| CETIM | Centre Technique des Industries Mécaniques | In French | → Mechanical engineering |
| CETIM | Centre Europe/Tiers-Monde | In French | → International relations |
| CETMA | Centre d'Études sur le Management | In French | → Management |
| CETU | Centre d'Études Techniques des Tunnels | In French | → Civil engineering |
| CETU | Centre d'Études des Tunnels | In French | → Research institutes → Civil engineering |
| CETUR | Centre d'Études Techniques des Transports Urbains | In French | → Vehicle engineering → Transport and postal services |
| CEVE | Comité Européen du Véhicule Expérimental | In French | → Vehicle engineering |
| CEVI | Confédération Européenne des Vignerons Indépendants | In French | → Organizations and associations → Agricultural sciences → Beverage industry |
| CEVU | Conseil des Études et de la Vie Universitaire | In French | → Organizations and associations → Higher education, universities |
| CEZ | Centre d'Enseignement Zootechnique | In French | → Zoology → 636 |
| CFA | Centre de Formation des Apprentis | In French | → Labour, labour economics → Education |
| CFA | Centre de Formation d'Apprentis | In French | → Labour, labour economics → Education |
| CFAA | Centre de Formation des Apprentis Agricoles | In French | → Labour, labour economics → Education → Agricultural sciences |
| CFAC | Conférence des Forces Armées Centraméricaines = CFAC | Conferencia de las Fuerzas Armadas Centroamericanas | In Portuguese = CFAC | Conferência das Forças Armadas da América Central | In Portuguese |
In French | → International relations → 355 |
| CFAO | Conception et Fabrication Assistées par Ordinateur | In French | → Computer-based techniques → Engineering, technology |
| CFAPSE | Certificat de Formation aux Activités de Premier Secours en Équipe | In French | → Education → Medicine |
| CFAR | Collège Français des Anesthésistes Réanimateurs | In French | → Organizations and associations → Anesthesiology |
| CFAS | Code de la Famille et de l'Aide Sociale | In French | → Law, jurisprudence → Social welfare |
| CFBR | Comité Français des Barrages et Réservoirs | In French | → Civil engineering → 626 |
| CFC | Conseiller en Formation Continue | In French | → Education |
| CFC | Chrlorofluorocarbone | In French | → Chemistry → Chemical technology |
| CFCE | Centre Français du Commerce Extérieur | In French | → Trade |
| CFCG | Confédération Française du Commerce de Gros | In French | → Organizations and associations → Trade |
| CFCIC | Compagnie Financière de Crédit Industriel et Commercial | In French | → 33677 |
| CFCM | Conseil Français du Culte Musulman | In French | → Islam |
| CFCV | Collectif féministe contre le viol | In French | → Organizations and associations → Feminism |
| CFDPA | Compagnie Française de Distribution des Pétroles en Afrique | In French | → Trade → 665 |
| CFDT | Confédération Française des Travailleurs | In French | → Organizations and associations → Labour, labour economics |
| CFDT | Compagnie Française des Fibres Textiles | In French | → Textile industry |
| CFDT | Confédération Française Démocratique du Travail (www.cfdt.fr) | In French | → Organizations and associations → Labour, labour economics |
| CFE | Conseil de la Famille et de l'Enfance | In French | → Organizations and associations → Social welfare |
| CFE | Commission Fédérale des Étrangers | In French | → Organizations and associations → Migrations |
| CFE | Caisse des Français de l'Étranger | In French | → Insurance |
| CFE | Centre de Formalités des Entreprises | In French | → Economic policy |
| CFE-CGC | Confédération Française de l'Encadrement - Confédération Générale des Cadres | In French | → Management → Labour, labour economics |
| CFECTI | Centre de Formation des Coopérants Culturels et Techniques Internationaux | In French | → International relations → Education |
| CFEM | Compagnie Française d'Entreprises Métalliques | In French | → Metallurgy |
| CFEP | Chambre des Fonctionnaires et Employés Publics | In French | → Organizations and associations → Labour, labour economics → Public administration, government |
