| CRIS | Current Research Information Systems | In English | → Data → Knowledge management |
| CRISD | Computer Resource Integration Support Document | In English | → Computer science |
| CRISD | Computer Resources Integrated Support Document | In English | → Computer science |
| CRISP | Computer Resources Integrated Support Plan | In English | → Computer science |
| CRISTAL | Centre de Recherche en Réseaux, Systèmes et Image Multimédia | In French | → Research institutes → Networks, communication → Computer-based techniques |
| CRIT | Collective Research Initiatives Trust | In English | → Research policy |
| CRN | Collaborative Research Network | In English | → Research policy → Organizations and associations |
| CRN | Comparative Research Network | In English | → Research policy → Organizations and associations |
| CRR | Computer Run Report | In English | → Computer science |
| CRS | Computer Resources Support | In English | → Computer science |
| CRT | Computer Response Time | In English | → Computer science |
| CRTP | Cultural Restoration Tourism Project | In English | → Civilization, culture, progress → Tourism |
| CS&L | Computer Speech & Language | In English | → Serial publications, periodicals → Computer science → Language, linguistics, literature |
| CSA | Coordination and Support Action | In English | → Research policy |
| CSBTS | China State Bureau of Quality and Technical Supervision | In English | → Quality management → Standardization |
| CSC | Computer Software Configuration | In English | → Software |
| CSC | Computer Sciences Corporation (www.csc.com) | In English | → Computer science |
| CSC | Computer Software Component | In English | → Software |
| CSCI | Computer Software Configuration Item | In English | → Software |
| CSCI | Configuration Software Computer Item | In English | → Software |
| CSCMP | Council of Supply Chain Management Professionals | In English | → Organizations and associations → Maintenance and logistics |
| CSCS | Centre for the Study of Culture & Society | In English | → Research institutes → Civilization, culture, progress → Social sciences |
| CSCW | Computer Supported Cooperative Work | In English | → Computer-based techniques |
| CSD | Computer System Director | In English | → Computer science |
| CSDF | Central Source Data File | In English | → Data |
| CSDM | Computer System Diagnostic Manual | In English | → Computer science |
| CSDT | Computer Software Data Tape | In English | → Computer science |
| CSE | Computer Support Equipment | In English | → Computer science |
| CSEd | Computer Science Education | In English | → Serial publications, periodicals → Computer science → Education |
| CSI | Crew Software Interface | In English | → Human-computer interaction |
| CSIR | Computer Software Integration Review | In English | → Software |
| CSIR | Computer Systems Integration Review | In English | → Hardware |
| CSIR | Council of Scientific and Industrial Research | In English | → Research policy |
| CSIR | Council for Scientific and Industrial Research | In English | → Organizations and associations → Research policy |
| CSIRO | Commonwealth Scientific and Industrial Research Organization (www.csiro.au) | In English | → Organizations and associations → International relations → Research policy → Engineering, technology |
| CSK | Committee for Standardization of the Democratic People's Republic of Korea | In English | → Standardization |
| CSL | Computer Status Light | In English | → Computer science |
| CSM | Computer Status Matrix | In English | → Computer science |
| CSMI | Commission Spécialisée des Marchés d'Informatique | In French | → Computer science |
| ČSN | Českých Technických Norem | In Czech | → Standardization |
| CSOM | Computer System Operator's Manual | In English | → Computer science |
| CSP | Certified Special Processor | In English | → Hardware |
| CSPL | Certified Special Processor List | In English | → Hardware |
| CSPU | Core Segment Processing Unit | In English | → Computer science |
| CSQ | Contrôle Statistique de la Qualité | In French | → Data → Statistics |
| CSR | Continuous Speech Recognition | In English | → Computer-based techniques → Linguistics |
