Our Members

ICSU currently has 30 Scientific Union Members and 122 National Scientific Members covering 142 countries. In addition, ICSU has 22 International Scientific Associates.

There are two categories of full Members: National Members and International Scientific Unions.


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IAHR, International Association for Hydro-Environment Engineering and ResearchIASC, International Arctic Science CommitteeIAU, International Astronomical UnionICA, International Cartographic AssociationICA, International Commission for AcousticsICIAM, International Council for Industrial and Applied MathematicsICLAS, International Council for Laboratory Animal ScienceICO, International Commission for OpticsICSTI, International Council for Scientific and Technical InformationIFIP, International Federation for Information ProcessingIFLA, International Federation of Library Associations and InstitutionsIFS, International Foundation for ScienceIFSM, International Federation of Societies for MicroscopyIGU, International Geographical UnionIIASA, International Institute for Applied System AnalysisIMU, International Mathematical UnionIndia, Indian National Science AcademyIndonesia, Indonesian Institute of Sciences (LIPI)INQUA, INternational Union for QUAternary ResearchIran Islamic Rep. Of, University of TehranIraq, Ministry of Science and TechnologyIreland, Royal Irish AcademyISA, International Sociological AssociationISDE, International Society for Digital EarthISPRS, International Society for Photogrammetry and Remote SensingIsrael, Israel Academy of Sciences and HumanitiesItaly, Consiglio Nazionale delle RicercheIUAES, International Union of Anthropological and Ethnological SciencesIUBS, International Union of Biological SciencesIUCr, International Union of CrystallographyIUFoST, International Union of Food Science and TechnologyIUFRO, International Union of Forest Research OrganizationsIUGG, International Union of Geodesy and GeophysicsIUGS, International Union of Geological SciencesIUHPST, The International Union for History and Philosophy of Science and TechnologyIUIS, International Union of Immunological SocietiesIUMRS, International Union of Materials Research SocietiesIUMS, International Union of Microbiological SocietiesIUNS, International Union of Nutritional SciencesIUPAB, International Union for Pure and Applied BiophysicsIUPAC, International Union of Pure and Applied ChemistryIUPAP, International Union of Pure and Applied PhysicsIUPESM, International Union for Physical and Engineering Sciences in MedicineIUPHAR, International Union of Basic and Clinical PharmacologyIUPS, International Union of Physiological SciencesIUPsyS, International Union of Psychological ScienceIUSS, International Union of Soil SciencesIUTAM, International Union of Theoretical and Applied MechanicsIUTOX, International Union of ToxicologyIUVSTA, International Union for Vacuum Science, Technique and ApplicationsIWA, International Water Association