| CIHEAM | Centre International des Hautes Études Agronomiques Méditerranéennes (www.ciheam.org) | In French | → Research institutes → Agricultural sciences |
| CIHEF | Commission Internationale Humanitaire d'Établisssement des Faits (www.ihffc.org) = IHFCC | International Humanitarian Fact-Finding Commission | In English |
In French | → Organizations and associations → International law |
| CIIBA | Comité Interministériel de l'Informatique et de la Bureautique dans l'Administration | In French | → Computer science → Central administration |
| CIID | Commission Internationale pour les Irrigations et le Drainage = ICID | International Commission for Irrigation and Drainage | In English |
In French | → Organizations and associations → 627 → Agricultural sciences |
| CIINB | Commission Interministérielle des Installations Nucléaires de Base | In French | → Organizations and associations → Central administration → Nuclear technology |
| CIISE | Commission Internationale de l'Intervention et de la Souveraineté des États (www.iciss-ciise.gc.ca) = CONAP | Confederación de Nacionalidades Amazónicas del Perú | In Spanish = CONAP | Confederation of Amazonian Nationalities of Peru | In English = CONAP | Confédération des Nationalités Amazoniennes du Pérou | In French = CONAP | Confederação das Nações Amazônicas do Peru | In Portuguese = ICISS | International Commission on Intervention and State Sovereignty | In English |
In French | → International relations → United Nations |
| CIJ | Cour Internationale de Justice (www.icj-cij.org) = CIJ | Corte Internacional de Justicia | In Spanish = ICJ | International Court of Justice | In English = CIJ | Corte Internacional de Justiça | In Portuguese = CIJ | Cort Internacional de Justícia | In Catalan = MSD | Mezinárodní soudní dvůr | In Czech = IGH | Internationaler Gerichtshof | In German = ΔΔΔ | Διεθνές Δικαστήριο της Δικαιοσύνης | In Greek = IK | Internacia Kortumo | In Esperanto = ICJ | 국제사법재판소 | In Korean = TTT | Tarptautinis Teisingumo Teismas | In Lithuanian = MTS | Międzynarodowy Trybunał Sprawiedliwości | In Polish = MSD | Medzinárodný súdny dvor | In Slovak = МСП | Међународни суд правде | In Serbian = MSP | Međunarodni sud pravde | In Serbo-Croatian |
In French | → International relations → Law, jurisprudence |
| CIJEF | Conseil International des organisations de Jeunes de la Francophonie | In French | → Organizations and associations |
| CIJV | Centre International Jules-Verne (www.cijv.fr) | In French | → Museums → Literature |
| CIL | Concours Informatique Luxembourgeois | In French | → Computer science |
| CIL | Centre Interprofessionnel du Logememt | In French | → Accommodation |
| CILOF | Compagnie Immobilière pour le Logement des Fonctionnaires | In French | → Accommodation → Public administration, government |
| CIM | Comité Interministériel | In French | → Central administration |
| CIMAC | Conseil International des Machines à Combustion | In French | → Organizations and associations → Mechanical engineering |
| CIMADE | Comité Inter-Mouvements Auprès Des Évacués | In French | → Organizations and associations → 3417 |
| CIME | Comité d’Information et de Mobilisation pour l’Emploi | In French | → Organizations and associations → Labour, labour economics |
| CIME | Centre Inter-régional des Mouvements d’Énergie | In French | → Energy economics |
| CIMIR | Commission Interministérielle des Matériels d'Imprimerie et de Reprographie | In French | → Central administration → Graphic industries, printing, publishing |
| CIMLS | Cercle Informatique Médicale entre Lesse et Semois | In French | → Organizations and associations → Computer science → Medicine |
| CIMPA | Centre International de Mathématiques Pures et Appliquées | In French | → Mathematics |
| CIN | Conférence Internationale sur la Nutrition = CIN | Conferencia Internacional sobre Nutrición | In Spanish = ICN | International Conference on Nutrition | In English = CIN | Conferência Internacional sobre Nutrição | In Portuguese |
