- IASMA Research and Innovation Centre
- IBM Research [Zurich]
- IBS Center for Climate Physics
- iCLIMATE Aarhus University Interdisciplinary Centre for Climate Change
- ICOS-ATC
- ICOS-RAMCES
- Identité et Différenciation de l’Espace, de l’Environnement et des Sociétés
- IDL-Faculdade de Ciencias da Universidade de Lisboa
- IFP Energies nouvelles
- Iinstitute of Environmental Protection - National Research Institute
- iLM - Atmosphère, Optique et Spectroscopie
- Image Processing Laboratory
- Imaging Sciences and Biomedical Engineering Division [London]
- IMCN|MOST Institute of Condensed Matter and Nanosciences, Molecules, Solids, Reactivity
- Imperial College London
- Imperial College of Science, Technology and Medicine
- IM Systems Group
- IMT Atlantique
- IMT - MINES ALES
- INAF - Osservatorio Astrofisico di Arcetri
- INAF - Osservatorio Astrofisico di Catania
- INAF - Osservatorio Astrofisico di Torino
- INAF - Osservatorio Astronomico di Bologna
- INAF - Osservatorio Astronomico di Brera
- INAF - Osservatorio Astronomico di Capodimonte
- INAF - Osservatorio Astronomico di Padova
- INAF - Osservatorio Astronomico di Palermo
- INAF - Osservatorio Astronomico di Roma
- INAF - Osservatorio Astronomico di Trieste
- INAT
- INAT Laboratoire Recherche-Développement Sciences et Technologie de l'Eau
- Indiana University
- Indiana University [Bloomington]
- Indiana University System
- Indian Institute of Astrophysics
- Indian Institute of Geomagnetism [Navi Mumbai, India]
- Indian Institute of Remote Sensing
- Indian Institute of Science Education and Research Kolbata
- Indian Institute of Science Education and Research Mohali
- Indian Institute of Space and Science Technology
- Indian Institute of Technology Indore
- Indian Institute of Technology Kanpur
- Indian Institute of Technology Kharagpur
- Indian Institute of Tropical Meteorology
- Indian Space Research Organisation
- Indonesian Meteorological, Climatologicall and Geophysical Agency
- Indonesian National Institute of Aeronautics and Space
- Information Engineering and Computer Science Department
- Information – Technologies – Analyse Environnementale – Procédés Agricoles
- Informus GmbH
- Infrared Processing and Analysis Center
- Infrastructures Informatiques Fiables, Responsables, et Décentralisées
- INL - Conception de Systèmes Hétérogènes
- InnoLas Laser
- InnoLas Laser GmbH
- Innovative Solutions In Space [Delft]
- Innovim LLC
- Innsbruck Medical University = Medizinische Universität Innsbruck
- INPAC-Institute for Nanoscale Physics and Chemistry
- Inria Bordeaux - Sud-Ouest
- Inria de Paris
- Inria Grenoble - Rhône-Alpes
- Inria Lille - Nord Europe
- Inria Lyon
- Inria Nancy - Grand Est
- Inria Paris-Rocquencourt
- Inria Rennes – Bretagne Atlantique
- Inria Siège
- INRP
- In-Service Aircraft for a Global Observing System
- INSTITUT AGRO Agrocampus Ouest
- Institut Agro Rennes Angers
- Institut Brestois des Sciences de l'Homme et de la Société
- Institut Brestois du Numérique et des Mathématiques
- Institut Charles Delaunay
- Institut d'Astronomie et d'Astrophysique [Bruxelles]
- Institut d'Astronomie et de Géophysique Georges Lemaître
- Institut d'Astrophysique de Paris
- Institut d'Astrophysique et de Géophysique [Liège]
- Institut d'astrophysique spatiale
- Institut de Chimie - CNRS Chimie
- Institut de Chimie de la Matière Condensée de Bordeaux
- Institut de Chimie de Nice
- Institut de chimie des milieux et matériaux de Poitiers [UMR 7285]
- Institut de Chimie des Substances Naturelles
- Institut de Chimie de Strasbourg
- Institut de Chimie et des Matériaux Paris-Est
- Institut de chimie et procédés pour l'énergie, l'environnement et la santé
- Institut de Chimie Organique et Analytique
- Institut de Chimie Organique Fine