| CFES | Certificat de Fin d'Études secondaires | In French | → Education |
| CFES | Comité Français d'Éducation pour la Santé | In French | → Education → Personal health and hygiene |
| CFF | Crédit Foncier de France | In French | → 33677 |
| CFGB | Comité Français des Grands Barrages | In French | → Civil engineering → 626 |
| CFI | Canal France international | In French | → Telecommunications |
| CFI | Crédit Formation Individualisée | In French | → Labour, labour economics → Education |
| CFIS | Calculateur du Fractionnement des Isotopes Stables = SIFC | Stable Isotope Fractionation Calculator | In English |
In French | → Atomic physics |
| CFLN | Comité Français de Libération Nationale | In French | → History |
| CFM | Compagnie Française du Méthane | In French | → Energy economics |
| CFME | Centre de Formation aux Métiers de l'Environnement | In French | → Education → Environment, environmental sciences → Environmental technology, water supply, waste management |
| CFMN | Corps Franc de la Montagne Noire | In French | → History |
| CFMP | Caisse Française des Matières Premières | In French | |
| CFNR | Compagnie Française de Navigation Rhénane | In French | → Transport and postal services |
| CFP | Commission de Formation Permanente | In French | → Education → Labour, labour economics |
| CFP | Compagnie Française des Pétroles | In French | → 665 |
| CFPAJ | Centre de Formation Professionnelle Agricole pour Jeunes | In French | → Labour, labour economics → Education → Agricultural sciences |
| CFPB | Consortium Français de Participations Bancaires | In French | → Organizations and associations → 33677 |
| CFPC | Centre de Formation des Personnels Communaux | In French | → Labour, labour economics → Public administration, government |
| CFPC | Commission pour la Formation Postgraduée et Continue = KWFB | Kommission für Weiter- und Fortbildung | In German |
In French | → Education |
| CFPET | Centre de Formation des Professeurs de l'Enseignement Technique | In French | → Education → Engineering, technology |
| CFPI | Commission de la Fonction Publique Internationale = CAPI | Comisión de Administración Pública Internacional | In Spanish = ICSC | International Civil Service Commission | In English = CAPI | Comissão de Administração Pública Internacional | In Portuguese |
In French | → Public administration, government → United Nations |
| CFPJ | Centre de Formation et de Perfectionnement des Journalistes | In French | → Labour, labour economics → Specialized or (poly)technical colleges → Newspapers, journalism |
| CFPPA | Centre de Formation Professionnelle et de Promotion Agricole | In French | → Labour, labour economics → Education → Agricultural sciences |
| CFQ | Confédération Française de la Quincaillerie | In French | → Organizations and associations → Trade |
| CFR | Compagnie Française de Raffinage | In French | → 665 |
| CFRT | Centre de Facturation et de Recouvrement | In French | → Economics |
| CFSA | Centre de Formation Supérieure des Apprentis | In French | → Labour, labour economics → Education |
| CFTC | Confédération Française des Travailleurs Chrétiens | In French | → Organizations and associations → Labour, labour economics → Christianity |
| CFTE | Centre de Formation aux Techniques de l'Eau | In French | → Specialized or (poly)technical colleges → Environmental technology, water supply, waste management |
| CFTIFL | Centre Technique Interprofessionnel des Fruits et Légumes | In French | → Agricultural sciences |
| CFTV | Chemin de Fer Touristique du Vermandois | In French | → Transport and postal services → Tourism |
| CGA | Confédération Générale de l’Agriculture | In French | → Organizations and associations → Agricultural sciences → History |
| CGC | Confédération Générale des Cadres | In French | → Organizations and associations → Labour, labour economics |
| CGC | Compagnie Générale de Chauffe | In French | → Environmental technology, water supply, waste management |
| CGCI | Cellule de Gestion du Code des Investissements | In French | → 33972 |
