International Palaeontological Association (IPA)

 International Civil Service Commission (ICSC)

 Federation of International Civil Servants Associations (FICSA)

 International Association of Ports and Harbours (IAPH)

 International Women Society

 International Alliance of Women (IAW)

 International Radiation Protection Association (IRPA)

 International Textile Institute (ITI)

 International Association of Legal Science (IALS)

 International Commission of Jurists (ICJ)

 International Law Association

 International Union of Judges

 International Union for Child Welfare (IUCW)

 International Bureau of Weight and Measurements (IBWM)

 International Association of Independent Tanker Owners (INTERTANKO)

 International Permafrost Association (IPA)

 International Union of Geological Sciences (IUGS)

 International Geological Congress (IGC)

 International Seismological Centre (ISC)

 International Geographical Union (IGU)