| BMP | Bulletin des Marchés Publics | In French | |
| BMS | Battle Management Simulation | In English | → 355 |
| BMU | Bundesministerium für Umwelt (www.bmu.de) | In German | → Central administration → Nature |
| BMWA | Bundesministerium für Wirtschaft und Arbeit (www.bmwa.gv.at) | In German | → Central administration → Labour, labour economics → Trade |
| BMWi | Bundesministerium für Wirtschaft (und Technologie) | In German | → Central administration → Economics → Engineering, technology |
| BMZ | Bundesministerium für wirtschaftliche Zusammenarbeit und Entwicklung | In German | → International relations → Central administration → Development |
| BNEE | Brigade Nationale d'Enquêtes Économiques | In French | → Police → Economics |
| BO | Bulletin Officiel | In French | → Serial publications, periodicals |
| BOAMP | Bulletin Officiel d'Annonces des Marchés Publics | In French | → Serial publications, periodicals |
| BOAMP | Bulletin Officiel des Annonces des Marchés Publics | In French | → Serial publications, periodicals |
| BOCC | Bulletin Officiel des Conventions Collectives | In French | → Serial publications, periodicals → Labour, labour economics |
| BOCCFR | Bulletin Officiel de la Concurrence, de la Consommation et de la Répression des Fraudes | In French | → Serial publications, periodicals |
| BODGI | Bulletin Officiel de la Direction Générale des Impôts | In French | → Serial publications, periodicals → Central administration → Taxes, duties |
| BOEN | Bulletin Officiel de l'Éducation Nationale | In French | → Serial publications, periodicals → Central administration → Education |
| BOME | Bulletin Officiel du Ministère de l'Équipement | In French | → Serial publications, periodicals → Central administration |
| BOMEAT | Bulletin Officiel du Ministère de l'Équipement et de l'Aménagement du Territoire | In French | → Serial publications, periodicals → Central administration → Regional planning |
| BOMECV | Bulletin Officiel du Ministère de l'Environnement et du Cadre de Vie | In French | → Serial publications, periodicals → Central administration → Nature and society |
| BOMEL | Bulletin Officiel du Ministère de l'Équipement et du Logement | In French | → Serial publications, periodicals → Central administration → Accommodation |
| BOMET | Bulletin Officiel du Ministère de l'Équipement et des Transports | In French | → Serial publications, periodicals → Central administration → Transport and postal services |
| BOMULTE | Bulletin Officiel du Ministère de l'Urbanisme, du Logement, des Transports et de l'Environnement | In French | → Serial publications, periodicals → Central administration → Transport and postal services → Nature and society, |
| BREC | Brigade Régionale d'Enquête et de Coordination | In French | → Police |
| BRF | Brigade des Réseaux Férrés | In French | → Transport and postal services |
| BRI | Brigade de Recherches et d'Intervention | In French | → Police |
| BSI | Bundesamt für Sicherheit in der Informationstechnik | In German | → Computer science → Central administration |
| BSV | Bundesschuldenverwaltung | In German | |
| BVA | Bundesvergabeamt | In German | → Central administration |
| BVE | Batallón Vasco Español | In Spanish | → Organizations and associations → 355 |
| BWV | Bundeswertpapierverwaltung | In German | |
| BWZ | Bundeswarnzentrale | In German | → Central administration |
| CAA | Civil Aeronautics Administration | In English | → Aeronautics, aircraft |
| CADA | Commission d'Accès aux Documents Administratifs | In French | |
| CADEP | Caisse d'Amortissement de la Dette Publique | In French | → Finance |
| CADIS | Centre d'Analyse et d'Intervention Sociologiques | In French | → Police |
| CAECL | Caisse d'Aide à l'Équipement des Collectivités Locales | In French | → Finance |
| CAFB | Chanute Air Force Base | In English | → 358 |
| CAPI | Comissão de Administração Pública Internacional = CAPI | Comisión de Administración Pública Internacional | In Spanish = ICSC | International Civil Service Commission | In English = CFPI | Commission de la Fonction Publique Internationale | In French |
In Portuguese | → United Nations |
| CAPI | Comisión de Administración Pública Internacional = ICSC, CFPI (look above) |
In Spanish | → United Nations |
| CAPS | Communauté d'Agglomération du Plateau de Saclay (www.saclay-scientipole.org) | In French | → 351 |
| CAVOM | Caisse d'Allocation Vieillesse des Officiers Ministériels | In French | → Labour, labour economics → Central administration → Insurance |