| CGCT | Code Général des Collectivités Territoriales | In French | → Law, jurisprudence → Municipal administration → Regional administration |
| CGCT | Compagnie Générale de Constructions Téléphoniques | In French | → Telecommunications |
| CGE | Compagnie Générale des Eaux | In French | → Environmental technology, water supply, waste management |
| CGE | Compagnie Générale d'Électricité | In French | → Electrical engineering |
| CGE | Conférence des Grandes Écoles | In French | → Organizations and associations → Specialized or (poly)technical colleges |
| CGEA | Compagnie Générale d'Entreprise Automobile | In French | → Automobile manufacturing |
| CGEA | Conduite et Gestion de l'Exploitation Agricole | In French | → Specialized or (poly)technical colleges → Agricultural sciences |
| CGES | Centre de Géotechnique et d'Exploitation du Sous-sol | In French | → Earth sciences → Mining |
| CGFL | Centre Georges-François Leclerc | In French | → Oncology |
| CGFTE | Compagnie Générale Française de Transports et d'Entreprise | In French | → Transport and postal services |
| CGI | Code Général des Impôts | In French | → Taxes, duties → Law, jurisprudence |
| CGIH | Comité de Gestion de l'Informatique Hospitalière | In French | → Computer science → Medicine |
| CGLS | Caisse de Garantie du Logement Social | In French | → Accommodation |
| CGM | Compagnie Générale Maritime | In French | → Transport and postal services |
| CGMF | Compagnie Générale Maritime et Financière | In French | |
| CGMP | Cercle Généalogique de Maine et Perche | In French | → Organizations and associations → Genealogy |
| CGMP | Centre Généalogique du Midi-Provence (www.cgmp-provence.org) | In French | → Organizations and associations → Genealogy |
| CGNR | Compagnie Générale pour la Navigation du Rhin | In French | → Transport and postal services |
| CGOS | Comité de Gestion des Oeuvres Sociales | In French | → Social welfare |
| CGP | Commissariat Général du Plan | In French | → Central administration |
| CGPM | Commission Générale des Pêches pour la Méditerranée | In French | → Public administration, government → Fishing, hunting |
| CGPM | Conférence Générale des Poids et Mesures | In French | → Standardization |
| CGPME | Confédération Générale des Petites et Moyennes Entreprises | In French | → Organizations and associations → Labour, labour economics |
| CGPS | Convention Générale de Protection Sociale | In French | → Labour, labour economics → Social welfare |
| CGPT | Confédération Générale des Travailleurs Paysans | In French | → Organizations and associations → Labour, labour economics → Agricultural sciences |
| CGR | Concentré de Globules Rouges | In French | → Blood and circulatory system |
| CGRA | Commission de Gestion de la Recherche et de ses Applications | In French | → Research policy |
| CGRP | Concentré de Globules Rouges Phénotypé | In French | → Blood and circulatory system |
| CGSESE | Centre de Gestion de la Sécheresse pour l'Europe du Sud-Est = DMCSEE | Drought Management Centre for South-Eastern Europe | In English = FizTT | Fizika Tverdogo Tela | In Russian = Фтт | Физика твердого тела | In Russian |
In French | |
| CGSLB | Centrale Générale des Syndicats Libéraux de Belgique = ACLVB | Algemene Centrale der Liberale Vakbonden | In Dutch |
In French | → Organizations and associations → Labour, labour economics |
| CGSS | Caisse Générale de Sécurité Sociale | In French | → Insurance |
| CGT | Contrôle Général des Travaux | In French | |
| CGT | Confédération Générale du Travail | In French | → Organizations and associations → Labour, labour economics |
| CGT | Confédération Générale des Travailleurs | In French | → Organizations and associations → Labour, labour economics |
| CGT-FO | Confédération Générale des Travailleurs - Force Ouvrière | In French | → Organizations and associations → Labour, labour economics |
| CGT-FO | Confédération Générale du Travail-Force Ouvrière | In French | → Organizations and associations → Labour, labour economics |
| CGTI | Conseil Général des Technologies de l'Information | In French | → Computer science → Telecommunications |
