- PAL Surface Treatment System Ltd.
- PPI AG [Hamburg]
- PRES Université Nantes Angers Le Mans
- PRIMA INDUSTRIE S.p.A.
- PTC Sweden
- Parque Tecnológico de Álava
- Paulista University
- Paulista University - Postgraduate Studies Program in Production Engineering
- Pemex Exploración y Producción [Campeche]
- Penn State System
- Pennsylvania State University
- Pohang University of Science and Technology
- Politecnico di Milano [Milan]
- Politecnico di Torino = Polytechnic of Turin
- Polytechnic School [São Paulo]
- Polytechnic School of São Paulo University
- Polytechnic School of the University of São Paulo (Brazil)
- Polytechnic University of Bari | Politecnico di Bari
- Polytechnic University of Marche | Università Politecnica delle Marche
- Polytechnic University of Tirana
- Polytechnic of Požega
- 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]
- Porsche AG
- Postal Technology Research Center, ETRI
- Postgraduate Studies Program in Production Engineering
- Poznan University of Technology
- Probayes [Montbonnot]
- Procurement manager Wincanton
- Profactor
- Promaint [Helsinki]
- Purdue University [West Lafayette]
- Pusan National University
- Pôle Universitaire Léonard de Vinci