• Organization for Security and Co-operation in Europe (OSCE)
  • Organization of the Petroleum Exporting Countries (OPEC)
  • OPEC Fund for International Development (OFID)
  • Wassenaar Agreement (WA)
  • International Centre for Migration Policy Development (ICMPD)
  • Joint Vienna Institute (JVI)
  • International Narcotics Control Board (INCB)
  • International Anti-Corruption Academy (IACA)
  • King Abdullah International Centre for Interreligious and Intercultural Dialogue (KAICIID)
  • International Organisation for Migration (IOM)
  • International Bank for Reconstruction and Development (IBRD)

European Institutions

  • European Union Agency for Fundamental Rights (FRA)
  • European Patent Office (EPA)
  • European Council Liaison Office
  • European Investment Bank (EIB)



Institutions with a Special Status

  • International Institute for Applied Systems Analysis (IIASA)
  • International Institute for Peace (IIPA)
  • International Press Institute (IPI)
  • Vienna Institute for Development and Co-operation (VIDC)

Selected NGOs

  • International Union of Forestry Research Organization (IUFRO)
  • International Organization of Supreme Audit Institutions (INTOSAI)
  • International Association for Cereal Science and Technology (ICC)
  • International Conference of Historians of Labour and Social History (ITH)
  • International Federation of Automatic Control (IFAC)
  • The Academic Council on the United Nations System (ACUNS)
  • International Progress Organization (IPO)
  • International Union of Socialist Youth (IUSY)
  • International Federation for Information Processing (IFIP)
  • International Council on National Youth Policy (ICNYP)