| C2C |
Consumer to Consumer |
| CA |
Chartered Accountant |
| CAD |
Com­puter Aided Design |
| CAG |
Comptroller and Auditor General |
| CARE |
Cooperative for American Relief Everywhere |
| CAS |
Consolidated Accounts Statement |
| CASE |
Commission for Alternative Sources of Energy |
| CAT |
Common Admis­sion Test |
| CAZRI |
Central Arid Zone Research Institute |
| CBI |
Central Bureau of Investigation |
| CBM |
Confidence Building Measure |
| CBSE |
Central Board of Secondary Education |
| CCEA |
Cabinet Committee on Economic Affairs |
| CCS |
Cabinet Committee on Security |
| CDAC |
Centre for the Development of Ad­vanced Computing |
| C-DAC |
Centre For Development of Advance Computing |
| CDMA |
Code Division Multiple Access |
| CDRI |
Central Drug Research Institute |
| CDS |
Compulsory Deposit Scheme |
| CEO |
Chief Executive Officer |
| CEPA |
Comprehensive Economic Partnership Agreement |
| CFSL |
Central Forensic Science Laboratory |
| CGI |
Common Gateway Interface |
| CHOGM |
Commonwealth Heads of Government Meeting |
| CIA |
Central Intelligence Agency |
| CID |
Criminal Investigation Department |
| CIS |
Commonwealth of Independent States |
| CISC |
Complex instruction-set computing |
| CISF |
Central Industrial Security Force |
| CITU |
Centre of Indian Trade Unions |
| CNG |
Compressed Natural Gas |
| CNN |
Cable News Network |
| COD |
Central Ordnance Depot |
| COFEPOSA |
Conservation of Foreign Exchange and Prevention of Smuggling Act |
| COMSAT |
Communications Satellite Corporation |
| COPRA |
Consumer Protection Act |
| CORBA |
Common Object Request Broker Architecture |
| COSC |
 Chiefs of Staff Committee |
| CPI(M) |
Communist Party of India / Marxist |
| CPO |
Central Passport Organization |
| CPRI |
Central Power Research Institute |
| CPWD |
Central Public Works Department |
| CRIDA |
 Central Research Institute for Dry Land Agriculture |
| CRIS |
Centre for Railway Information System |
| CRPF |
Central Reserve Police Force |
| CRR |
Cash Reserve Ratio |
| CSIR |
Council of Scientific and Industrial Research |
| CSO |
Central Statistical Organization |
| CTBT |
Comprehensive Test Ban Treaty |
| CTS |
Computerized Tomography Scanner |
| CVC |
Central Vigilance Commission |
| CYMK |
Cyan, Yellow, Magenta, Kinda |
| D.Lit. |
Doctor of Literature |
| D.Litt. |
Doctor of Literature |
| D.Phil. |
Doctor of Philosophy |
| D.Sc |
Doctor of Science |
| DC |
Direct Current |
| DCI |
 Directorate of Criminal Investigation |
| DDT |
Dichloro Diphenyle Tri-chloroethane |
| DFDR |
Digital Flight Data Recorder (Black box) |
| DGMO |
Director General Military Operation |
| DIG |
Deputy Inspector General |
| DISE |
District Information System for Education |
| DM |
District Magistrate |
| DMA |
Direct Memory Access |
| DMICDC |
 Delhi Mumbai Industrial Corridor Development Corporation |
| DMK |
Dravida Munetra Kazhagam |
| DNA |
Deoxyribo-nucleic Acid |
| DPAP |
Drought Prone Area Programme |
| DPC |
Dabhol Power Company |
| DPSA |
Deep Penetration Strike Aircraft |
| DRDO |
Defence Research and Development Organization |
| DTH |
Direct to Home |
| DTP |
Desktop Publishing |
| DVC |
Damodar Valley Corporation |
| DVD |
Digital Versatile/Video Disc. |
