- RLP-Agroscience GmbH|Alplanta-Institute for Plant Research
- RSPB
- RUDEC
- Radboud University Nijmegen
- Radboud University [Nijmegen]
- Radiation and Nuclear Safety Authority [Helsinki]
- Recursion [Salt Lake City, UT]
- Regional Euro-Asian Biological Invasions Centre
- Regione Emilia-Romagna
- Research Centre for Agrobiology and Pedology
- Research Institute for Agricultural, Fisheries and Food
- Research Institute for Nature and Forest
- Research Institute of Organic Agriculture - Forschungsinstitut für biologischen Landbau
- Retraité
- Rheinische Friedrich-Wilhelms-Universität Bonn
- Rigshospitalet [Copenhagen]
- Roswell Park Cancer Institute [Buffalo]
- Rothamsted Research
- Royal Belgian Institute of Natural Sciences
- Royal Brompton and Harefield NHS Foundation Trust
- Royal Devon & Exeter Hospital
- Russian Academy of Agricultural Sciences
- Réseau National Alimentation Cancer Recherche (réseau NACRe)