- RadioAstronomisches Institut [Bonn]
- Radio Atmospheric Science Center [Kyoto]
- Radio Science Center for Space and Atmosphere [Kyoto]
- RAMS-CON Management Consultants
- Recherche en Prevision Numerique
- Remote Sensing Department [Bremen]
- Remote Sensing Laboratory [Barcelona]
- Research and Scientific Support Department, ESTEC
- Research Associate with the F.N.R.S
- Research Center for Advanced Science and Technology [Tokyo]
- Research Data Systems Corporation [Greenbelt]
- Research Institute for Built and Human Environment [Salford]
- Research Institute for Sustainable Humanosphere
- Research School of Earth Sciences [London]
- Rheinische Friedrich-Wilhelms-Universität Bonn
- Rheinisches Institut für Umweltforschung
- Rhenish Institute for Environmental Research
- Rice University [Houston]
- Risø National Laboratory
- Ritter Astrophysical Research Center
- Röntgenanalytik Messtechnik GmbH
- Rosenstiel School of Marine and Atmospheric Science
- Royal Holloway [University of London]
- Royal Netherlands Meteorological Institute
- Royal Observatory of Belgium = Observatoire Royal de Belgique
- Ruhr University Bochum = Ruhr-Universität Bochum
- Russian Academy of Sciences [Moscow]
- Russian Federal Service for Hydrometeorology and Environmental Monitoring
- Russian Federal Space Agency
- Russian Research Center "Kurchatov Institute"
- Rutgers, The State University of New Jersey [New Brunswick]
- Rutgers University System