- Institut de Chimie Physique
- Institut de Ciencies del Cosmos
- Institut de Ciencies de l'Espai [Barcelona]
- Institut d'écologie et des sciences de l'environnement de Paris
- Institut de Combustion, Aérothermique, Réactivité et Environnement
- Institut de Géographie et d'Aménagement Régional de l'Université de Nantes
- Institut de la matière condensée et des nanosciences | Institute of Condensed Matter and Nanosciences
- Institut de la Mer de Villefranche
- Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
- Institut d'Electronique du Solide et des Systèmes
- Institut d'Électronique et des Technologies du numéRique
- Institut d'électronique fondamentale
- Institut de l'Environnement et Recherches Agricoles [Ouagadougou]
- Institut de l'information scientifique et technique
- Institut de Mécanique Céleste et de Calcul des Ephémérides
- Institut de mécanique des fluides de Toulouse
- Institut de minéralogie, de physique des matériaux et de cosmochimie
- Institut de Physique de Rennes
- Institut de Physique du Globe de Paris
- Institut de physique du globe de Strasbourg
- Institut de Physique Nucléaire d'Orsay
- Institut de Planétologie et d'Astrophysique de Grenoble
- Institut de RadioAstronomie Millimétrique
- Institut de Radioprotection et de Sûreté Nucléaire
- Institut de recherche en astrophysique et planétologie
- Institut de Recherche en Horticulture et Semences
- Institut de Recherche en Informatique et Systèmes Aléatoires
- Institut de Recherche Interdisciplinaire Homme et Société
- Institut de Recherche pour le Développement
- Institut de recherche pour le développement [IRD] : UMR237
- Institut de recherche pour le développement [IRD] : UR206
- Institut de recherche pour le développement [IRD] : UR219
- Institut de recherches sur la catalyse et l'environnement de Lyon
- Institut de Recherches sur les lois Fondamentales de l'Univers
- Institut de Recherche sur les Matériaux Avancés
- Institut de Recherche sur les Phénomènes Hors Equilibre
- Institut des Biomolécules Max Mousseron [Pôle Chimie Balard]
- Institut de Science des Matériaux de Mulhouse
- Institut des Géosciences de l’Environnement
- Institut des Matériaux, de Microélectronique et des Nanosciences de Provence
- Institut des matériaux de Paris-Centre
- Institut des Nanosciences de Paris
- Institut des Nanotechnologies de Lyon
- Institut des Sciences Analytiques
- Institut des Sciences Appliquées et de la Simulation pour les énergies bas carbone
- Institut des Sciences de la Mécanique et Applications Industrielles
- Institut des Sciences de la MER de Rimouski
- Institut des Sciences de la Terre
- Institut des Sciences de la Terre de Paris
- Institut des Sciences de la Terre d'Orléans - UMR7327
- Institut des sciences de la terre [Lausanne]
- Institut des Sciences de l'Ingénierie et des Systèmes - CNRS Ingénierie
- Institut des Sciences Moléculaires
- Institut des Sciences Moléculaires de Marseille
- Institut des Sciences Moléculaires d'Orsay
- Institut des Systèmes Intelligents et de Robotique
- Institut de Statistique, Biostatistique et Sciences Actuarielles (ISBA)
- Institut d'Estudis Espacials de Catalunya
- Institut de Systématique, Evolution, Biodiversité
- Institut d'Optique Graduate School
- Institute for Advanced Studies in Basic Sciences
- Institute for Advanced Sustainability Studies [Potsdam]
- Institute for Aerospace Research [Ottawa]
- Institute for Aerospace Studies
- Institute for Algorithms and Scientific Computing
- Institute for Applied and Physical Chemistry [Bremen]
- Institute for Applied Environmental Research [Stockholm]
- Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing [Penteli]
- Institute for Astronomy [Edinburgh]
- Institute for Astronomy [Honolulu]
- Institute for Astronomy [Vienna]