| CCAFS | Cape Canaveral Air Force Station | In English | → 358 → Aeronautics, aircraft |
| CCAG | Cahier des Clauses Administratives Générales | In French | |
| CCAP | Cahier des Clauses Administratives Particulières | In French | |
| CCATP | Cahier des Clauses Administratives et Techniques Particulières | In French | |
| CCCPA | Cleveland-Cuyahoga County Port Authority | In English | → Municipal administration → Transport and postal services |
| CCPA | Communauté de Communes de Plabennec et des Abers | In French | → Municipal administration |
| CCPA | Communauté de Communes du Pays de l'Arbresle | In French | → Municipal administration |
| CCTG | Cahier des Clauses Techniques Générales | In French | |
| CCTP | Cahier des Clauses Techniques Particulières | In French | |
| CD | Commissaire Divisionnaire | In French | → Police |
| CDC | Collins Defense Communications | In English | → 355 → Telecommunications |
| CDCD | Collins Defense Communications Division | In English | → 355 → Telecommunications |
| CDOA | Commission Départementale d’Organisation Agricole | In French | → Regional administration → Agricultural sciences |
| CED | Comunità Europea di Difesa = EDC | European Defence Community | In English = EVG | Europäische Verteidigungsgemeinschaft | In German = CED | Communauté Européenne de Défense | In French = EDG | Europese Defensie Gemeenschap | In Dutch = EWO | Europejska Wspólnota Obronna | In Polish = CED | Comunidade Europeia de Defesa | In Portuguese |
In Italian | → European Union → 355 |
| CED | Comunidade Europeia de Defesa = EDC, EVG, EDG, EWO (look above) |
In Portuguese | → European Union → 355 |
| CED | Communauté Européenne de Défense = EDC, EVG, EDG, EWO (look above) |
In French | → European Union → 355 |
| CEMT | Conferinţa Europeană a Miniştrilor de Transport | In Romanian | → International relations → Central administration → Transport and postal services |
| CENAM | Centre National d'Administration et de Magistrature | In French | → Law, jurisprudence |
| CEPOL | Collège européen de police | In French | → Police → International relations |
| CERFA | Centre d'Enregistrement et de Révision des Formulaires Administratifs | In French | |
| CERSA | Centre d'Études et de Recherches de Sciences Administratives | In French | |
| CES | Consiliul Economic şi Social | In English | → Economics |
| CESIA | Centre d'Études des Systèmes d'Information des Administrations | In French | → Computer science → Telecommunications |
| CFAC | Conferência das Forças Armadas da América Central = CFAC | Conferencia de las Fuerzas Armadas Centroamericanas | In Portuguese = CFAC | Conférence des Forces Armées Centraméricaines | In French |
In Portuguese | → International relations → 355 |
| CFAC | Conferencia de las Fuerzas Armadas Centroamericanas = (look above) |
In Portuguese | → International relations → 355 |
| CFAC | Conférence des Forces Armées Centraméricaines = (look above) |
In French | → International relations → 355 |
| CFE | Comisión Federal de Electricidad | In Spanish | → Organizations and associations → Central administration → Electrical engineering |
| CFEP | Chambre des Fonctionnaires et Employés Publics | In French | → Organizations and associations → Labour, labour economics |
| CFPC | Centre de Formation des Personnels Communaux | In French | → Labour, labour economics |
| CFPI | Commission de la Fonction Publique Internationale = CAPI, ICSC (look above) |
In French | → United Nations |
| CFR | Code of Federal Regulations | In English | → Central administration |
| CFSP | Common Foreign and Security Policy = GASP | Gemeinsame Außen- und Sicherheitspolitik | In German = WPZiB | Wspólna polityka zagraniczna i bezpieczeństwa | In Polish = PESC | Politique Étrangère et de Sécurité Commune | In French = GBVB | Gemeenschappelijk Buitenlands en Veiligheidsbeleid | In Dutch = PESC | Politica Estera e di Sicurezza Comune | In Italian = SZPB | Společná zahraniční a bezpečnostní politika | In Czech = СЗБП | Спільна зовнішня та безпекова політика | In Ukrainian = SZPB | Spoločná zahraničná a bezpečnostná politika | In Slovak = PESC | Política Externa e de Segurança Comum | In Portuguese = FUSP | Felles utenriks- og sikkerhetspolitikk | In Norwegian |
In English | → European Union → International relations → Police |
| CGCT | Code Général des Collectivités Territoriales | In French | → Law, jurisprudence → Municipal administration → Regional administration |
