List of flags by number of colors
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== 1 ==
== 2 ==
- Flag of Alabama
- Flag of Alaska
- Flag of Alphen aan den Rijn
- Anarcho-syndicalism flag
- Flag of Atlanta
- Flag of Austria
- Flag of Bahrain
- Flag of Bangladesh
- Flag of Brittany
- Cross of Burgundy
- The Bonnie Blue Flag
- Flag of Canada
- The checkered flag
- Flag of the People's Republic of China
- Flag of the Democratic Republic of the Congo
- Flag of Denmark
- Flag of England
- Esperanto flag
- Flag of Europe and the European Union
- Flag of Finland
- Flag of the canton of Fribourg
- Flag of Greece
- Flag of Greenland
- Flag of Honduras
- Flag of Hong Kong
- Flag of Indiana
- Flag of Indonesia
- Flag of Islamic Khilafah
- Flag of Israel
- Flag of Japan
- Flag of Jihad
- The Jolly Roger
- Flag of the canton of Jura
- Flag of Kazakhstan
- Flag of Kyrgyzstan
- Flag of Latvia
- Flag of Leiden
- Flag of the canton of Lucerne
- Flag of the Republic of Macedonia
- Flag of Mauritania
- Flag of Federated States of Micronesia
- Flag of Monaco
- Flag of Morocco
- Flag of New Mexico
- Flag of Nigeria
- Flag of Norfolk Island
- Flag of Oregon
- Flag of Pakistan
- Flag of Palau
- Flag of Paris
- Saint Piran's Flag (flag of Cornwell)
- Flag of Poland
- Flag of Qatar
- Flag of Quebec
- Flag of Saudi Arabia
- Flag of Scotland
- Flag of the canton of Schwyz
- Flag of Singapore
- Flag of the canton of Solothurn
- Flag of Spain (variant without coat of arms)
- Flag of Sweden
- Flag of Switzerland
- Flag of the canton of Ticino
- Flag of Tonga
- Flag of Tunisia
- Flag of Turkey
- Flag of Ukraine
- Flag of United Nations
- Flag of the canton of Valais
- Flag of Vietnam
- Flag of South Vietnam
- Flag of Washington, DC
- Flag of the canton of Zug
- Flag of the canton of Zurich
== 3 ==
See Tricolour
- Tricolore of France
- Flag of Australia
- Flag of Bahamas
- Flag of the canton of Berne
- Flag of Iceland
- Flag of Mongolia
- Flag of New Zealand
- Flag of Norway
- Flag of Russia
- Flag of the United Kingdom
- Flag of the United States
== 4 ==
- Flag of Brazil
- Flag of the canton of Glarus
- Flag of Liechtenstein
- Flag of India
- Flag of Papua New Guinea
- Flag of South Korea
== 5 ==
== 6 ==
- Flag of South Africa
- Rainbow flag - The current version
7
- Rainbow flag - The old version
8
- Rainbow flag - The first version, each color had its meaning