- CEA Tech Hauts-de-France
- CEA Tech en régions
- CEDRIC. Optimisation Combinatoire
- CEETEPS - College of Technology Zona Leste
- CELS - Research Center on Logistics and After-Sales Service
- CELS - Research Center on Logistics and After-Sales Services
- CELS - Research Group on Industrial Engineering, Logistics and Services Operations
- CEMEX
- CERCLH - Conseil et accompagnement des établissements de santé
- CESI : groupe d’Enseignement Supérieur et de Formation Professionnelle
- CIDISI
- CLAAS Selbstfahrende Erntemaschinen GmbH
- CMP-GC
- CNR-ITIA
- COnception de l'ACTIon en Situation
- California State University [Long Beach]
- Cambridge University
- Camilo Castelo Branco University
- Canada Research Chair in Interconnected Business Engineering
- Capgemini
- Carl Von Ossietzky Universität Oldenburg = Carl von Ossietzky University of Oldenburg
- Catholic University of Leuven = Katholieke Universiteit Leuven
- Center for Enterprise Sciences (BWI)
- Center for Exact and Technological Science, Univates
- Center for Industrial Production
- CentraleSupélec
- Centre Génie Industriel
- Centre Ingénierie Santé, Saint-Étienne
- Centre National de la Recherche Scientifique
- Centre d'Etude et de Recherche Travail Organisation Pouvoir
- Centre d'études et de recherche en informatique et communications
- Centre de Gestion Scientifique i3
- Centre de Recherche Clermontois en Gestion et Management
- Centre de Recherche en Automatique de Nancy
- Centre de recherche en économie et management
- Centre de recherche et d'études en gestion
- Centre for Advanced Manufacturing Technologies (CAMT), Institute of Production Engineering and Automation
- Centre for Innovation Research [Stavanger]
- Centre for Research and Technology Hellas [Athènes]
- Centre technique des industries mécaniques [Cetim, France]
- Centro Algoritmi [Guimarães]
- Centro Estadual de Educação Tecnológica Paula Souza
- Centro Universitário das Faculdades Metropolitanas Unidas = University Center of United Metropolitan Faculties
- Centro de Investigación de Gestión e Ingenieria de la Producción [Valencia]
- Centro di Ateneo di Studi e Attività Spaziali “Giuseppe Colombo”
- Cetim
- Chalmers University of Technology [Gothenburg, Sweden]
- Chalmers University of Technology [Göteborg]
- Chemnitz University of Technology | Technische Universität Chemnitz
- Chercheur indépendant
- Chiba University Hospital
- Chihuahua Institute of Technology
- China Earthquake Administration
- Chinese Academy of Sciences [Beijing]
- Chongqing University [Chongqing]
- Chonnam National University [Gwangju]
- Chosun University
- Christian-Albrechts-Universität zu Kiel = Christian-Albrechts University of Kiel = Université Christian-Albrechts de Kiel
- Chung-Ang University
- Chung-Ang University [Seoul]
- Chur University of Applied Sciences
- Ciaotech Srl
- Clemson University
- Clermont Recherche Management
- College of Economics and Management [Yangling]
- College of Electrical Engineering [Zhejiang]
- College of Engineering, Mathematics and Physical Sciences [Exeter]
- College of Technology
- Collinstown Ind. Estate
- Comenius University in Bratislava
- Commissariat à l'énergie atomique et aux énergies alternatives
- Companhia de Saneamento Básico do Estado de São Paulo
- Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires]
- Conservatoire National des Arts et Métiers [CNAM]
- Consiglio Nazionale delle Ricerche [Milano]
- Conti Temic Microelectronic GmbH
- Core Innovation and Technology O.E
- Coventry University
- Cracow University of Technology
- Cranfield University
- Cruzeiro do Sul University-UNICSUL
- Czech Institute of Informatics, Robotics and Cybernetics [Prague]
- Czech Technical University in Prague