In French | → Congresses → Nutrition |
| CINES | Centre Informatique National de l'Enseignement Supérieur (www.cines.fr) | In French | → Computer science → Education |
| CIO | Centre d'Information et d'Orientation | In French | → Labour, labour economics → Education |
| CIO | Comité International Olympique (www.olympic.org) = IOC | International Olympic Committee | In English = МОК | Международен олимпийски комитет | In Bulgarian = MOO | Međunarodni olimpijski odbor | In Bosnian = COI | Comitè Olímpic Internacional | In Catalan = MOV | Mezinárodní olympijský výbor | In Czech = IOK | Internationales Olympisches Komitee | In German = ΔΟΕ | Διεθνής Ολυμπιακή Επιτροπή | In Greek = IOK | Internacia Olimpika Komitato | In Esperanto = COI | Comité Olímpico Internacional | In Spanish = ROK | Rahvusvaheline Olümpiakomitee | In Estonian = KOK | Kansainvälinen olympiakomitea | In Finnish = COI | Comité Olímpico Internacional | In Galician = MOO | Međunarodni olimpijski odbor | In Croatian = NOB | Nemzetközi Olimpiai Bizottság | In Hungarian = TOK | Tarptautinis olimpinis komitetas | In Lithuanian = IOC | Internationaal Olympisch Comité | In Dutch = IOK | (Den) internasjonale olympiske komité | In Norwegian = MKOI | Międzynarodowy Komitet Olimpijski | In Polish = COI | Comité Olímpico Internacional | In Portuguese = МОК | Международный олимпийский комитет | In Russian = MOK | Međunarodni olimpijski komitet | In Serbo-Croatian = MOV | Medzinárodný olympijský výbor | In Slovak = MOK | Mednarodni olimpijski komite | In Slovenian = МОК | Међународни олимпијски комитет | In Serbian = IOK | Internationella Olympiska Kommitté | In Swedish = МОК | Міжнародний олімпійський комітет | In Ukrainian |
In French | → Organizations and associations → Sport, physical exercises |
| CIP | Centre d’Information du Public | In French | → Libraries |
| CIP | Certificat d'Investissement Privilégié | In French | → Finance |
| CIPFG | Coalition d'Investigation sur la Persécution du Falun Gong en Chine | In French | → Organizations and associations → Modern spiritual movements |
| CIPM | Comité International des Poids et Mesures = CIPM | Comitê International des Pesos e Medidas | In Portuguese |
In French | → Standardization |
| CIPN | Centre d’Ingénierie du Parc Nucléaire en exploitation | In French | → Nuclear technology |
| CIPP | Centre d'Information sur les Problèmes de la Population | In French | → Demography → Sociology |
| CIPR | Commission Internationale de Protection Radiologique | In French | → Nuclear technology |
| CIPREL | Compagnie Ivoirienne de PRoduction d’ÉLectricité | In French | → Electrical engineering |
| CIPUF | Carrefour International de la Presse Universitaire Francophone (www.cipuf.org) | In French | → Organizations and associations → Newspapers, journalism → Higher education, universities |
| CIR | Crédit d'Impôt Recherche | In French | → Research policy → Taxes, duties |
| CIR | Centre Interdisciplinaire de Recherche comparative en sciences sociales | In French | → Social sciences |
| CIR | Centre Interdisciplinare de Recherche Comparative en Sciences Sociales = ICCR | Interdisciplinary Centre for Comparative Research in the Social Sciences | In English |
In French | → Social sciences |
| CIRA | Centre Interministériel de Renseignements Administratifs | In French | → Central administration |
| CIRA | Contrôle Industriel et Régulation Automatique | In French | → Specialized or (poly)technical colleges → Mechanical engineering |
| CIRA | Centre International de Recherches sur l'Anarchisme | In French | → Politics |
| CIRAD | Centre de coopération internationale en recherche agronomique pour le développement | In French | → Biological sciences → Zoology → Agricultural sciences |
| CIRASTI | Collectif Interassociatif pour la Réalisation d'Activités Scientifiques et Techniques Internationales | In French | → International relations → Applied sciences, technology → Engineering, technology |
