Red flag

Red flag

Red flag (lighter)

Nautical red signal flag

Formula 1 red flag

Flag of Oruro Department (department of Bolivia)

Flag of Sultanate of Muscat and Oman (at the end of the 19th century)

Siamese Ensign, c.1700-1855 (State Ensign until 1782)

Albania

Bahrain

Belarus

People's Republic of China

Republic of China (Taiwan)

Denmark

East Timor

Kyrgyzstan

Laos

Latvia

Maldives

Montenegro

Morocco

North Macedonia

Norway

Samoa

Switzerland

Tonga

Trinidad and Tobago

Tunisia

Turkey

Vietnam

Grodno Region (region of Belarus)

Mogilev Region (region of Belarus)

Minsk Region (region of Belarus)

Flag of Pará (state of Brazil)

Flag of Paraíba (state of Brazil)

Manitoba (province of Canada)

Ontario (province of Canada)

Hong Kong (special administrative region of the People's Republic of China)

Anjouan (autonomous island of the Comoros)

North Karelia (region of Finland)

Flag of Tavastia Proper (region of Finland)

Normandy (region of France)

Occitanie (region of France)

Wallis and Futuna (overseas collectivity of France)

Hamburg (state of Germany)

Abruzzo (region of Italy)

Piedmont (region of Italy)

Aichi Prefecture (prefecture of Japan)

Akita Prefecture (prefecture of Japan)

Hiroshima Prefecture (prefecture of Japan)

Kochi Prefecture (prefecture of Japan)

Kumamoto Prefecture (prefecture of Japan)

Niigata Prefecture (prefecture of Japan)

Shimane Prefecture (prefecture of Japan)

Batken Region (region of Kyrgyzstan)

Talas Region (region of Kyrgyzstan)

Kedah (state of Malaysia)

Kelantan (state of Malaysia)

Mon State (state of Myanmar)

Vestfold og Telemark (county of Norway)

Masovian Voivodeship (voivodeship of Poland)

Altai Krai (krai of Russia)

Amur Oblast (oblast of Russia)

Bryansk Oblast (oblast of Russia)

Chelyabinsk Oblast (oblast of Russia)

Kemerovo Oblast (oblast of Russia)

Krasnoyarsk Krai (krai of Russia)

Kursk Oblast (oblast of Russia)

Lipetsk Oblast (oblast of Russia)

Magadan Oblast (oblast of Russia)

Moscow (federal city of Russia)

Moscow Oblast (oblast of Russia)

Omsk Oblast (oblast of Russia)

Orenburg Oblast (oblast of Russia)

Flag of Oryol Oblast (oblast of Russia)

Saint Petersburg (federal city of Russia)

Smolensk Oblast (oblast of Russian)

Tula Oblast (oblast of Russia)

Vladimir Oblast (oblast of Russia)

Volgograd Oblast (oblast of Russia)

Voronezh Oblast (oblast of Russia)

Basque Country (autonomous community of Spain)

Community of Madrid (autonomous community of Spain)

Region of Murcia (autonomous community of Spain)

Navarre (autonomous community of Spain)

Scania County (county of Sweden)

Canton of Glarus (canton of Switzerland)

Canton of Nidwalden (canton of Switzerland)

Canton of Schwyz (canton of Switzerland)

Emirate of Abu Dhabi (emirate of the United Arab Emirates)

Emirate of Ajman (emirate of the United Arab Emirates)

Emirate of Dubai (emirate of the United Arab Emirates)

Umm Al Quwain (emirate of the United Arab Emirates)

Bermuda (overseas territory of the United Kingdom)

Isle of Man (crown dependency of the United Kingdom)

Arkansas (state of the United States)

Tennessee (state of the United States)

Flag of Sevastopol (disputed federal city of Ukraine and Russia)

Volyn Oblast (oblast of Ukraine)

Zhytomyr Oblast (oblast of Ukraine)

Carabobo (state of Venezuela)

Caracas (capital district of Venezuela)

Transnistria (unrecognised; de jure part of Moldova)

Hammer and sickle

Nazi-Germany (1935–1945)

Flag of APRA

Republic of Hatay (1938–1939)

Northern Cyprus (1983–1984)

Devrimci Halk Kurtuluş Partisi

Morocco (Naval Ensign)

Singapore

British Red Ensign

Mongolia (1924–1940)

Mongolia (1921–1924)

Medieval flag of Moldavia

Flag of Moldavia in 1601.

Macedonia (1992–1995)

Socialist Republic of Macedonia (1945–1991)

People's Republic of Bosnia and Herzegovina (1946–1991)

Naval Ensign of Serbia and Montenegro

Naval Jack of Serbia and Montenegro

Independentist Aceh flag

Brzeg, Poland

Ancient Benin flag

Essex, England

Kingdom of Laos (1952-1975)

Malta

Myanmar (1974-2010)

Burma (Myanmar) 1948-1974

Myanmar Army

Communist Party of Burma

Flag of Chinese Communist Party (Q17427)

(old version)

Karenni National People's Liberation Front

Burma Socialist Programme Party

New Mon State Party

Shan United Revolutionary Army

Switzerland (Civil Ensign)

Lausanne, Switzerland

Siam, 1782-1817 (State Ensign)

Siam, 1817-1855 (State Ensign)

Siam, 1855-1916

Siam, 1916-1917 (Civil Flag & Ensign)

Royal Thai Army Flag

Flag of the President of Austria

Skåne, Sweden

Confederación Perú-Boliviana

Flag of Baton Rouge

Finland, 1918 (State Ensign)

Soviet Union (1955–1991)

Soviet Union (1923–1955)

Lithuanian-Byelorussian SSR

Flag of Victory

Commemorative Flag

Red Army

Pavlodar 1922 batallion banner.

Turkey

Norman flag

Norman flags

Norman flag

Mayday demonstration in Santiago de Compostela

at Madrid

parade in León, Spain

Upon building on May 1st Berlin-Kreuzberg 2007

Flag of Baton Rouge

Spanish communist leader Francisco Frutos giving a speech

Mehmed II

Painting of barricade in Paris Comune revolts june 1848

Bolshevik by Boris Kustodiyev, 1920

Election poster by Carl Scherer, 1919