- Institute for Astrophysics and Computational Sciences [Washington]
- Institute for Atmospheric and Climate Science [Zürich]
- Institute for Atmospheric and Earth System Research
- Institute for Atmospheric and Environmental Research [Wuppertal]
- Institute for Atmospheric and Environmental Sciences [Frankfurt|Main]
- Institute for Atmospheric Physics [Mainz]
- Institute for Atmospheric Science [Leeds]
- Institute for Basic Science [Daejeon]
- Institute for chemistry and dynamics of the Geoshere- 2: Troposphere
- Institute for Climate and Atmospheric Science [Leeds]
- Institute for Climate and Global Change Research [Nanjing]
- Institute for Computational Cosmology
- Institute for Computational Science [Zürich]
- Institute for Data Processing and Electronics
- Institute for Dynamics of Geospheres [Moscow]
- Institute for Earth Observation [Bolzano]
- Institute for Energy and Climate Research
- Institute for Environmental Decisions [ETH Zürich]
- Institute for Environmental Research and Sustainable Development
- Institute for Environmental Sciences [Geneva]
- Institute for experimental physics II
- Institute for Geophysics and Meteorology [Köln]
- Institute for Geophysics, Astrophysics and Meteorology [Graz]
- Institute for High-Frequency Technique [Bochum]
- Institute for Marine and Atmospheric Research [Utrecht]
- Institute for Mathematics Applied to Geoscience
- Institute for Mathematics, Astrophysics and Particle Physics
- Institute for Meteorology and Climate Research
- Institute for Meteorology and Climatology [Vienna]
- Institute for Modeling Plasma, Atmospheres and Cosmic Dust
- Institute for Multiscale Simulation
- Institute for Particle Physics and Astrophysics [ETH Zürich]
- institute for Problems in Mechanics [Moscow]
- Institute for Scientific Research of Aerospace Monitoring
- Institute for Space-Earth Environmental Research [Nagoya]
- Institute for Space Studies of Catalonia [Barcelona]
- Institute for Theoretical Astrophysics [Heidelberg]
- Institute for the Protection of Maritime Infrastructures
- Institute for the Study of Earth, Oceans, and Space [Durham]
- Institute of Advanced Science and Technology
- Institute of aging, Udall Parkinson's research center
- Institute of Agricultural and Environmental Sciences
- Institute of Agriculture and Tourism
- Institute of Applied Physics [Bern]
- Institute of Applied Physics [Moldavie]
- Institute of Applied Physics "Nello Carrara"
- Institute of Applied Physics of RAS
- Institute of Arctic Alpine Research [University of Colorado Boulder]
- Institute of Arts and Sciences [Yamagata]
- Institute of Astro- and Particle Physics [Innsbruck]
- Institute of Astronomy
- Institute of Astronomy [ETH Zürich]
- Institute of Astronomy, Geophysics and Atmospheric Sciences
- Institute of Astronomy [Kharkiv]
- Institute of Astronomy [Leuven]
- Institute of Astronomy of the Bulgarian Academy of Sciences
- Institute of Astronomy of the Russian Academy of Sciences
- Institute of Astronomy [Prague]
- Institute of Astronomy [Sofia]
- Institute of Astronomy [Taiwan]
- Institute of Astrophysics of the National Academy of Sciences of Tajikistan
- Institute of Atmosphere and Environment
- Institute of Atmospheric Physics
- Institute of Atmospheric Physics [Beijing]
- Institute of Atmospheric Physics of the Czech Academy of Sciences
- Institute of Atmospheric Pollution Research
- Institute of Basic Science
- Institute of Bio- and Geosciences [Jülich]
- Institute of Building Climatology
- Institute of Chemical Engineering and High Temperature Chemical Processes,
- Institute of Chemical Engineering Sciences - Hellas [Crete]
- Institute of Chemical Kinetics and Combustion
- Institute of Chemical Physics
- Institute of Chemical Process Fundamentals