| CGP | Commissariat Général du Plan | In French | → Central administration |
| CGPM | Commission Générale des Pêches pour la Méditerranée | In French | → Fishing, hunting |
| CGSAH | Conference Group for Social and Administrative History | In English | → Organizations and associations → Sociology → History |
| CIA | Central Intelligence Agency | In English | → Central administration → Polemology |
| 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 |
| CICID | Comité Interministériel de la Coopération Internationale et du Développement | In French | → Central administration → International relations → Development |
| CICONA | Comissão Interparlamentar Centro-americana contra a Corrupção e o Narcotráfico = CICONA | Comisión Interparlamentaria Centroamericana contra la Corrupción y la Narcoactividad | In Spanish |
In English | → Parliaments, representation → Police |
| CICONA | Comisión Interparlamentaria Centroamericana contra la Corrupción y la Narcoactividad = (look above) |
In Spanish | → Parliaments, representation → Police |
| CICS | Commission Interministérielle de Coordination des Salaires | In French | → Labour, labour economics → Central administration |
| CIDA | Canadian International Development Agency = ACDI | Agence Canadienne de Développement International | In French |
In English | → Central administration → Development |
| CIEM | Centre Intégré d’Évaluation des Menaces | In French | → Polemology → Police |
| CIFAD | Centro Interministerial de Formación Antidrogas = CIFAD | Centre Interministériel de Formation Anti-Drogue | In French = CIFAD | Centro Interministerial de Formação Antidrogas | In Portuguese |
In Spanish | → Central administration → Police |
| CIFAD | Centro Interministerial de Formação Antidrogas = (look above) |
In Portuguese | → Central administration → Police |
| CIFAD | Centre Interministériel de Formation Anti-Drogue = (look above) |
In French | → Central administration → Police |
| CIIBA | Comité Interministériel de l'Informatique et de la Bureautique dans l'Administration | In French | → Computer science → Central administration |
| CIINB | Commission Interministérielle des Installations Nucléaires de Base | In French | → Organizations and associations → Central administration → Nuclear technology |
| CILOF | Compagnie Immobilière pour le Logement des Fonctionnaires | In French | → Accommodation |
| CIM | Comité Interministériel | In French | → Central administration |
| CIMIR | Commission Interministérielle des Matériels d'Imprimerie et de Reprographie | In French | → Central administration → Graphic industries, printing, publishing |
| CIMT | Conferencia Interamericana de Ministros del Trabajo = CIMT | Conferência Interamericana de Ministros do Trabalho | In Portuguese |
In Spanish | → Central administration → Labour, labour economics |
| CIMT | Conferência Interamericana de Ministros do Trabalho = (look above) |
In Portuguese | → Central administration → Labour, labour economics |
| CINCAD | Commander-In-Chief, Air Defense | In English | → 358 |
| CIRA | Centre Interministériel de Renseignements Administratifs | In French | → Central administration |
| CIRAT | Centre d'Information et de Recrutement de l'Armée de Terre | In French | → Labour, labour economics → 355 |
| CIRI | Comité Interministériel de Restructuration Industrielle | In French | → Central administration → Industry, industrial policy |
| CIRIT | Comissió Interdepartemental de Recreca i Innovació Tecnològica | In Spanish | → Research policy |
| CIRST | Comité Interministériel de la Recherche Scientifique et Technique | In French | → Central administration → Research policy |
| CISI | Comité Interministériel pour la Société de l'Information | In French | → Central administration → Computer science → Telecommunications |
| CISM | Conseil International du Sport Militaire | In French | → Organizations and associations → 355 → Sport, physical exercises |
| CISPEL | Confederazione Italiana dei Servizi Pubblici degli Enti Locali | In Italian | → Organizations and associations → Municipal administration |
| 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 |
| CJFLCC | Coalition Joint Forces Land Component Command | In English | → 355 |
| CLAD | Centro Latino-americano de Administração para o Desenvolvimento (www.clad.org.ve) = CLAD | Centro Latinoamericano de Administración para el Desarrollo | In Spanish = CLAD | Centre Latino-américain d'Administration pour le Développement | In French |
In Portuguese | → Development |
