- Radlein
- Rajalakshmi Engineering College
- Ramboll Energy, Field Development, Studies and FEED
- Recherche Opérationnelle pour les Systèmes de Production
- Reliable numerical approximations of dissipative systems
- RENAULT
- Renault Centre Technique Lardy
- Renault Truck Powertrain
- ReResearch Institute of Petroleum Exploration and Development
- Research and Advanced Engineering, Ford of Europe
- Research and Technology Center
- Research and Technology Center, Robert Bosch LLC
- Research & Development Center
- Research Group of Applied Thermal Engineering
- Research Institute of Innovative Technology for the Earth
- Research Institute of Petroleum Exploration and Development, CNPC
- Research Institute of Petroleum Exploration & Development, PetroChina
- Research Institute of Petroleum Industry (RIPI)
- Réseau nanophotonique et optique
- Reservoir Engineering, Kappa North America Inc.
- Rheinisch-Westfälische Technische Hochschule Aachen University
- RHODIA
- Rhodia Centre de Recherche
- Rhodia, Centre de Recherches d'Aubervilliers
- Rhodia (FRANCE)
- Rhone Poulenc
- Rhône-Poulenc Recherches
- RIPED
- RIPI - Research Institute of Petroleum Indistry, Tehran
- Robert Bosch Gmbh [Schwieberdingen]
- R. Raghavan Inc
- RSI
- Russian Academy of Sciences [Moscow]