| CIRAT | Centre d'Information et de Recrutement de l'Armée de Terre | In French | → Labour, labour economics → 355 |
| CIRCD | Caisse Interprofessionnelle de Retraite des Commerçants Détaillants | In French | → Labour, labour economics → Trade → Insurance |
| CIRDI | Centre International pour le Règlement des Différends relatifs aux Investissements (www.worldbank.org/icsid/) = CIADI | Centro Internacional de Arreglo de Diferencias relativas a Inversiones | In Spanish = ICSID | International Centre for Settlement of Investment Disputes | In English |
In French | → International economic cooperation → Finance |
| CIRED | Centre International de Recherches sur l'Environnement et le Développement | In French | → Research institutes → Nature → Agricultural sciences |
| CIRESS | Centre Interdisciplinaire de Recherches et d'Études sur les Systèmes Sociaux | In French | → Organizations and associations → Social sciences |
| CIRESS | Colloque International sur les Ressources en Eau Souterraines dans le Sahara | In French | → Congresses → Hydrology |
| CIRHAC | Centre Inter-universitaire de Recherche en Histoire de l’Art Contemporain | In French | → Research institutes → History |
| CIRI | Comité sur l'Intégration Régionale des Intrants = CIRI | Comité de Integración Regional de Insumos | In Spanish = CRII | Committee for Regional Integration of Inputs | In English = CIRI | Comitê de Integração Regional de Insumos | In Portuguese |
In French | → International economic cooperation |
| CIRI | Comité Interministériel de Restructuration Industrielle | In French | → Central administration → Industry, industrial policy |
| CIRIDD | Centre International de Ressources et d'Innovation pour le Développement Durable | In French | |
| CIRIEC | Centre International de Recherches et d'Information sur l'Économie Publique, Sociale et Coopérative = IFIG | Internationales Forschungs- und Informationszentrum für öffentliche Wirtschaft, Sozialwirtschaft und Genossenschaftswesen | In German |
In French | → Organizations and associations → Economics |
| CIRIMAT | Centre Interuniversitaire de Recherche et d’Ingénierie des Matériaux | In French | → 620 |
| CIRP | Compagnie Immobilière de la Région Parisienne | In French | → Accommodation |
| CIRST | Comité Interministériel de la Recherche Scientifique et Technique | In French | → Central administration → Research policy |
| CIRT | Compagnie Internationale de Radiodiffusion et de la Télévision | In French | → Telecommunications |
| CIS | Centre d'Information sur la Surdité | In French | → Libraries → Pathology |
| CISI | Compagnie Internationale de Services en Informatique | In French | → Computer science |
| CISI | Comité Interministériel pour la Société de l'Information | In French | → Central administration → Computer science → Telecommunications |
| CISL | Confédération Internationale des Syndicats Libres (www.icftu.org) = ICFTU | International Confederation of Free Trade Unions | In English = CIOSL | Confederación Internacional de Organizaciones Sindicales Libres | In Spanish = CIOSL | Confederação Internacional de Organizações Sindicais Livres | In Portuguese = ICB | International Criminal Bar | In English = BPI | Barreau Pénal International | In French |
In French | → Organizations and associations → Labour, labour economics |
| CISM | Conseil International du Sport Militaire | In French | → Organizations and associations → 355 → Sport, physical exercises |
| CISMA | Conférence Internationale sur le Sida et les Maladies sexuellement transmissibles en Afrique | In French | → Organizations and associations → Infectious diseases |
| CISMeF | Catalogage et Indexation des Sites Médicaux Francophones | In French | → Libraries → Medicine |
| CISMOC | Centre pour l'étude de l'islam dans le monde contemporain | In French | → Islam |