| CLAD | Centre Latino-américain d'Administration pour le Développement (www.clad.org.ve) = (look above) |
In French | → Development |
| CLAD | Centro Latinoamericano de Administración para el Desarrollo (www.clad.org.ve) = (look above) |
In Spanish | → Development |
| CMP | Code des Marchés Publics | In French | → Law, jurisprudence |
| CMR | Comitetul Naţional Român | In Romanian | |
| CNADT | Conseil National d'Aménagement et de Développement du Territoire | In French | → Regional planning |
| CNAS | Casa Naţională de Asigurări de Sănătate | In Romanian | → Medicine |
| CNC | Conseil National de la Communication | In French | → Organizations and associations → 359 |
| CNDC | Comisión Nacional de Defensa de la Competencia | In Spanish | → Central administration → Trade |
| CNEA | Comisión Nacional de Energía Atómica (www.cnea.gov.ar) | In Spanish | → Central administration → Nuclear technology |
| CNFPT | Centre National de la Fonction Publique Territoriale | In French | → Education |
| CNI | Carte Nationale d'Identité | In French | |
| CNMHS | Caisse Nationale des Monuments Historiques et des Sites | In French | → History |
| CNMSS | Caisse Nationale Militaire de Sécurité Sociale | In French | → Insurance |
| CNPADAS | Casa Naţională de Pensii şi Alte Drepturi de Asigurări Sociale | In Romanian | → Social welfare |
| CNPAS | Casa Naţională de Pensii şi Alte Drepturi de Asigurări Sociale | In Romanian | → Social aid |
| CNR-CME | Comitetul Naţional Român al Consiliului Mondial al Energiei | In Romanian | → Energy economics |
| CNRACL | Caisse Nationale de Retraite des Agents des Collectivités Locales | In French | → Labour, labour economics → Insurance |
| CNS | Corporation for National Service (www.cns.gov) | In English | |
| CNSS | Caisse Nationale de Sécurité Sociale | In French | → Central administration → Insurance |
| CODEC | Comité Départemental d'Examen des Comptes des Organismes de Sécurité Sociale | In French | → Insurance |
| CODES | Comisia consultativă interministerială în domeniul egalităţii de şanse între femei şi bărbaţi | In Romanian | → Central administration |
| CODIS | Centre Opérationnel Départemental d'Incendie et de Secours | In French | |
| COMAC | Comité d’Action Militaire | In French | → 355 |
| CONAD | Congresso Nacional de Administração | In Portuguese | → Congresses |
| COPS | Comité politique et de sécurité | In French | → Politics → 355 |
| CORS | Centrum Ogólnopolskich Rejestrów Sądowych i Informatyzacji Resortu (www.cors.gov.pl) | In Polish | → Central administration → Law, jurisprudence |
| COTAM | Commandement du Transport Aérien Militaire | In French | → Military engineering → Transport and postal services |
| COTOREP | Commission Technique d'Orientation et de Reclassement Professionnel | In French | → Labour, labour economics |
| CPER | Contrats de plan État-région | In French | → Internal policy |
| CPER | Contrat de Projets État/Région | In French | |
| CPER | Contrat de Plan État-Région | In French | |
| CPS | Crown Prosecution Service | In English | |
| CRCI | Commission Régionale de Conciliation et d'Indemnisation | In French | |
| CRIF | Conseil Régional d'Ile-de-France | In French | |
| CRS | Compagnie Républicaine de Sécurité | In French | → Police |
| CRSN | Cadre de Référence Stratégique National | In French | → Central administration |
| CSA | Contrôle Sanction Automatisé | In French | → Transport and postal services |
| CSFPE | Conseil Supérieur de la Fonction Publique de l'État | In French | → Central administration |
| CSN | Coopérant du Service National | In French | → Labour, labour economics |
| CTSA | Central Tibetan Schools Administration | In English | → Education |
| CUDL | Communauté Urbaine de Lille | In French | → Regional planning |
| CUH | Code de l'Urbanisme et de l'Habitation | In French | → Building → Regional planning |
| CUS | Communauté Urbaine de Strasbourg | In French | → Municipal administration |
| DAB | Defense Acquisition Board | In English | → 355 |
| DABM | Defense Against Ballistic Missiles | In English | → 355 → Military engineering |
| DAECL | Délégation pour l’Action Extérieure des Collectivités Locales | In French | → Municipal administration |
| DAEI | Direction des Affaires Économiques et Internationales | In French | → Central administration → International relations |
| DAFR | Direction de l'Administration et du Financement de la Recherche | In French | → Research policy → Central administration |
| DAG | Direction de l'Administration Générale | In French | → Central administration |
