- CA3, Uninova, Campus New University of Lisbon|FC
- CAS Software AG
- CAS Software [Karlsruhe]
- CCI Tulle, Immeuble Consulaire du Puy-Pinçon
- CEDOC - Department of Rheumatology
- CEFET-RJ
- CELS - Research Group on Industrial Engineering, Logistics and Services Operations
- CEMEX Research Group AG
- CEMOP
- CETEHOR [Département technique du Comité FRANCECLAT]
- CIDESI Texas
- CIDMA - University of Aveiro
- CIEB-ISEL
- CIGIP
- CIGIP (Centro de Investigación Gestión e Ingeniería de Producción), Dpto. Organización de Empresas, Escuela Politécnica Superior de Alcoy
- CIPEL
- CNR - Institute of Complex Systems
- CNR-ITIA
- COMmunications NUMériques - IEMN
- COnception de l'ACTIon en Situation
- CPFL Energia
- CRIQ (Québec Industrial Research Centre)
- CTS - Uninova
- CTS - Uninova and Faculdade de Ciências e Tecnologia
- CTS, UNINOVA – Campus FCT|UNL
- CTS-UNINOVA
- CTS|UNINOVA, Faculty of Sciences and Technology
- Capgemini Engineering [Blagnac]
- Cardiff Business School
- Cardiff School of Engineering
- Cardiff University
- Carlsberg Fondation = Carlsbergfondet [Copenhague]
- Cassa di Risparmio di Asti s.p.a.
- Cedrat Technologies
- Center for Computacional and Stochastic Mathematics
- Center for GeoBioSciences, GeoTechnologies and GeoEngineering
- Center for Innovation in Electrical and Energy Engineering [Lisboa]
- Center for Precision Metrology, Dept. of ME&ES
- Center of Electronics Optoelectronics and Telecommunications [Faro]
- Center of Technology and Systems
- Central Switzerland Center
- Centrale Lille
- CentraleSupélec
- Centre G2I
- Centre Génie Industriel
- Centre Interuniversitaire de Recherche sur les Réseaux d'Entreprise, la Logistique et le Transport
- Centre National de la Recherche Scientifique
- Centre Suisse d'Electronique et Microtechnique SA
- Centre Suisse d'Electronique et de Microtechnique S.A.
- Centre Suisse d'Electronique et de Microtechnique SA [Neuchatel]
- Centre d'études et de recherches appliquées à la gestion
- Centre de Développement des Technologies Avancées
- Centre de Génie Industriel et Informatique
- Centre de Recherche en Automatique de Nancy
- Centre for Aerospace Manufacturing
- Centre for Energy and Environment Research
- Centre for Enterprise Architecture Research and Management
- Centre for Industry and Innovation Studies
- Centre for Management Research Denkendorf
- Centre for Marine Technology and Ocean Engineering
- Centre for Software Reliability
- Centre of Physics of the University of Minho
- Centre of Technology and Systems
- Centre of Technology and Systems, CTS, UNINOVA
- Centre of Technology and Systems, Faculdade de Ciências e Tecnologia
- Centre universitaire de formation et de recherche Jean-François Champollion - JFC (FRANCE)
- Centro Algoritmi [Guimarães]
- Centro Interuniversitário de História das Ciências e da Tecnologia
- Centro Interuniversitário de História das Ciências e da Tecnologia [Caparica]
- Centro Nacional de Microelectronica [Spain]
- Centro Ricerche Fiat
- Centro Tecnológico Industrias Têxtil Vestuário Portugal
- Centro de Electrónica, Optoelectrónica e Telecomunicações, Departamento de Física
- Centro de Estudos de Doenças Crónicas
- Centro de Física Nuclear da Universidade de Lisboa
- Centro de Informática e Tecnologia Informação
- Centro de Integração e Inovação de Processos
- Centro de Investigación de Gestión e Ingenieria de la Producción [Valencia]
- Centro de Investigación de Gestión e Ingeniería de la Producción
- Centro de Investigación en Gestión e Ingeniería de Producción [Valencia]
- Centro de Investigação em Energia REN-State Grid, S. A.
- Centro de Investigação em Sociologia Económica e das Organizações
- Centro de Tecnologia da Informação Renato Archer - CTI, Rodovia Dom Pedro I, Km 143,5
- Chair for Information Systems, esp. ystems Engineering
- Chair of Quality Engineering
- Chemnitz University of Technology | Technische Universität Chemnitz
- Chernihiv National University of Technology
- Chernihiv State Technological University
- China Agricultural University
- Chonbuk National University
- Chronic Diseases Research Center
- Chungju National University
- Cie3 - Center for Innovation in Electrical and Energy Engineering
- CircoVision UG
- Cisco Systems
- City College [International Faculty of the University of Sheffield]
- City University London
- City University London, Cass Business School
- Clausthal University of Technology
- Clayton School of IT
- Coburg University of Applied Sciences and Arts
- College of Engineering, Mathematics and Physical Sciences [Exeter]
- College of Information Sciences and Technology
- College of Information and Electrical Engineering [Beijing]
- Collège du Management de la Technologie [Lausanne]
- Comision de Investigaciones Cientificas de la Provincia de BsAs
- Comisión de Investigaciones Científicas [Buenos Aires]
- Comité Francéclat
- Commissariat à l'énergie atomique et aux énergies alternatives
- Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information
- Commitment AS
- Commitment AS [Lysaker]
- Companhia de Equipamentos Industriais
- Complejo Hospitalario Universitario de Albacete
- Complex Systems and Artificial Intelligence Research Centre
- Computational Intelligence Research Group
- Computer Engineering Department
- Computer Science and Information Technology
- Computer and Automation Research Institute [Budapest]
- Conception Produit Process
- Conception collaborative
- Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires]
- Consejo Superior de Investigaciones Cientificas [España] = Spanish National Research Council [Spain]
- Consiglio Nazionale delle Ricerche
- Consiglio Nazionale delle Ricerche [Milano]
- Corporación Educacional Nagüilán
- Corvinus University of Budapest
- Costa Rica Institute of Technology [Cartago]
- Countryside and Community Research Institute [Cheltenham]
- Cranfield University
- Critical Health [Coimbra]
- Customer Innovation Centre, Thales Communications & Security
- Cyntelix Corporation Ltd.
- Czech Technical University in Prague
- Câmara Municipal de Évora