- Institute of Chemical Sciences
- Institute of communications and wave propagation [Graz]
- Institute of Computational Modelling of the Russian Academy of Sciences
- Institute of Computer and Network Engineering [Braunschweig]
- Institute of Condensed Matter and Nanosciences
- Institute of Crop Science and Resource Conservation [Bonn]
- Institute of Crustal Dynamics [Beijing]
- Institute of Earth Physics and Space Science [Sopron]
- Institute of Earthquake Science [Beijing]
- Institute of Earth Sciences [Reykjavik]
- Institute of Electronics [Sofia]
- Institute of Environmental Physics [Bremen]
- Institute of Environmental Physics [Heidelberg]
- Institute of Environmental Sciences| Instituto de Ciencias Medioambientales de Toledo
- Institute of Environmental Sciences [Leiden]
- Institute of Environmental Technology [Hanoi]
- Institute of Experimental and Applied Physics [Kiel]
- Institute of Experimental Meteorology
- Institute of Experimental Physics [Graz]
- Institute of Experimental Physics SAS
- Institute of Forestry and Rural Engineering
- Institute of Geochemistry and Petrology [ETH Zürich]
- Institute of Geochemistry [Guiyang]
- Institute of Geodesy and Geophysics [Wuhan]
- Institute of Geodesy and Photogrammetry [Zürich]
- Institute of Geodesy [Graz]
- Institute of Geodynamics [Bucharest]
- Institute of Geodynamics of the Romanian Academy
- Institute of Geography and Earth Sciences [Budapest]
- Institute of Geography [Bern]
- Institute of Geological Sciences [Berlin]
- Institute of Geological Sciences [Bern]
- Institute of Geology and Geophysics [Beijing]
- Institute of Geology of the Czech Academy of Sciences
- Institute of Geology [Poznan]
- Institute of Geophysics and Planetary Physics [Los Angeles]
- Institute of Geophysics [Austin]
- Institute of Geophysics [ETH Zürich]
- Institute of Geophysics [Hanoi]
- Institute of Geophysics of the Czech Academy of Sciences
- Institute of Geophysics, University of Warsaw
- Institute of Geophysics [Warsaw]
- Institute of High Pressure Physics [Warsaw]
- Institute of Industrial Science [Tokyo]
- Institute of Informatics of the Slovak Academy of Sciences
- Institute of Information Sciences and Electronics
- Institute of Information Theory and Automation of the Czech Academy of Sciences
- Institute of Laser Physics of SB RAS
- Institute of Life, Earth and Environment [Namur]
- Institute of Low Temperature Science [Sapporo]
- Institute of Marine Affairs
- Institute of Marine Research [Bergen]
- Institute of Marine Sciences [Erdemli-Mersin]
- Institute of Marine Sciences | Institut de Ciències del Mar [Barcelona]
- Institute of Materials and Processes [Edinburgh]
- Institute of Mathematical and Physical Sciences [Aberystwyth]
- Institute of Meteorology and Climate Research
- Institute of Meteorology and Geophysics [Innsbruck]
- Institute of Meteorology and Water Management
- Institute of Meteorology and Water Management - National Research Institute
- Institute of Methodologies for Environmental Analysis of the National Research Council [Italy]
- Institute of Nature and Environmental [Kanazawa]
- Institute of Networked Energy Systems
- Institute of Nuclear and Radiological Sciences and Technology, Energy and Safety
- Institute of Numerical Mathematics [Moscou]
- Institute of Oceanology, Polish Academy of Sciences
- Institute of Ocean Sciences [Sidney]
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences
- Institute of Parallel Processing-BAS
- Institute of Photogrammetry and Remote Sensing
- Institute of Physics and Meteorology [Stuttgart]
- Institute of Physics [Belgrade]
- Institute of Physics [Graz]
- Institute of Physics [Hanoi]
- Institute of Physics [Kazan]
- Institute of Physics [Szczecin]
- Institute of Physics [Taipei]