| CSRP | Computer and Software Review Panel | In English | → Hardware → Software |
| CSRT | Conseil Supérieur de la Recherche et de la Technologie | In French | → Research policy → Engineering, technology |
| CSS | Cascading Style Sheet | In English | → Document processing |
| CSS | Computer Subsystem | In English | → Computer science |
| CST | Crew Software Trainer | In English | → Software |
| CSTA | Crew Software Training Aid | In English | → Software |
| CSTI | Culture scientifique, technique et industrielle | In French | → Civilization, culture, progress → Mathematics and natural sciences → Applied sciences, technology |
| CSTI | Conseil Stratégique des Technologies de l’Information | In French | → Organizations and associations → Computer science → Telecommunications |
| CSTIT | Computer Speech, Text and Internet Technology | In English | → Software → Internet |
| ČSTN | Česká společnost pro technickou normalizaci | In Czech | → Standardization |
| CSV | Comma Separated Value | In English | → Data |
| CTAAI | Commission Territoriale d'Attribution des Aides à l'Innovation | In French | → Research policy → Engineering, technology |
| CTCI | Contract Technical Compliance Inspection | In English | → Quality management → 3474 |
| CTI | Computer Telephony Integration | In English | → Computer science → Telecommunications |
| CTI | Centre de Techniques Internationales (www.cti-learning.com) | In French | → Education → Management |
| CTI | Couplage Téléphonie Informatique | In French | → Computer science → Telecommunications |
| CTIT | Centrum voor Telematica en Informatica Technologie | In Dutch | → Computer science → Telecommunications |
| CTL | Computational Tree Logic | In English | → Software → Mathematics |
| CtP | Computer to Plate | In English | → Computer science |
| CTR | Computing Tabulating Recording (Corporation) | In English | → Hardware → Knowledge management |
| CTS | Computer Test Set | In English | → Computer science |
| CUC | Computer Usage Control | In English | → Computer science |
| CUDI | Corporación Universitaria para el Desarrollo de Internet | In Spanish | → Computer science → Telecommunications |
| CUG | Cray User Group | In English | → Computer simulation |
| CUI | Common User Interface | In English | → Human-computer interaction |
| CULLT | Club des Utilisateurs des Logiciels Libres en Tunisie | In French | → Organizations and associations → Software |
| CULTe | Club des Utilisateurs de Linux de Toulouse et des environs | In French | → Software → Operating systems |
| CURE | Center for Usability Research and Engineering | In English | → Human-computer interaction |
| CUTM | Chemical Universal Turing Machine | In English | → Computer science → Chemistry |
| CV-ATOD | Centro Virtual de Información sobre Alcohol, Tabaco y otras Drogas = VC-ATOD | Virtual Clearinghouse on Alcohol, Tobacco, and Other Drugs | In English |
In Spanish | → Networks, communication → Medicine |
| CVGIP | Computer Vision Graphics and Image Processing | In English | → Serial publications, periodicals → Computer-based techniques |
| CVIU | Computer Vision and Image Understanding | In English | → Serial publications, periodicals → Computer-based techniques |
| CVS | Concurrent Versions System | In English | → Document processing |
| CWDM | Coarse Wavelength Division Multiplexing | In English | → Networks, communication → Telecommunications |
| CWI | Centrum voor Wiskunde en Informatica | In Dutch | → Computer science |
| CWL | Campus-Wide Login (www.cwl.ubc.ca) | In English | → Networks, communication → Higher education, universities |
| CWM | Closed World Machine | In English | → Software |
| CYS | Cyprus Organization of Standardisation | In English | → Standardization |
| DAC | Digital-To-Analog Converter | In English | → Computer science → Electronics |
| DACP | Data Acquisition, Control, and Processing | In English | → Data |
| DACP | Data Acquisition (and) Control Processor | In English | → Data |
| DACS | Data Acquisition and Control System | In English | → Data |
| DAD | Data Acquisition and Distribution | In English | → Data |
| DADE | Data Acquisition and Documentation Equipment | In English | → Data |
| DAE | Data Acquisition Equipment | In English | → Data |
