This article contains a list of flags of international organizations.

Global

• 
  Flag of the Community of Portuguese Language Countries
• 
  Flag of the Organisation internationale de la Francophonie
• 
  Flag of the Organisation of Islamic Cooperation
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  Flag of the United Nations
• 
  Flag of UNESCO
• 
  Flag of the Permanent Court of Arbitration
• 
  Flag of the World Trade Organization

Transcontinental

• 
  Flag of the Organisation of African, Caribbean and Pacific States
• 
  Flag of the Arab League
• 
  Flag of the Collective Security Treaty Organization
• 
  Flag of the Commonwealth of Independent States
• 
  Flag of the Eurasian Economic Union
• 
  Flag of the North Atlantic Treaty Organization
• 
  Flag of the South Atlantic Peace and Cooperation Zone

Africa

• 
  Flag of the African Union
• 
  Flag of the East African Community
• 
  Flag of the Southern African Development Community

Americas

• 
  Flag of the Andean Community
• 
  Flag of the Association of Caribbean States
• 
  Flag of the Bolivarian Alliance for the Peoples of Our America – Peoples' Trade Treaty
• 
  Flag of the Central American Integration System
• 
  Flag of the Caribbean Community
• 
  Flag of the Community of Latin American and Caribbean States
• 
  flag of the Latin American Parliament
• 
  Flag of Mercosur
• 
  Flag of the Organization of American States
• 
  Flag of the Union of South American Nations

Asia

• 
  Flag of the Gulf Cooperation Council
• 
  Flag of the Organization of Turkic States

Europe

• 
  Flag of Benelux
• 
  Flag of the Central European Free Trade Agreement
• 
  Flag of the Council of Europe
• 
  Flag of the European Free Trade Association
• 
  Flag of the European Political Community
• 
  Flag of the European Union
• 
  Flag of the Organization for Security and Co-operation in Europe
• 
  Flag of the Nordic Council

Oceania