- Institute of Polar Sciences [Venezia-Mestre]
- Institute of Psychiatry, Psychology & Neuroscience, King's College London
- Institute of Radio Astronomy of NAS of Ukraine
- Institute of Radio Frequency Engineering and Electronics [Karlsruhe]
- Institute of Remote Sensing and Geographic Information System
- Institute of Science and Engineering [Kanazawa]
- Institute of Seismology
- Institute of Space and Astronautical Science
- Institute of Space and Atmospheric Studies [Saskatoon]
- Institute of Space Physics and Applied Technology [Beijing]
- Institute of Space Science [Bucharest-Măgurele]
- Institute of Space Sciences [Barcelona]
- Institute of Space Science [Taiwan]
- Institute of Surface-Earth System Science of Tianjin University
- Institute of Theoretical Astrophysics [Oslo]
- Institut Fédéral de Recherches
- Institut Fédéral de Recherches sur la Forêt, la Neige et le Paysage
- Institut for Analysis and Algebra
- Institut Français de Recherche pour l'Exploitation de la Mer
- Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux
- Institut FRESNEL
- Institut für Angewandte Geowissenschaften [Darmstadt]
- Institut für angewandte Physik [Bern]
- Institut für Angewandte und Physikalische Chemie
- Institut für Astronomie und Astrophysik [Tübingen]
- Institut für Astrophysik [Göttingen]
- Institut für Astrophysik [Wien]
- Institut für Atmosphäre und Klima [Zürich]
- Institut für Atmosphäre und Umwelt [Frankfurt|Main]
- Institut für Atom- und Molekülphysik
- Institut für Chemie [TUB Berlin]
- Institut für Chemie und Dynamik der Geosphäre - Stratosphäre
- Institut für Chemie und Dynamik der Geosphäre - Troposphäre
- Institut für Datentechnik und Kommunikationsnetze
- Institut fur Datenverarbeitung
- Institut für Energie- und Klimaforschung - Stratosphäre
- Institut für Energie- und Klimaforschung - Troposphäre
- Institut für Experimentelle und Angewandte Physik [Kiel]
- Institut für Fernerkundung [Bremen]
- Institut für Geodäsie und Geoinformationstechnik
- Institut für Geographie [Augsburg]
- Institut für Geographie [Erlanger]
- Institut für Geographie [Giessen]
- Institut für Geologie [Bern]
- Institut für Geologische Wissenschaften [Berlin]
- Institut für Geophysik [Hamburg]
- Institut für Geophysik und Extraterrestrische Physik [Braunschweig]
- Institut für Geophysik und Meteorologie [Köln]
- Institut für Geophysik [Zürich]
- Institut für Geowissenschaften [Heidelberg]
- Institut für Informatik [Würzburg]
- Institut für Ionenphysik und Angewandte Physik - Institute for Ion Physics and Applied Physics [Innsbruck]
- Institut für Kernphysik
- Institut für Küstenforschung | Institute of Coastal Research
- Institut für Mathematik [Potsdam]
- Institut für Meereskunde [Hamburg]
- Institut für Meteorologie [Berlin]
- Institut für Meteorologie und Geophysik [Wien]
- Institut für Meteorologie und Klimaforschung - Atmosphärische Aerosol Forschung
- Institut für Meteorologie und Klimaforschung - Atmosphärische Spurengase und Fernerkundung
- Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung
- Institut für Meteorologie und Klimaforschung - Troposphärenforschung
- Institut für Meteorologie und Klimatologie [Hannover]
- Institut für Nachrichtentechnik [Dresden]
- Institut für Optische Sensorsysteme
- Institut für Ozeanographie
- Institut für Photogrammetrie und Fernerkundung
- Institut für Physikalische Biologie [Düsseldorfd]
- Institut für Physik der Atmosphäre [Mainz]
- Institut für Physik [Greifswald]
- Institut für Physik [Mainz]
- Institut für Physik und Astrophysik [Potsdam]
- Institut für Physik und Meteorologie [Stuttgart]
- Institut für Planetare Geodäsie, Lohrmann-Observatorium
- Institut für Planetologie [Münster]
- Institut für Raumfahrtsysteme