| CGTL | Confédération Générale du Travail Luxembourgeoise | In French | → Organizations and associations → Labour, labour economics |
| CGTL | Confédération Générale des Travailleurs du Liban | In French | → Organizations and associations → Labour, labour economics |
| CGTU | Confédération Générale du Travail Unitaire | In French | → Organizations and associations → Labour, labour economics → History |
| CGU | Commission Gymnase-Université | In French | → Education → Higher education, universities |
| CHA | Centre Hydrométéorologique Alpes | In French | → Meteorology, climatology → Hydrology |
| CHAR | Centre d’Histoire de l’Art de la Renaissance | In French | → Research institutes → History |
| CHAR | Club d'Histoire de l'Anesthésie-Réanimation | In French | → Anesthesiology → History |
| CHARTH | Compagnie Holding d'Applications et de Réalisations Thermiques et Hydrauliques | In French | → Organizations and associations → Energy economics → Mechanical engineering |
| CHB | Centre Hépato-Biliaire | In French | → 6163 |
| CHC | Carcinome hépatocellulaire | In French | → Oncology |
| CHEAM | Centre des Hautes Études sur l'Afrique et l'Asie modernes | In French | → Area studies |
| CHG | Centre Hospitalier Général | In French | → Medicine |
| CHI | Centre Hospitalier Intercommunal | In French | → Medicine |
| CHI | Comité Juridique Interaméricain = CJI | Comité Jurídico Interamericano | In Spanish = IAJC | Inter-American Juridical Committee | In English = CJI | Comitê Jurídico Interamericano | In Portuguese |
In French | → International relations → Law, jurisprudence |
| CHIR | Chirurgie, Informatique et Robotique | In French | → Computer science → Surgery, orthopaedics, ophthalmology → Mechanical engineering → Electronics |
| CHMAC | Coopération Homme-Machine pour l'Assistance à la conduite | In French | → Human-computer interaction → Vehicle engineering → Transport and postal services |
| CHPP | Comité d'Histoire Parlementaire et Politique | In French | → Politics → Parliaments, representation → History |
| CHR | Centre Hospitalier Régional | In French | → Medicine |
| CHRS | Centre d'Hébergement et de Réinsertion Sociale | In French | → Social welfare → Accommodation |
| CHRU | Centre Hospitalier Régional et Universitaire | In French | → Medicine |
| CHS | Centre Hospitalier Spécialisé | In French | → Medicine |
| CHS | Centre d'Histoire Sociale | In French | → Sociology → History |
| CHSCT | Comité d'Hygiène, de Sécurité et des Conditions de Travail | In French | → Labour, labour economics |
| CHU | Centre Hospitalier Universitaire | In French | → Medicine |
| CHUV | Centre Hospitalier Universitaire Vaudois | In French | → Higher education, universities → Medicine |
| CHUV | Centre Hospitalier Universitaire Vétérinaire | In French | → Higher education, universities → Veterinary medicine |
| CIA | Centre d’Internement Administratif | In French | |
| CIACH | Centre International des Arts Culinaires et de l'Hotellerie | In French | → Tourism |
| CIACT | Comité Interministériel d'Aménagement et de Compétitivité du Territoire | In French | → Central administration → Regional planning |
| CIASI | Comité Interministériel d'Aménagement des Structures Industrielles | In French | → Central administration → Industry, industrial policy |
| CIAT | Comité Interministériel d'Aménagement du Territoire | In French | → Central administration → Regional planning |
| CIBC | Centres interinstitutionnels de bilans de compétences | In French | → Labour, labour economics |
| CIBT | Conseil International des Bois Tropicaux | In French | → Organizations and associations → Timber and woodworking industry |
| CIC | Centre d'Investigations Cliniques | In French | → Organizations and associations → Pharmacology, toxicology |
| CIC | Centre International de Calcul (www.unicc.org) = CICE | Centro Internacional de Cálculos Electrónicos | In Spanish = ICC | International Computing Centre | In English = CIC | Centro Internacional de Computação | In Portuguese |
In French | → Computer science → United Nations |
