| Short Name | Full Form or Abbreviations |
| 3G | Third Generation |
| AAA | Asian Athletics Association |
| AAFI | The Amateur Athletics Federation of India |
| AC | Ante Christum (Before Christ), Ashok Chakra, Air Conditioner |
| ADB | Asian Development Bank |
| AFI | Athletics Federation of India |
| AFMC | Armed Forces Medical College |
| AI | Artifical Intelligence, Air India |
| AICTE | All India Council for Technical Education |
| AIFF | All India Football Federation |
| AIIMS | All India Institute of Medical Science |
| AITUC | All India Trade Union Congress |
| ALGOL | Algebric Oriented Language |
| AM | Ante Meridiem (before Noon), Amplitude Modulation |
| APEC | Asia Pacific Economic Cooperation |
| ARPANET | Advanced Research Project Agency Network |
| ASCII | American Standard Code for Information Interchange |
| ASEAN | Association of South East Asian Nations |
| ASLV | Augmented Satellite Launch Vehicle |
| AT&T | American Telegraphic and Telephone Co. Ltd. |
| ATC | Air Traffic Control |
| ATM | Automated Teller Machine |
| AVSM | Ati Vishisht Seva Medal |
| B2B | Busines to Business |
| B2C | Business to Consumer |
| BARC | Bhabha Atomic Research Centre |
| BBC | British Broadcasting Corporation |
| BBS | Bulletin Board Service |
| BC | Before Christ |
| BHEL | Bharat Heavy Electri-cals Ltd |
| BIOS | Basic Input Output System |
| BIT | Binary Digit |
| BPL | Below Poverty Line |
| BPO | Business Process Outsourcing |
| BPR | Business Process Re-engineering |
| bps | bytes per second |
| BSE | Bombay Stock Exchange |
| BSF | Border Security Force |
| BSNL | Bharat Sanchar Nigam Limited |
| C2C | Consumer to Consumer |
| CA | Chartered Accountant |
| CAD | Computer Aided Design |
| CAT | Common Admission Test |
| CBI | Central Bureau of Investigation |
| CBSE | Central Board of Secondary Education |
| CDAC | Centre for the Development of Advanced Computing |
| CDMA | Code Division Multiple Access |
| CEO | Chief Executive Officer |
| CFSL | Central Forensic Science Laboratory |
| CGI | Common Gateway Interface |
| CIA | Central Intelligence Agency |
| CID | Criminal Investigation Department |
| CISC | Complex instruction-set computing |
| CITU | Centre of Indian Trade Unions |
| CNN | Cable News Network |
| COMSAT | Communications Satellite Corporation |
| COPRA | Consumer Protection Act |
| CORBA | Common Object Request Broker Architecture |
| CPI(M) | Communist Party of India / Marxist |
| CPWD | Central Public Works Department |
| CRIS | Centre for Railway Information System |
| CSIR | Council of Scientific and Industrial Research |
| CTBT | Comprehensive Test Ban Treaty |
| CYMK | Cyan, Yellow, Magenta, Kinda |
| D.Litt. | Doctor of Literature |
| D.Phil. | Doctor of Philosophy |
| D.Sc | Doctor of Science |
| DC | Direct Current |
| DIG | Deputy Inspector General |
| DMA | Direct Memory Access |
| DMK | Dravida Munetra Kazhagam |
| DNA | Deoxyribo-nucleic Acid |
| DTP | Desktop Publishing |
| DVC | Damodar Valley Corporation |
| DVD | Digital Versatile/Video Disc |
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