- Institut für Raumfahrttechnik
- Institut für Sensor- und Aktuatorsysteme
- Institut für Technische Physik [Kassel]
- Institut für Technologie in der Architektur [Zürich]
- Institut für Theoretische Physik [Braunschweig]
- Institut für Theoretische Physik IV [Bochum]
- Institut für Umweltphysik [Bremen]
- Institut für Umweltphysik [Heidelberg]
- Institut für Weltraumforschung = Space Research institute [Graz]
- Institut für Weltraumwissenschaften [Berlin]
- Institut für Werkzeugmaschinen und Fabrikbetrieb
- Institut Galilée
- Institut géographique national [IGN]
- Institut Jean Lamour
- Institut Jean Le Rond d'Alembert
- Institut Lafayette
- Institut Langevin - Ondes et Images (UMR7587)
- Institut Lavoisier de Versailles
- Institut Lumière Matière [Villeurbanne]
- Institut méditerranéen de biodiversité et d'écologie marine et continentale
- Institut méditerranéen d'océanologie
- Institut Mediterrani d'Estudis Avancats = Instituto Mediterráneo de Estudios Avanzados
- Institut Mines-Télécom [Paris]
- Institut National de la Recherche Agronomique
- Institut National de la Recherche Scientifique [Québec]
- Institut National de la Santé et de la Recherche Médicale
- Institut National de l'Environnement Industriel et des Risques
- Institut National de l'Information Géographique et Forestière [IGN]
- Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement
- Institut National de Physique Nucléaire et de Physique des Particules du CNRS
- Institut National de Recherche en Informatique et en Automatique
- Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture
- Institut National de Recherche Pédagogique - La main à la pâte
- Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement
- Institut national de recherches archéologiques préventives
- Institut National des Sciences Appliquées
- Institut National des Sciences Appliquées de Lyon
- Institut National des Sciences Appliquées - Rennes
- Institut national des sciences appliquées Rouen Normandie
- Institut National des Sciences Appliquées - Strasbourg
- Institut national des sciences de l'Univers
- Institut National des Sciences et Techniques Nucléaires
- Institut National des Sciences et Technologies de la Mer [Salammbô]
- Institut National des Sciences Mathématiques et de leurs Interactions - CNRS Mathématiques
- Institut national d’études supérieures agronomiques de Montpellier
- Institut National Polytechnique de Grenoble
- Institut National Polytechnique (Toulouse)
- Institut Néel
- Institut Normand de Chimie Moléculaire Médicinale et Macromoléculaire
- Instituto Andaluz de Ciencias de la Tierra
- Institut océanographique Bedford - Bedford Oceanographic Institute [Dartmouth, Canada]
- Instituto de Astrofísica de Andalucía
- Instituto de Astrofisica de Canarias
- Instituto de Astrofísica e Ciências do Espaço
- Instituto de Astrofísica e Ciências do Espaço [Lisboa]
- Instituto de Astronomia [Antofagasta]
- Instituto de Astronomia, Geofísica e Ciências Atmosféricas [São Paulo]
- Instituto de Astronomía y Física del Espacio [Buenos Aires]
- Instituto de Cerámica y Vidrio
- Instituto de Ciencias Ambientales [Toledo]
- Instituto de Ciencias Biomédicas [Santiago]
- Instituto de Ciencias de la Atmósfera y Cambio Climático
- Instituto de Ciencias del Mar de Barcelona
- Instituto de Ciencias Nucleares [Mexico]
- Instituto de Ciencias Nucleares, UNAM
- Instituto de Ciencias Polares, Ambiente y Recursos Naturales
- Instituto de Estructura de la Materia
- Instituto de Fisica da Universidade de São Paulo
- Instituto de Física de Buenos Aires
- Instituto de Física de Cantabria
- Instituto de Fisica y Astronomia [Valparaiso]
- Instituto de Geociencias
- Instituto de Geociencias [Madrid]
- Instituto de Geofisica [Mexico]
- Instituto de Investigaciones Científicas y Técnicas para la Defensa