| CISR | Comité Interministériel de la Sécurité Routière | In French | → Central administration → Telecommunications |
| CISR | Comité Interministériel de Sécurité Routière | In French | → Central administration → Transport and postal services |
| CIST | Centre d'Information sur les Sciences de la Terre | In French | → Libraries → Earth sciences |
| CIT | Centre d'Ingénierie Thermique | In French | → Energy economics |
| CIT | Centre International de Toxicologie (www.citox.com) | In French | → 815 |
| CITEF | Conférence Internationale des Formations d'Ingénieurs et Techniciens d'Expression Française | In French | |
| CITEL | Commission Interaméricaine des Télécommunications = CITEL | Comisión Interamericana de Telecomunicaciones | In Spanish = CITEL | Comissão Interamericana de Telecomunicações | In Portuguese |
In French | → Organizations and associations → Telecommunications |
| CITHER | Consultation en Texte Intégral des THèses en Réseau | In French | → Knowledge management → Higher education, universities → Mathematics and natural sciences |
| CITI | Centre d’Innovation en Télécommunications et Intégration de services | In French | → Research institutes → Telecommunications |
| CITILOG | Carrefour Intelligent - Traitement d'Images LOGiciels | In French | → Image processing → Transport and postal services |
| CITP | Certificat d’Initiation Technique et Professionnelle | In French | → Education |
| CIU | Club International Universitaire | In French | → Organizations and associations → Higher education, universities |
| CIUMR | Commission Internationale des Unités et des Mesures de Radiation = ICRU | International Commission on Radiation Units and Measurements | In English = CIUMR | Comisión Internacional de Unidades y Medidas Radiológicas | In Spanish = CIUMR | Comissão Internacional de Unidades e Medidas Radiação | In Portuguese |
In French | → Standardization → Nuclear technology |
| CIUP | Cité Internationale Universitaire de Paris (www.ciup.fr) | In French | → Accommodation → Higher education, universities |
| CIVAM | Centre d’Initiative pour Valoriser l’Agriculture et le Milieu rural | In French | → Organizations and associations → Agricultural sciences |
| CIVD | Coagulation Intravasculaire Disséminée | In French | → Blood and circulatory system |
| CJCE | Cour de Justice des Communautés Européennes = CJEC | Court of Justice of the European Communities | In English = TJCE | Tribunal de Justícia de les Comunitats Europees | In Catalan = LICE | Llys Cyfiawnder Ewrop | In Welsh = ΔΕΚ | Δικαστήριο των Ευρωπαϊκών Κοινοτήτων | In Greek = EuGH | Europäischer Gerichtshof | In German = JKEK | Justica Kortumo de Eŭropaj Kortumoj | In Esperanto = TJCE | Tribunal de Justicia de las Comunidades Europeas | In Spanish = CGCE | Corte di Giustizia delle Comunità Europee | In Italian = HvJEG | Hof van Justitie van de Europese Gemeenschappen | In Dutch = EBTT | Europos Bendrijų Teisingumo Teismas | In Lithuanian |
In French | → Law, jurisprudence → European Union |
| CJD | Centre des Jeunes Dirigeants d'Entreprises | In French | → Organizations and associations → Economics |
| CJDES | Centre des Jeunes Dirigeants et des acteurs de l'Économie Sociale | In French | → Economics |
| CJE | Compteur Jaune Électronique | In French | → Electrical engineering |
| CJF | Convention Jeune Formation | In French | → Education |
| CLAD | Centre Latino-américain d'Administration pour le Développement (www.clad.org.ve) = CLAD | Centro Latinoamericano de Administración para el Desarrollo | In Spanish = CLAD | Centro Latino-americano de Administração para o Desenvolvimento | In Portuguese |
In French | → Public administration, government → Development |
| CLADES | Centre Latino-américain de Documentation Économique et Sociale = CLADES | Centro Latinoamericano de Documentación Económica y Social | In Spanish = CLADES | Centro Latino-americano de Documentação Econômica e Social | In Portuguese |