| CIC | Chauffage Individuel Centralisé | In French | → Energy economics |
| CIC | Centre d'Investigation Clinique | In French | → Medicine |
| CIC | Crédit Industriel et Commercial | In French | → 33677 |
| CICAE | Confédération Internationale des Cinémas d'Art et d'Essai (www.art-et-essai.org/cicae/) | In French | → Organizations and associations → Cinema, movies |
| CICF | Confédération des Industries Céramiques de France | In French | → Organizations and associations → 666 |
| CICF | Chambre des Ingénieurs-Conseil de France | In French | → Organizations and associations → Engineering, technology |
| CICF | Chambre de l'Ingénierie et du Conseil de France | In French | |
| CICI | Commission Internationale de Coopération Intellectuelle | In French | → Organizations and associations → International relations |
| CICID | Comité Interministériel de la Coopération Internationale et du Développement | In French | → Central administration → International relations → Development |
| CICLIM | Coordination Internationale des Chercheurs sur les Littératures du Maghreb | In French | → Organizations and associations → Literature |
| CICOM | Carrefour International de la Communication | In French | → Telecommunications → Transport and postal services |
| CICR | Comité International de la Croix Rouge | In French | → Development → Social welfare |
| CICR | Comité International de la Croix-Rouge (www.icrc.org) = CICR | Comité Internacional de la Cruz Roja | In Spanish = ICRC | International Committee of the Red Cross | In English = CICV | Comitê Internacional da Cruz Vermelha | In Portuguese = МККК | Международный комитет Красного Креста | In Russian = SSKK | Starptautiskā Sarkanā Krusta Komiteja | In Latvian = CICR | Comitato Internazionale della Croce Rossa | In Italian = ICRC | 적십자 국제 위원회 | In Korean = CICR | Comitè Internacional de la Creu Roja | In Catalan = CICR | Comitât entèrnacionâl de la Crouèx-Roge | FRP |
In French | → Organizations and associations → Medicine |
| CICS | Commission Interministérielle de Coordination des Salaires | In French | → Labour, labour economics → Central administration |
| CICTA | Commission Internationale pour la Conservation des Thonidés de l'Atlantique | In French | → International relations → Nature and society → Fishing, hunting |
| CID | Centre d'Information et de Documentation | In French | → Libraries |
| CIDB | Centre d'Information et de Documentation sur le Bruit | In French | → 002 |
| CIDEM | Compagnie Internationale de Développement Minier | In French | → Mining |
| CIDEN | Centre d’Ingénierie Déconstruction et ENvironnement | In French | → Environmental technology, water supply, waste management |
| CIDI | Conseil interaméricain pour le Développement Intégré = CIDI | Consejo Interamericano para el Desarrollo Integral | In Spanish = CIDI | Conselho Interamericano para o Desenvolvimento Integral | In Portuguese |
In French | → Organizations and associations → International relations → Development |
| CIDJ | Centre d'Information et de Documentation pour la Jeunesse | In French | → Libraries |
| CIDPDD | Centre International des Droits de la Personne et du Développement Démocratique (www.ichrdd.ca) = ICHRDD | International Centre for Human Rights and Democratic Development | In English |
In French | → Organizations and associations → Fundamental rights → Democracy |
| CIDS | Commission Interaméricaine pour le Développement Durable = CIDS | Comisión Interamericana de Desarrollo Sostenible | In Spanish = CIDS | Comissão Interamericana de Desenvolvimento Sustentável | In Portuguese |
In French | → Organizations and associations → International relations → Development |
| CIDT | Centre de développement des technologies de l’information | In French | → Computer science → Telecommunications |
| CIDUNATI | Confédération Intersyndicale de Défense et d'Union Nationale des Travailleurs Indépendants | In French | → Organizations and associations → Labour, labour economics |
| CIDUS | Centre d'Information et de Documentation Universitaire et Scientifique | In French | → Libraries → Higher education, universities → Mathematics and natural sciences |
