- PDC
- PDVSA Intevep
- PDVSA Inventep
- PERL Canada
- PRES Université de Grenoble
- PSA Peugeot - Citroën
- PSA Peugeot Citroën
- Parallélisme, Réseaux, Systèmes, Modélisation
- Parfums Christian Dior
- Particulate Solid Research Inc.
- Peking University [Beijing]
- Pemex Exploración y Producción [Campeche]
- Penn State System
- Pennsylvania State University
- Perenco
- Persian Gulf Science and Technology Park
- Persian Gulf University
- Peter Banks Associates Process Simulation Consultancy
- PetroChina Research
- PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China
- PetroChina Research Institute of Petroleum Exploration and Development (PetroChina Research)
- Petrobras
- Petrobras Research Center
- Petrobras [Rio de Janeiro]
- Petrochina Beijing Oil and Gas Pipeline Control Center
- Petrochina Research Institute of Petroleum Exploration & Development-Langfang
- Petroleum Engineering Department [Golden CO]
- Petroleum Engineering School, Southwest Petroleum University
- Petroleum Research Center
- Petroleum University of Technology
- Petroleum University of Technology Research Center
- Petroleum University of Technology, PUT
- Petróleo Brasileiro S.A., Petrobras
- Phillips Petroleum Company
- Phillips Petroleum Company Norway
- Physical Science and Engineering Division, King Abdullah University of Science and Technology
- Physico-Chimie des Polymères
- Physico-chimie des milieux aqueux complexes
- Physico-chimie des polymères
- Physics of Geological Processes [Oslo]
- Physiologie et biotechnologie des Algues
- Physique des milieux poreux
- Physique et mécanique des milieux hétérogenes (UMR 7636)
- Piaggio Spa
- Poliplugs
- Politechnica University of Bucharest
- Politecnico di Milano [Milan]
- Politecnico di Torino = Polytechnic of Turin
- Politehnica University of Timisoara
- Polska Akademia Nauk = Polish Academy of Sciences
- Polymères, biopolymères, membranes
- Polynem
- Polytech Nancy | Ecole Supérieure des Sciences et Technologies de l'Ingénieur de Nancy
- Polytech'Paris - Sorbonne Université
- Principia [La Ciotat]
- ProSim SA (FRANCE)
- Procatalyse
- Procédés et REactivité des Systèmes Solide-gaz, Instrumentation et Capteurs
- PrograMming and scheduling design fOr Applications in Interactive Simulation
- Programa de Maestria y Doctorado en Ingenieria, Universidad Nacional Autonoma de Mexico Facultad de Ingenieria
- Prosernat
- Protéus SA
- Purdue University [West Lafayette]
- personne privée