| DAGE | Direction de l'Administration Générale et de l'Équipement | In French | → Central administration |
| DAGIC | Direction des Affaires Générales, Internationales et de Coopération | In French | → International relations |
| DAGPB | Direction de l'Administration Générale, du Personnel et du Budget | In French | → Labour, labour economics → Central administration |
| DAPA | Direction de l'Architecture et du Patrimoine | In French | → Central administration → Architecture → Civilization, culture, progress |
| DAPN | Direction de l'Administration de la Police Nationale | In French | → Police → Central administration |
| DAR | Defense Acquisition Regulation | In English | → 355 |
| DAR | Délégation à l’Action Régionale | In French | → Central administration |
| DARES | Direction de l'Animation, de la Recherche, des Études et des Statistiques | In French | → Social sciences |
| DARPA | Defense Advanced Research Projects Agency | In English | → 355 |
| DASES | Direction de l'Action sociale, de l'Enfance et de la Santé | In French | → Social welfare → Education → Medicine |
| DASS | Direction de l'Action Sanitaire et Sociale | In French | → Social welfare → Medicine |
| DAT | Direction des Armements Terrestres | In French | → Military engineering |
| DATAR | Délégation à l'Aménagement du Territoire et à l'Action Régionale | In French | → Regional planning |
| DATAR | Délégation à l’Aménagement du Territoire et à l’Action Régionale | In French | → Central administration |
| DBB | Deutscher Beamtenbund | In German | → Organizations and associations → Labour, labour economics |
| DBLP | Direction des Bibliothèques et de la Lecture Publique | In French | → Libraries |
| DCA | Defense Communications Agency | In English | → 355 → Telecommunications |
| DCA | Defense Communication Agency | In English | → 355 → Telecommunications |
| DCAA | Defense Contract Audit Agency | In English | → 355 → Military engineering |
| DCAN | Direction des Constructions et Armes navales | In French | → Military engineering |
| DCAS | Defense Contract Administration Services | In English | → 3474 → 355 |
| DCASMA | Defense Contract Administration Services Management Area | In English | → 3474 → 355 |
| DCASR | Defense Contract Administration Services Region | In English | → 3474 → 355 |
| DCCAT | Direction Centrale du Commissariat de l'Armée de Terre | In French | |
| DCCRS | Direction Centrale des Compagnies Républicaines de Sécurité | In French | → Police → Central administration |
| DCE | Departamentul pentru Comert Exterior | In German | → Central administration → Trade |
| DCM | Distinguished Conduct Medal | In English | → 355 |
| DCMAA | Direction Centrale du Matériel de l'Armée de l'Air | In French | → Military engineering |
| DCPAF | Direction Centrale de la Police aux Frontières | In French | → Police → Central administration |
| DCPJ | Direction Centrale de la Police Judiciaire | In French | → Police → Central administration |
| DCRG | Direction Centrale des Renseignements Généraux | In French | → Central administration |
| DCSP | Direction Centrale de la Sécurité Publique | In French | → Police → Central administration |
| DCSSA | Direction Centrale du Service de Santé des Armées | In French | → Medicine |
| DDA | Direction Départementale de l'Agriculture | In French | → Agricultural sciences |
| DDAF | Direction Départementale de l'Agriculture et de la Forêt | In French | → Regional administration → Agricultural sciences → Forestry |
| DDASS | Direction Départementale des Affaires Sanitaires et Sociales | In French | → Regional administration → Social welfare → Medicine |
| DDC | Defense Documentation Center | In English | → Libraries → 355 → Military engineering |
| DDCCRF | Direction Départementale de la Concurrence, de la Consommation et de la Répression des Fraudes | In French | → Economics → Consumerism |
| DDE | Direction Départementale de l'Équipement | In French | → Regional administration → Civil engineering → Civil engineering and land transport |
| DDEC | Dotation Départementale d'Équipement des Collèges | In French | → Education |
| DDEN | Direction Départementale de l'Environnement et de la Nature | In French | → Regional administration → Nature → Environment, environmental sciences |
| DDJS | Direction Départementale de la Jeunesse et des Sports | In French | → Education → Sport, physical exercises |
| DDN | Defense Data Network | In English | → Networks, communication → 355 |