| CIE | Crédit d'Impôt à l'Export | In French | → Taxes, duties → Trade |
| CIE | Conférence Islamique Européenne | In French | → Organizations and associations → Islam |
| CIE | Commission Internationale de l'Éclairage | In French | → Electrical engineering |
| CIEAMO | Consortium Inter-Universitaire pour les Études Arabes et le Moyen-Orient | In French | → Language, linguistics, literature → Geography, biography, history |
| CIEEMG | Commission Interministérielle d'Étude des Exportations de Matériels de Guerre | In French | → Military engineering |
| CIEL | Cours intensifs Erasmus de langues | In French | → Education |
| CIEM | Centre Intégré d’Évaluation des Menaces | In French | → Polemology → Police |
| CIEMI | Centre d'Information et d'Études sur les Migrations Internationales | In French | → Migrations → Sociology |
| CIEP | Centre International d'Études Pédagogiques | In French | → Education |
| CIEP | Centre International d'Études Pédagogiques | In French | → Education |
| CIES | Centre d'Initiation à l'Enseignement Supérieur | In French | → Education |
| CIES | Centre International des Étudiants et des Stagiaires | In French | → Labour, labour economics → Education |
| CIESM | Commission Internationale pour l'Exploration Scientifique de la mer Méditerranée | In French | → Organizations and associations → Marine research, oceanography |
| CIF | Crédit d'Impôt Formation | In French | → Taxes, duties → Education |
| CIF | Commission Interaméricaine des Femmes (www.oas.org/cim/) = CIM | Comisión Interamericana de Mujeres | In English = IACW | Inter-American Commission of Women | In English = CIM | Comissão Interamericana de Mulheres | In Portuguese |
In French | → Organizations and associations → Feminism |
| CIF | Centre International de Fret | In French | → Transport and postal services |
| CIFACE | Centre International de Formation des Agents Coopérants à l'Étranger | In French | → International relations → Labour, labour economics → Education |
| CIFAD | Centre Interministériel de Formation Anti-Drogue = CIFAD | Centro Interministerial de Formación Antidrogas | In Spanish = CIFAD | Centro Interministerial de Formação Antidrogas | In Portuguese |
In French | → Central administration → Police |
| CIFAP | Centre des Institutions Familiales du Patronat | In French | → Labour, labour economics |
| CIFEJ | Centre International du Film pour l'Enfance et la Jeunesse | In French | → Cinema, movies → Education |
| CIFOGE | Centre d'Information, de Formation et de Gestion d'Entreprise | In French | → Economics |
| CIFRE | Convention Industrielle de Formation par la Recherche | In French | → Research policy → Education |
| CIFTA | Convention Interaméricaine contre la Fabrication et le Trafic illicites d'Armes à feu, munitions, explosifs et autres matériels connexes = CIFTA | Convención Interamericana contra la Fabricación y el Tráfico Ilícitos de Armas de Fuego, Municiones, Explosivos y Otros Materiales Relacionados | In Spanish = CIFTA | Inter-American Convention against the Illicit Manufacturing of and Trafficking in Firearms, Ammunition, Explosives, and Other Related Materials | In English = CIFTA | Convenção Interamericana contra a Fabricação Ilícita e o Tráfico de Armas de Fogo, Munições, Explosivos, e Outros Materiais Relacionados | In Portuguese |
In French | → International relations → Military engineering |
| CIG | Centre d’Ingénierie Générale | In French | → Engineering, technology |
| CIGRE | Conférence Internationale des Grands Réseaux Électriques à haute tension | In French | → Organizations and associations → Electrical engineering |
| CIGREF | Club Informatique des Grandes Entreprises Françaises | In French | → Computer science → Organizations and associations |
| CIGT | Centre d'Ingénierie et de Gestion du Trafic | In French | → Transport and postal services |
| CIH | Centre d’Ingénierie Hydraulique | In French | → Mechanical engineering |
| CIHAM | Centre Interuniversitaire d'Histoire et d'Archéologie Médiévales | In French | → Research institutes → Archeology → History |