- PCO Innovation, Europarc
- PLM Vendor
- PRES Université Nantes Angers Le Mans
- PROSTEP AG [Darmstadt]
- PSA Peugeot - Citroën
- PSA Peugeot Citroën
- PTC Japan Co. Ltd
- Pamukkale University
- Paris-Centre de Recherche Cardiovasculaire
- Peking University [Beijing]
- Phi Knowledge Process Enabling B.V.
- Platinion GmbH, A Company of the Boston Consulting Group
- Politecnico di Milano [Milan]
- Politecnico di Torino = Polytechnic of Turin
- Polytechnic Institute of Leiria
- Polytechnic School [São Paulo]
- Polytechnic University of Madrid
- Polytechnic University of Marche | Università Politecnica delle Marche
- Pontifical Catholic University of Paraná
- Pontificia Universidad Católica de Valparaíso
- Pontifícia Universidade Católica do Paraná [Curitiba, Brasil] = Pontifical Catholic University of Paraná [Curitiba, Brazil] = Université catholique pontificale du Paraná [Curitiba, Brésil]
- Procter & Gamble
- Purdue University [West Lafayette]