Affiliations with the Letter R
- R.G.D. Research, Inc. -- United States
- Radiometer Medical A/S -- Denmark
- Raisio Group, Edible Fats and Oil Division -- Finland
- Rajshahi University -- Bangladesh
- Randmaste Centre -- South Africa
- Regional Research Laboratory (CSIR) -- India
- Rensselaer Polytechnic Institute -- United States
- RER Consultants -- Germany
- Research Centre Jülich -- Germany
- Research Institute of Plastics -- Russia
- Rhodes University -- South Africa
- Rhône Poulenc, S.A. -- France
- Rhône-Poulenc, Inc. -- United States
- Rice University -- United States
- Rijksinstituut voor Volksgezondheid en Milieuhygie -- Netherlands
- Rijksuniversiteit Ghent -- Belgium
- Rijksuniversiteit Groningen -- Netherlands
- RIKEN -- Japan
- RIKILT - Wageningen UR -- Netherlands
- Rio de Janeiro State University -- Brazil
- Rio Tinto Technology and Innovation -- Australia
- RIZA -- Netherlands
- RMIT University -- Australia
- Robert Gordon University -- United Kingdom
- Roche Biosciences -- United States
- Rohm & Haas Company -- United States
- Romanian Academy -- Romania
- Roskilde Universitetscenter -- Denmark
- Rostov University -- Russia
- Rovira i Virgili University -- Spain