| DAF | Data Analysis Facility | In English | → Data |
| DAFR | Direction de l'Administration et du Financement de la Recherche | In French | → Research policy → Central administration |
| DAFT | Data Acquisition Frequency Table | In English | → Data |
| DAGM | Deutsche Arbeitsgemeinschaft für Mustererkennung | In German | → Associations → Computer-based techniques |
| DAI | Détection Automatique d'Incident | In French | → Image processing → Transport and postal services |
| DAIS | Data Avionics Information System | In English | → Data → Aeronautics, aircraft |
| DAISY | Dynamisches Auskunfts- und Informationssystem | In German | → Data |
| DAL | Data Acquisition List | In English | → Data |
| DALI | Digits, Architectures et Logiciels Informatiques | In French | → Software → Architecture |
| DAM | Digital Asset Management | In English | → Document processing → Knowledge management |
| DAMA | Data Management Association (www.dama.org) | In English | → Associations → Knowledge management → Data |
| DAML | DARPA Agent Markup Language | In English | → Programming languages → Data |
| DANTE | Delivery of Advanced Network Technology to Europe | In English | → Networks, communication |
| DAOJ | Directory of Open Access Journals | In English | → Libraries → Serial publications, periodicals → Networks, communication |
| DAP | Décodage Acoustico-Phonétique | In French | → Computer-based techniques → Telecommunications → Linguistics |
| DAPA | Direction de l'Architecture et du Patrimoine | In French | → Central administration → Architecture → Civilization, culture, progress |
| DAS | Digital Avionics System | In English | → Computer-based techniques → Aeronautics, aircraft |
| DAU | Data Acquisition Unit | In English | → Data |
| DAV | Data Available | In English | → Data |
| DAVL | Data Available Low | In English | → Data |
| DAWG | Data Access Working Group | In English | → Organizations and associations → Data → Networks, communication |
| DB | Data Buffer | In English | → Data |
| DB | Data Bus | In English | → Data |
| DB | Data Base = BD | Banque de Données | In French |
In English | → Data |
| DBA | Data Base Administrator | In English | → Data → Knowledge management |
| DBC | Data Bus Control | In English | → Data |
| DBC | Data Bus Coupler | In English | → Data |
| DBC | Data Buffer Coupler | In English | → Data |
| DBCR | Data Base Change Request | In English | → Data |
| DBD | Database Driver | In English | → Software → Data |
| DBDD | Data Base Design Document | In English | → Data |
| DBE | Data Bus Element | In English | → Data |
| DBFN | Data Bus File Number | In English | → Data |
| DBG | Data Bus Group | In English | → Data |
| DBGMP | Data Bus Generation and Maintenance Package | In English | → Data |
| DBI | Data Base Interface | In English | → Human-computer interaction → Data |
| DBIA | Data Bus Interface Adapter | In English | → Data |
| DBIA | Data Bus Isolation Amplifier | In English | → Data |
| DBIU | Data Bus Interface Unit | In English | → Data |
| DBKS | Datu-baseak kudeatzeko sistema = DBMS | Data Base Management System | In English = SGBD | Système de Gestion de Base de Données | In French = SŘBD | Systém řízení báze dat | In Czech = SGBD | Sistema de Gestió de Bases de Dades | In Catalan = SMBD | Sistem manajemen basis data | In Indonesian = SUBP | Sustav za upravljanje bazom podataka | In Croatian = SGBD | Sistema de gestión de base de datos | In Spanish = DBMS | Datenbankmanagementsystem | In German |
In Basque | → Data |
| DBM | Data Base Management | In English | → Data |
| DBMS | Data Base Management Software | In English | → Software → Data |
| DBMS | Data Base Management System = DBKS, SGBD, SŘBD, SMBD, SUBP (look above) |
In English | → Data |
| DBMS | Datenbankmanagementsystem = DBKS, SGBD, SŘBD, SMBD, SUBP (look above) |
In German | → Data |
| DBN | Data Bus Network | In English | → Data → Networks, communication |
| DBRN | Data Bank Release Notice | In English | → Data |
| DBS | Data Bus Simulator | In English | → Data |
| DBS | Data Base System | In English | → Data |
| DBUR | Data Bank Update Request | In English | → Data |
| DBW | Data Bus Wire | In English | → Data |