In French | → Libraries → Social sciences → Economics |
| CLAEH | Centre Latino-Américain d'Économie Humaine (www.claeh.org.uy) = CLAEH | Centro Latino-Americano de Economía Humana | In Spanish = CLAEH | Centro Latino-americano de Economia Humana | In Portuguese |
In French | → Research institutes → Economics |
| CLAP | Comité de Liaison pour l'Alphabétisation et la Promotion | In French | → Education |
| CLC | Club Langues et Civilisations | In French | → Education → Linguistics |
| CLC | Centre Loisirs et Culture | In French | → Entertainment |
| CLCC | Centres de Lutte Contre le Cancer | In French | → Oncology |
| CLD | Conseil Local de Développement | In French | → Politics → Regional planning |
| CLE | Compteur Libre Énergie | In French | → Energy economics → Electrical engineering |
| CLE | Comité Local d'Experts | In French | → Organizations and associations |
| CLEISS | Centre des Liaisons Européennes et Internationales de Sécurité Sociale | In French | → Insurance |
| CLEM | Centre des Lettres et des Mots | In French | |
| CLEMI | Centre de Liaison de l'Enseignement et des Moyens d'Information | In French | → Education |
| CLER | Comité de Liaison Énergies Renouvelables | In French | → Energy economics |
| CLEV | Culture, Loisirs, Entraide, Voyages | In French | → Organizations and associations |
| CLF | Crédit Local de France | In French | → 33677 |
| CLGE | Comité de Liaison des Géomètres Européens | In French | → Organizations and associations → Geodesy, cartography |
| CLI | Commission Locale d'Insertion | In French | → Social welfare |
| CLIN | Comité de Lutte contre l'Infection Nosocomiale | In French | → Organizations and associations → Infectious diseases |
| CLIP | Comité de Liaison et d'Informations Parlementaires | In French | → Parliaments, representation |
| CLIPS | Communication Langagière et Interaction Personne-Système | In French | → Human-computer interaction → Linguistics |
| CLIS | Commission Locale d'Information et de Surveillance | In French | |
| CLL | Comité Local de Libération | In French | → History |
| CLM | Courir Le Monde (http://courirlemonde.org) | In French | → Sport, physical exercises |
| CLO | Club Linux Outaouais | In French | → Organizations and associations → Operating systems |
| CLORA | CLub des Organismes de Recherche Associés | In French | → Organizations and associations → Research policy |
| CLOUS | Centre Local des Oeuvres Universitaires et Scolaires | In French | → Education |
| CLPCF | Centre de Lecture Publique de la Communauté Française | In French | → Libraries |
| CLPUE | Comité de Liaison des Podologues de l'Union Européenne | In French | |
| CLUD | Comité de Lutte contre La Douleur | In French | → Organizations and associations → Medicine |
| CLUSIF | Club de la Sécurité de l'Information Français | In French | |
| CLV | Commission Langues Vivantes | In French | → Education → Language, linguistics, literature |
| CMA | Centre de Mathématiques Appliquées | In French | → Mathematics |
| CMA | Compagnie Maritime d'Affrètement | In French | → 6295 → Transport and postal services |
| CMB | Compagnie des Machines Bull | In French | → Hardware |
| CMCAS | Caisse Mutuelle Complémentaire et d'Action Sociale | In French | → Social welfare |
| CME | Conseil Mondial de l'Énergie = CME | Consiliul Mondial al Energiei | In Romanian = WEC | World Energy Council | In English |
In French | → Organizations and associations → International relations → Energy economics |
| CME | Congrès Mondial de l’Énergie | In French | → Congresses → Energy economics |
| CMH | Complexe Majeur d'Histocompatibilité | In French | → Biological sciences |
| CMIE | Centre Médical Interentreprises Europe | In French | → Labour, labour economics → Medicine |
| CMIP | Centre Médical de l'Institut Pasteur | In French | → Medicine |
| CMIRH | Centre Mondial Informatique et Ressources Humaines | In French | → Management → Personnel management |