- Instituto de Investigaciones Energticas y Aplicaciones Industriales
- Instituto de Investigaciones Oceanológicas
- Instituto de Microelectrónica de Sevilla
- Instituto de Pesquisas Energéticas e Nucleares [São Paulo]
- Instituto de Pesquisas Meteorológicas
- Instituto de Plasmas e Fusão Nuclear [Lisboa]
- Instituto de Química Física Rocasolano
- Instituto de RadioAstronomía Milimétrica
- Instituto de Recursos Naturais [Itajubá]
- Instituto Dom Luiz
- Instituto Federal de Educação, Ciência e Tecnologia de São Paulo
- Instituto Franco-Argentino sobre Estudios de Clima y sus Impactos [Buenos Aires]
- Instituto Geofísico del Perú
- Instituto Geológico Minero y Metalúrgico
- Instituto Interuniversitario de Investigacion del Sistema Tierra en Andalucia
- Instituto Mauá de Tecnologia
- Instituto Nacional de Ecología y Cambio Climático
- Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria = National Institute for Agricultural and Food Research and Technology
- Instituto Nacional de Pesquisas Espaciais
- Instituto Nacional de Técnica Aeroespacial
- Instituto Politecnico Nacional [Mexico]
- Instituto Português de Investigação do Mar e da Atmosfera
- Instituto Superior of Engenharia de Lisboa
- Instituto Superior Técnico
- Instituto Universitario de Microgravedad "Ignacio Da Riva"
- Institut Paris Région
- Institut Pasteur de Lille
- Institut Pierre-Simon-Laplace
- Institut Polytechnique de Bordeaux
- Institut polytechnique de Grenoble - Grenoble Institute of Technology
- Institut Polytechnique de Paris
- Institut Polytechnique des Sciences Avancées
- Institut Pythéas
- Institut Rayonnement Matière de Saclay (DRF)
- Institut Royal Météorologique de Belgique [Bruxelles] - Royal Meteorological Institute of Belgium
- Institut Sciences de l'Homme et de la Société
- Institut Supérieur de l'Aéronautique et de l'Espace
- Institut supérieur de l'électronique et du numérique (ISEN)
- Institut Supérieur de l'Electronique et du Numérique - Lille
- Institut Supérieur des Sciences et Technologies de l’Energie de Gafsa
- Institut Teknologi Bandung
- Institut Terre Environnement Strasbourg
- Institut Trottier de Recherche sur les Exoplanètes
- Institut universitaire de France
- Institut Universitaire de Technologie - Paul Sabatier
- Institut Universitaire Européen de la Mer
- Institut Villebon – Georges Charpak
- Instituut voor Sterrenkunde [Leuven]
- Instrumentation, Moyens analytiques, Observatoires en Géophysique et Océanographie
- INSU Division Technique de l'INSU [Site de Brest]
- INTA Departamento de Observación de la Tierra
- Intelligent Optics and Photonics Research Center, Jiaxing Key Laboratory of Photonic Sensing and Intelligent Imaging
- Interaction avec l'Humain
- interaction Clouds Aerosols Radiations - ICARE|AERIS Data and Services Center - UMS 2877
- Interactions Aérosols Rayonnement
- Interactions et dynamique des environnements de surface
- Interactions et Processus au sein de la couche de Surface Océanique
- Interactions Rayonnement Nuages
- Interactions Sol Plante Atmosphère
- Interdepartmental Center for Crystallography
- Interdisciplinary Aerodynamic Group
- Interdisciplinary Centre for Security, Reliability and Trust
- Interdisciplinary Centre of Marine and Environmental Research [Matosinhos, Portugal]
- Interfaces, Traitements, Organisation et Dynamique des Systèmes
- Interfacultary Center for Marine Research
- International Arctic Research Center
- International Atomic Energy Agency - Environment Laboratories Monaco
- International Atomic Energy Agency [Vienna]
- International Center for Space Weather Science and Education [Fukuoka]
- International Centre for Quantum and Molecular Structures [Shanghai]
- International Institute for Applied Systems Analysis [Laxenburg]