| DC | Data Coordinator | In English | → Data |
| DC | Data Control | In English | → Data |
| DC | Dublin Core | In English | → Libraries → Data |
| DCARS | Data Collection And Reduction System | In English | → Data |
| DCAS | Data Collection and Analysis System | In English | → Data |
| DCB | Data Control Board | In English | → Data |
| DCC | Data Computation Complex | In English | → Computer science |
| DCDS | Distributed Computing Design System | In English | → Computer science |
| DCE | Data Circuit-terminating Equipment | In English | → Data → Telecommunications |
| DCEP | Data Collection and Evaluation Plan | In English | → Data |
| DCF | Data Control Facility | In English | → Data |
| DCIB | Data Communication Input Buffer | In English | → Data |
| DCIU | Digital Control and Interface Unit | In English | → Human-computer interaction |
| DCM | Data and Configuration Management | In English | → Data |
| DCM | Data and Control Management | In English | → Data |
| DCM | Display and Control Module | In English | → Human-computer interaction |
| DCM | DECOM Control Memory | In English | → Memories |
| DCM | Decommutator Control Memory | In English | → Memories |
| DCM | Dialogue Communication Multimédia (www.dcminteractive.com) | In French | → Computer science → Graphic industries, printing, publishing |
| DCMES | Dublin Core Metadata Element Set | In English | → Libraries → Networks, communication |
| DCMI | Dublin Core Metadata Initiative | In English | → Libraries → Computer science |
| DCN | Data Change Notice | In English | → Data |
| DCR | Data Change Request | In English | → Data |
| DCS | Data Communication System | In English | → Data |
| DCS | Data Conditioning System | In English | → Data |
| DCSU | Digital Computer Switching Unit | In English | → Computer science |
| DCU | Digital Computer Unit | In English | → Computer science |
| DD | Data Dictionary | In English | → Data → Dictionaries |
| DD | Directives Documentation | In English | → Knowledge management → Libraries |
| DDA | Data Distribution Assembly | In English | → Data |
| DDDL | Digital Data Downlink | In English | → Data |
| DDDS | Digital Data Distribution System | In English | → Data |
| DDE | Dynamic Data Exchange | In French | → Data |
| DDEX | Digital Data Exchange | In English | → Data |
| DDI | Discrete Data Input | In English | → Data |
| DDL | Data Downlink | In English | → Data |
| DDL | Data Base Definition Language | In English | → Computer science |
| DDL | Display Description Language | In English | → Human-computer interaction |
| DDM | Discrete Data Management | In English | → Data |
| DDM | Distributed Data Manager | In English | → Data |
| DDM | Data Display Module | In English | → Human-computer interaction → Data |
| DDN | Defense Data Network | In English | → Networks, communication → Military affairs |
| DDO | Discrete Data Output | In English | → Data |
| DDP | Digital Data Processing | In English | → Data |
| DDP | Data Distribution Panel | In English | → Data |
| DDP | Data Distribution Plan | In English | → Data |
| DDPC | Digital Data Processing Center | In English | → Data |
| DDPC | Digital Data Processing Complex | In English | → Data |
| DDPS | Digital Data Processing System | In English | → Data |
| DDR | Data Display and Review | In English | → Data |
| DDR | Data Display Room | In English | → Data |
| DDS | Documentation Distribution System | In English | → Knowledge management → Libraries |
| DDU | Data Display Unit | In English | → Human-computer interaction → Data |
| DEEIT | Division de l'Électricité, de l'Électromécanique, de l'Informatique et des Télécommunications | In French | → Computer science → Electrical engineering → Electronics → 65 |
| DEI | Direction de l'Électronique et de l'Informatique | In French | → Computer science → Electronics |
| DELMIA | Digital Enterprise Lean Manufacturing Interactive Application | In English | → Computer-based techniques → Engineering, technology |
| DELNI | Digital Ethernet Local Network Interconnect | In English | → Computer science |
| DELOG | Design Engineering Logistics | In English | → Maintenance and logistics |
| DEOS | Data Enrollment Online Server | In English | → Networks, communication |
|