| CMIS | Conférence Mondiale des Instituts Séculiers | In French | → Christianity |
| CMMIC | Compagnie Minière et Métallurgique de l’Indo-Chine | In French | → Mining → Metallurgy |
| CMOI | Contrôles et Mesures Optiques pour l’Industrie | In French | → Engineering, technology |
| CMOI | Contrôles et Mesures Optiques pour l'Industrie | In French | → Optics → Applied sciences, technology |
| CMP | Code des Marchés Publics | In French | → Law, jurisprudence → Public administration, government |
| CMP | Cytidine monophosphate | In French | → Genetics → Biochemistry, biophysics |
| CMPP | Centre Marocain de Production Propre (www.cmpp.ma) | In French | → Nature and society |
| CMPP | Centre médico-psycho-pédagogique | In French | → Psychology → Education → Medicine |
| CMR | Caisse Mutuelle Régionale | In French | → Insurance |
| CMS | Composants à Montage de Surface | In French | → Electronics |
| CMSA | Caisse de Mutualité Sociale Agricole | In French | → Insurance → Agricultural sciences |
| CMT | Confédération Mondiale du Travail | In French | → International relations → Labour, labour economics |
| CNA | Caisse Nationale des Autoroutes | In French | → Civil engineering → Transport and postal services |
| CNAC | Centre National d'Art et de Culture | In French | → Civilization, culture, progress → Arts |
| CNAC | Commission Nationale d'Arbitrage et de Contrôle | In French | → Political parties and movements |
| CNAC | Comité National Anti-Contrefaçon | In French | → Criminal law |
| CNACE | Commission Nord-Américaine de Coopération Environnementale (www.cec.org) = CCAAN | Comisión para la Cooperación Ambiental de América del Norte | In Spanish = NACEC | North American Commission for Environmental Cooperation | In English = CNACA | Comissão Norte-americana de Cooperação Ambiental | In Portuguese |
In French | → International relations → Nature |
| CNADT | Conseil National d'Aménagement et de Développement du Territoire | In French | → Public administration, government → Regional planning |
| CNAF | Caisse Nationale des Allocations Familiales | In French | → Social welfare |
| CNAFMC | Caisse Nationale d'Allocations Familiales des Marins du Commerce | In French | → Social welfare → Transport and postal services |
| CNAFNI | Caisse Nationale d'Allocations Familiales de la Navigation Intérieure | In French | → Social welfare → Transport and postal services |
| CNAFPM | Caisse Nationale d'Allocations Familiales de la Pêche Maritime | In French | → Social welfare → Fishing, hunting |
| CNAM | Caisse Nationale d'Assurance Maladie | In French | → Insurance |
| CNAM | Conservatoire National des Arts et Métiers | In French | → Specialized or (poly)technical colleges → Applied sciences, technology |
| CNAMTS | Caisse Nationale d'Assurance Maladie des Travailleurs Salariés | In French | → Labour, labour economics → Insurance |
| CNAP | Centre National des Arts Plastiques | In French | → Plastic arts |
| CNAP | Catalogue des Normes Anti-Pollution | In French | → Nature |
| CNASEA | Centre National pour l'Aménagement des Structures des Exploitations Agricoles | In French | → Organizations and associations → Agricultural sciences |
| CNAU | Centre National d'Archéologie Urbaine | In French | → Archeology |
| CNAV | Caisse Nationale d'Assurance Vieillesse | In French | → Insurance |
| CNAVPL | Caisse Nationale d'Assurance Vieillesse des Professions Libérales | In French | → Labour, labour economics → Insurance |
| CNAVTS | Caisse Nationale d'Assurance Vieillesse des Travailleurs Salariés | In French | → Labour, labour economics → Insurance |
| CNB | Caisse Nationale des Banques | In French | → Banks → Insurance |
| CNB | Conseil National des Barreaux | In French | → Law, jurisprudence |
| CNBA | Chambre Nationale de la Batellerie Artisanale | In French | → Organizations and associations → Transport and postal services |
| CNBF | Caisse Nationale des Barreaux Français | In French | → Law, jurisprudence → Insurance |