- International Meteor Organization
- International Methane Emissions Observatory
- International Occultation Timing Association
- International Occultation Timing Association European Section
- International Research Institute for Climate and Society
- International Research School of Planetary Sciences [Pescara]
- International Space Science Institute [Bern]
- International Space University
- Inter-University Centre for Astronomy and Astrophysics [Pune]
- INVENT GmbH
- IONA College [New Rochelle]
- Ionicon Analytik GmbH
- Iowa State University
- IPGP POLE FORMATER PARIS FRA
- I. Physikalisches Institut [Göttingen]
- I. Physikalisches Institut [Köln]
- IRD, Centre Niamey, Niger
- Irish Centre for Research in Applied Geosciences [UCD]
- Irish Environmental Protection Agency
- Irish Meteorological Service
- Irkutsk State University
- isardSAT
- Ishigakijima Astronomical Observatory
- Israël Ministry of Environmental Protection
- Istanbul Technical University
- Istituti di Ricovero e Cura a Carattere Scientifico
- Istituto Agrario di San Michele All'Adige
- Istituto di Astrofisica e Planetologia Spaziali - INAF
- Istituto di Astrofisica Spaziale e Fisica cosmica - Bologna
- Istituto di Astrofisica Spaziale e Fisica Cosmica - Milano
- Istituto di Astrofisica Spaziale e Fisica cosmica - Roma
- Istituto di Biometeorologia [Roma]
- Istituto di Elettronica e di Ingegneria dell'Informazione e delle Telecomunicazioni
- Istituto di Fisica Applicata "Nello Carrara"
- Istituto di Fisica dello Spazio Interplanetario
- Istituto di Metodologie per l'Analisi Ambientale
- Istituto di Radioastronomia [Bologna]
- Istituto di Ricerca per la Protezione Idrogeologica [Padova]
- Istituto di Ricerca per la Protezione Idrogeologica [Perugia]
- Istituto di Ricerche per la Protezione Idrogeologica
- Istituto di Science Marine
- Istituto di Scienze Chimiche “F. Bruner”
- Istituto di Scienze dell'Atmosfera e del Clima
- Istituto di Scienze dell'Atmosfera e del Clima [Bologna]
- Istituto di Scienze dell'Atmosfera e del Clima [Lecce]
- Istituto di Scienze dell'Atmosfera e del Clima [Roma]
- Istituto di Scienze dell'Atmosfera e Del Clima [Torino]
- Istituto di Scienze Marine [La Spezia]
- Istituto di Scienze Polari | Institute of Polar Sciences [Bologna]
- Istituto di Struttura della Materia
- Istituto Nazionale di Astrofisica
- Istituto Nazionale di Fisica Nucleare
- Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
- Istituto Nazionale di Fisica Nucleare, Sezione di Milano
- Istituto Nazionale di Fisica Nucleare, Sezione di Padova
- Istituto Nazionale di Fisica Nucleare [Sezione di Roma 1]
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tor Vergata
- Istituto Nazionale di Geofisica e Vulcanologia
- Istituto Nazionale di Geofisica e Vulcanologia - Sezione di Bologna
- Istituto Nazionale di Geofisica e Vulcanologia - Sezione di Catania
- Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Pisa
- Istituto Nazionale di Geofisica e Vulcanologia - Sezione di Roma
- Istituto Nazionale di Ottica
- Istituto Nazionale di Ottica [Firenze]
- Istituto per il Rilevamento Elettromagnetico dell'Ambiente
- Istituto per la Scienza e la Tecnologia dei Plasmi
- Istituto per le Applicazioni del Calcolo [Bari]
- Istituto per le Applicazioni del Calcolo "Mauro Picone"
- Istituto sull’Inquinamento Atmosferico = Institute of Atmospheric pollution Research
- Istituto Superconduttori, Materiali Innovativi e Dispositivi
- Istituto Universitario di Studi Superiori
- Italian Civil Protection
- Italian National agency for new technologies, Energy and sustainable economic development [Frascati]
- Italian Space Agency
- IT University of Copenhagen
- IUT d'Allier
- IUT de Mantes
- Izaña Atmospheric Research Center