- Radboud University [Nijmegen]
- Radboud University Nijmegen, Institute for Molecules and Materials
- Radio and Space Plasma Physics Group [Leicester]
- RadioAstronomisches Institut [Bonn]
- Radio-club de Saint-Quentin-en-Yvelines F6KRK
- RAND Europe [Cambridge]
- Raytheon BBN Technologies
- Rdscientific [Newbury]
- Reaktor Space Lab
- REgional Model and geo-Hydrological Impacts
- Regional Security System [Barbados]
- Remote Sensing Laboratory [Barcelona]
- Remote Sensing Systems [Santa Rosa]
- Rensselaer Polytechnic Institute
- REOSC-safran
- Research and Education in eNergy, Environment and Water Institute
- Research and Information Center [Tokyo]
- Research and Information System for Developing Countries
- Research and Scientific Support Department, ESTEC
- Research and Technology Centre Westcoast
- Research Applications Laboratory [Boulder]
- Research Center for Advanced Science and Technology [Tokyo]
- Research Center for Astronomy and Applied Mathematics [Athens]
- Research Center for Environmental Changes [Taipei]
- Research Centre for Astronomy and Earth Sciences [Budapest]
- Research Centre for Atmospheric Physics and Climatology [Athens]
- Research Institute for Applied Mechanics [Fukuoka]
- Research Institute for Applied Mechanics, Kyushu University
- Research Institute for Geo-hydrological Protection [Perugia]
- Research Institute for Global Change
- Research Institute for Sustainable Humanosphere
- Research Institute of Geodesy, Cartography and Topography
- Research Institute on Mines and Environment
- Research On Carbon-rich Key Samples [IMPMC]
- Research on Healthcare Performance
- Research School of Astronomy and Astrophysics [Canberra]
- Research School of Earth Sciences [ANU, Canberra]
- Research School of Physics and Engineering [Canberra}
- Research Unit Analytical BioGeoChemistry
- Réseau nanophotonique et optique
- Réseau sur le stockage électrochimique de l'énergie
- Réseaux, Mobilité et Services
- RÉSEAUX, TÉLÉCOMMUNICATION ET SERVICES
- ReuniWatt
- Rheinische Friedrich-Wilhelms-Universität Bonn
- Rheinisches Institut für Umweltforschung
- Rhenish Institute for Environmental Research
- Ricardo Energy and Environment
- Ricerca sul Sistema Energetico
- Rice University [Houston]
- RIKEN Center for Computational Science [Kobe]
- RIKEN - Institute of Physical and Chemical Research [Japon]
- RIKEN Nishina Center for Accelerator-Based Science [Wako]
- Rikkyo University [Tokyo]
- RISE Bioscience and Materials|Chemistry and Materials
- RISE Research Institutes of Sweden
- Risø National Laboratory
- Risø National Laboratory for Sustainable Energy
- Risques
- Risques, Ecosystèmes, Vulnérabilité, Environnement, Résilience
- Ritter Astrophysical Research Center
- RiverLy - Fonctionnement des hydrosystèmes
- RMIT School of Mathematical and Geospatial Sciences
- Rochester Institute of Technology
- Rocket Lab USA
- Romanian Academy
- Röntgenanalytik Messtechnik GmbH
- Rosenstiel School of Marine and Atmospheric Science
- Rossby Centre, SMHI, Norrköping, 601 76, Sweden
- Rosseland Centre for Solar Physics
- Rotation de la Terre et géodésie spatiale
- Royal Belgian Institute for Space Aeronomy
- Royal Greenwich Observatory
- Royal Holloway [University of London]
- Royal Melbourne Institute of Technology University
- Royal Military College of Canada
- Royal Netherlands Institute for Sea Research
- Royal Netherlands Meteorological Institute
- Royal Observatory of Belgium = Observatoire Royal de Belgique
- RPG Radiometer Physics GmbH
- RT Solutions Inc.
- Ruhr University Bochum = Ruhr-Universität Bochum
- Russian Academy of Sciences [Moscow]
- Russian Federal Nuclear Center
- Russian Federal Service for Hydrometeorology and Environmental Monitoring
- Russian Federal Space Agency
- Russian Federation
- Russian State Hydrometeorological University [St.Petersburg]
- Rutgers, The State University of New Jersey [New Brunswick]
- Rutgers University [Newark]
- Rutgers University System