- RCMG Ghent
- RDIS Conseils
- Recherche en Prevision Numerique
- Recherche et Collections
- Recyclage et risque
- Red Sea Research Centre
- Rega Institute - VIB Center for the Biology of Disease, Department of Microbiology and Immunology, Bioinformatics and (eco-)systems Biology Laboratory, Louvain, Belgique
- Regional Security System [Barbados]
- Remote Sensing Group
- Remote Sensing Solutions
- Remote Sensing Systems [Santa Rosa]
- Renard Centre of Marine Geology (RCMG)
- Representation du Laos
- Research and Development Center for Global Change
- Research and Development Institute for Ornamental Fish Culture
- Research Center for Advanced Science and Technology [Tokyo]
- Research Center for Oceanographic and Biological Fishery Modelling (CIMOBP)
- Research Center for Oceanography
- Research Centre for Astronomy and Earth Sciences [Budapest]
- Research Group for Terrestrial Palaeoclimates
- Research Institute for Applied Mechanics
- Research Institute for Applied Mechanics [Fukuoka]
- Research Institute for Global Change
- Research Institute for Humanity and Nature
- Research Institute of Innovative Technology for the Earth
- Research Institute of Oceanography [Seoul]
- Research School of Earth Sciences and Centre of Excellence for Climate Extremes
- Research School of Earth Sciences [ANU, Canberra]
- Réseaux épuration et qualité des eaux
- Réserve Naturelle des Sept-Iles Station
- retraité
- Retraité
- Rheinische Friedrich-Wilhelms-Universität Bonn
- Rheinisch-Westfälische Technische Hochschule Aachen University
- Rhodes University, Grahamstown
- Rice University [Houston]
- Rijkswaterstaat [Delft]
- RiverLy - Fonctionnement des hydrosystèmes
- Romanian Bioresources Centre
- Romberg Tiburon Center
- Rosenstiel School of Marine and Atmospheric Science
- Rossby Centre, SMHI, Norrköping, 601 76, Sweden
- Royal Belgian Institute for Natural Sciences [Belgium]
- Royal Holloway [University of London]
- Royal Melbourne Institute of Technology University
- Royal Museum for Central Africa [Tervuren]
- Royal Netherlands Institute for Sea Research
- Royal Netherlands Meteorological Institute
- Royal Observatory of Belgium = Observatoire Royal de Belgique
- Rudjer Boskovic Institute [Zagreb]
- Ruhr University Bochum = Ruhr-Universität Bochum
- Rural Development Administration
- Russian Academy of Agricultural Sciences
- Russian Academy of Sciences [Moscow]
- Russian Federal Service for Hydrometeorology and Environmental Monitoring
- Russian State Hydrometeorological University [St.Petersburg]
- Rutgers, The State University of New Jersey [New Brunswick]
- Rutgers University System
- RWS RIJKSWATERSTAAT CENTRE FOR WATER MANAGEMENT LELYSTAD NLD