| CNBM | Confédération du Négoce de Bois et Matériaux | In French | → Organizations and associations → Trade → Timber and woodworking industry |
| CNC | Conseil National du Commerce | In French | → Organizations and associations → Trade |
| CNC | Compagnie Nouvelle de Conteneurs | In French | → Transport and postal services |
| CNC | Conseil National de la Communication | In French | → Organizations and associations → 359 |
| CNC | Centre National de la Cinématographie (www.cnc.fr) | In French | → Cinema, movies |
| CNC | Commande Numérique par Calculateur | In French | → Engineering, technology |
| CNC | Comité National de la Conchyliculture (www.cnc-france.com) | In French | → Fishing, hunting → Food technology |
| CNC | Comité des Négociations Commerciales = CNC | Comité de Negociaciones Comerciales | In Spanish = TNC | Trade Negotiations Committee | In English = CNC | Comitê de Negociações Comerciais | In Portuguese |
In French | → International economic cooperation |
| CNC | Conseil National de la Comptabilité | In French | → Organizations and associations → Accounting |
| CNCA | Caisse Nationale de Crédit Agricole | In French | → Banks → Agricultural sciences |
| CNCCFP | Commission Nationale des Comptes de Campagne et des Financements Politiques | In French | → International relations |
| CNCL | Commission Nationale de la Communication et des Libertés | In French | → Telecommunications → Politics |
| CNCP | Commission Nationale de la Certification Professionnelle | In French | |
| CNCPI | Compagnie Nationale des Conseils en Propriété Intellectuelle | In French | → Industrial property → Artistic property |
| CND | Confrérie Notre-Dame | In French | → History |
| CNDB | Centre National pour le Développement du Bois | In French | → Organizations and associations → Forestry |
| CNDCA | Comité National de Défense contre l'Alcoolisme | In French | → Organizations and associations → Medicine |
| CNDP | Centre National de Documentation Pédagogique | In French | → Libraries → Education |
| CNDRI | Contrôle Non Destructif par Rayonnements Ionisants | In French | → Mechanical engineering |
| CNE | Contrat Nouvelle Embauche | In French | → Labour, labour economics |
| CNEARC | Centre National d'Études Agronomiques des Régions Chaudes | In French | → Agricultural sciences |
| CNEC | Centre National d'Enseignement par Correspondance | In French | → Education |
| CNED | Centre National d'Enseignement à Distance | In French | → 374 |
| CNEFEI | Centre national d'Études et de Formation pour l'Enfance Inadaptée | In French | → Education |
| CNEH | Centre National de l'Équipement Hospitalier | In French | → Medicine |
| CNEH | Centre National d’Équipement Hydraulique | In French | → Energy economics |
| CNEI | Centre National d'Études Informatiques | In French | → Computer science |
| CNEME | Centre National d'Études, de Mesure et d'Expertises | In French | → Applied sciences, technology |
| CNEN | Centre National d’Équipement Nucléaire | In French | → Energy economics → Nuclear technology |
| CNEP | Centre National d'Évaluation de la Photoprotection | In French | |
| CNEPE | Centre National d’Équipement de Production d’Électricité | In French | → Electrical engineering |
| CNER | Comité National d'Évaluation de la Recherche | In French | → Research policy |
| CNER | Conseil National des Économies Régionales (www.cner-france.com) | In French | → Economics |
| CNES | Centre National d’Exploitation du Système | In French | → Electrical engineering |
| CNES | Centre National d'Études Spatiales (www.cnes.fr) | In French | → Astronomy → Spaceflight engineering, astronautics |
| CNESER | Conseil National de l'Enseignement Supérieur et de la Recherche | In French | → Education → Mathematics and natural sciences |
| CNESSS | Centre National d'Études Supérieures de la Sécurité Sociale | In French | → Insurance → Specialized or (poly)technical colleges |