- Races de France
- Radboud University [Nijmegen]
- Radboud University Nijmegen
- Radio RFI
- RAS
- Razi University of Kermanshah
- Recursion [Salt Lake City, UT]
- Regeneron Pharmaceuticals [Tarrytown, NY]
- Regional Euro-Asian Biological Invasions Centre
- Regional Health Agency
- Regione Autonoma Valle d'Aosta
- Regione Emilia-Romagna
- Research and Innovation Centre
- Research and Innovation Centre, Fondazione Edmund Mach
- Research Centre for Agrobiology and Pedology
- Research Foundation - Flanders [Brussel]
- Research Institute for Agricultural, Fisheries and Food
- Research Institute for Nature and Forest
- Research Institute of Organic Agriculture - Forschungsinstitut für biologischen Landbau
- Réseau Action Climat
- Réseau Agriculture Durable
- Réseau National Alimentation Cancer Recherche (réseau NACRe)
- Réserve de Biosphère de l’archipel de Guadeloupe
- Retraité
- Rheinische Friedrich-Wilhelms-Universität Bonn
- Rheinisch-Westfälische Technische Hochschule Aachen University
- Rhodes University, Grahamstown
- Rigshospitalet [Copenhagen]
- Rijksdienst voor Ondernemend Nederland
- Rijk Zwaan
- Rijk Zwaan Breeding BV,
- RLP-Agroscience GmbH|Alplanta-Institute for Plant Research
- Rodent Green
- Roskilde University
- Roswell Park Cancer Institute [Buffalo]
- Rothamsted Research
- Royal Agricultural University
- Royal Brompton and Harefield NHS Foundation Trust
- Royal Brompton Hospital
- Royal Devon & Exeter Hospital
- Royal Holloway [University of London]
- Royal Museum for Central Africa [Tervuren]
- Royal Netherlands Academy of Arts and Sciences
- Royal Netherlands Meteorological Institute
- Royal Veterinary College
- RSPB
- RTI International, Research Triangle Park, NC
- RUDEC
- Ruhr University Bochum = Ruhr-Universität Bochum
- Russian Academy of Agricultural Sciences