- Radboud University
- Radboud University Nijmegen
- Radiological Society of North America
- RAL Space
- RAND Corporation
- Regenstrief Institute
- Renesas Electronics
- Rensselaer Polytechnic Institute
- Research Australia
- Research Institute of Molecular Pathology
- Research Society on Alcoholism
- ResearchSEA
- Results for Development Institute
- Rett Syndrome Research Trust
- Reykjavik University
- Rice University
- RIKEN
- Rissho University
- RMIT University
- Robert Wood Johnson Medical School
- Rochester Institute of Technology
- Rockefeller University
- Rockefeller University Press
- Rosalind Franklin University of Medicine and Science
- Rosenstiel School of Marine, Atmospheric, and Earth Science
- Roswell Park Cancer Institute
- Rothamsted Research
- Rowan University
- Royal Astronomical Society
- Royal Belgian Institute for Space Aeronomy
- Royal Botanic Gardens, Kew
- Royal College of Surgeons in Ireland
- Royal College of Surgeons in Ireland (RCSI)
- Royal Holloway, University of London
- Royal Netherlands Academy of Arts and Sciences
- Royal Observatory of Belgium
- Royal Society of Chemistry
- Royal Veterinary College
- RUDN University
- Ruhr-Universitaet-Bochum
- Rush University Medical Center
- Russian Science Foundation
- Rutgers University
- Rutgers University-New Brunswick
- Ryerson University
