinque

Yunann chique

New Guangxi clique

Kuomintang (until 9 December)

Other culturals

Buddhism

Esperanto

Pan-African Flag