- ROFF Consulting [Lisboa]
- Raumobil GmbH [Karlsruhe]
- Raytrix GmbH
- Refer, Rede Ferroviária Nacional, EP
- Regola S.r.l
- Research Center for Non Conventional Energy
- Research Centre on Production Management and Engineering
- Research Centre on Production Management and Engineering (CIGIP)
- Research Group Knowledge Engineering [Vienna]
- Research Unit on Governance, Competitiveness and Public Policies
- Research and Development Unit in Mechanical and Industrial Engineering
- Reutlingen University
- Rheinisch-Westfälische Technische Hochschule Aachen University
- Riga Technical University
- Robert Bosch Kft.
- Rohwedder Micro Assembly GmbH
- Rolls-Royce Plc
- Romanian Academy
- Royal Melbourne Institute of Technology University
- Ruhr University Bochum = Ruhr-Universität Bochum
- Russian Academy of Sciences [Moscow]
- Rzeszow University of Technology