An international organization is an organization, made of several member states, devoted to working on a certain common cause.
International organizations in Vexillium include:
- Anti-Terrorist Organization (ATO)
- Assembly for Peace in the Western Hemisphere (APWH)
- Association of Neutral Nations on Vexillium (ANNV)
- Central Longerath Union (CLU)
- Council of the Isles of the Meridic Ocean (CIMO)
- Crown Alliance
- Cruisanan Commonwealth
- Fiarrian League of Independent Nations and Territories (FLINT)
- Free Confederate Community (FCC)
- Geographic Society of Vexillium
- Glaciaria Convention
- Greater Malvadorias Union (GMU)
- International Amnesty
- International Trade Council of Vexillium (ITCV)
- International Vexilliadic Committee (IVC)
- International Vexillium Football Association (IVEFA)
- La Sainte Alliance
- League of Old Continent Nations (LOCN)
- Medhinou Pact
- Melanian Sea Treaty Organization (MESTO)
- Meritéan Union
- Nations Against Terrorism Act bloc (NATA)
- Ngwangwan Organisation for National Succession, Economic Normalisation and Security (NONSENS)
- Organization for Mutual Aid and Cooperation (OMAC)
- Smalik Treaty Organisation for Industrious Cooperation (STOIC)
- Society Of Airship Running States And Companies (SOAR)
- Svartic Commonwealth Organisation (SCO)
- The United Nations of Vexillium (UNV) and its associated organisations, such as:
- United Nations of Vexillium Aviation Convention (UNVAC)
- United Nations of Vexillium Committee on Collapsed Nations (UNVCOCN)
- United Nations of Vexillium Historical Accuracy Commission (UNVHAC)
- United Nations of Vexillium Telecommunication Union (UNVTO)
- United Nations of Vexillium Coding Conference (UNVCC)
- Weapons Limitation Treaty (WLT)
- Web Presence League (WPL)