| 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 |
| E & OE | Errors and Omissions Excepted |
| EDI | Electronic Data Interchange |
| EIS | Executive Information System |
| E-MAIL | Electronic Mailing |
| EMI | Equated Monthly Instalments |
| ENIAC | Electronic Numerical Integrator and Calculator |
| ENT | Ear, Nose and Throat |
| EOF | end of file |
| EOT | Eastern Daylight Time |
| EPABX | Electronic Private Automatic Branch Exchange |
| ERNET | Educational and Research Network |
| FAQ | Frequently Asked Question |
| FBI | Federal Bureau of Investigation |
| FBT | Fringe Benefit Tax |
| FBTR | Fast Breeder Test Reactor |
| FBW | Fly-By-Wire |
| FCI | Food Corporation of India; Fertilizer Corporation of India |
| FDI | Foreign Direct Investment |
| FEMA | Foreign Exchange Management Act |
| FICCI | Federation of Indian Chambers of Commerce and Industry |
| FIFA | International Football Federation (Federation Internationale de Football Association) |
| FIR | First Information Report |
| FM | Frequency modulation |
| FRCP | Fellow of the Royal College of Physicians |
| FRCS | Fellow of the Royal College of Surgeons |
| FRCS | Fellow of the Royal Geographical Society |
| FRS | Fellow of the Royal Society |
| G7 | Group of Seven (US, UK, Germany, France, Italy, japan and Canada) G8 includes G7 plus Russia |
| GATE | Graduate Aptitude Test in Engineering |
| GATS | General Agreement on Trade and Services |
| GDP | Gross Domestic Product |
| GMAT | Graduate Management Admission Test |
| GMT | Greenwich Mean Time |
| GSLV | Geo-Synchronous Satellite Launch Vehicle |
| GSM | Global System for Mobile Communications |
| GSP | Generalised System Preference |
| GUI | Graphical User Interface |
| HAL | Hindustan Aeronautics Limited. |
| HIV | Human Immunodeficiency Virus |
| HMI | Himalayan Mountaineering Institute |
| HTML | Hyper Text Markup Language |
| HUDCO | Housing and Urban Development Corp. |
| HVAC | Heating, Ventilating and Air Conditioning |
| i.e. | id est (that is) |
| IAAI | International Airport Authority of India |
| IAEA | International Atomic Energy Agency |
| IARI | Indian Agricultural Research Institute |
| IAS | Indian Administrative Service |
| IATA | International Air Transport Association |
| IBM | International Business Machines |
| ICSE | Indian Certificate of Secondary Education |
| ICU | Intensive Care Unit |
| ICWA | Indian Council of World Affairs |
| IDA | International Development Agency |
| IDBI | Industrial Development Bank of India |
| IEEE | Institute of Electronics and Electrical Engineers |
| IELTS | International English Language Testing System |
| IFC | Industrial Finance Corporation, International Finance Corporation |
| IFS | Indian Foreign Service; Indian Forest Service |
| IGNOU | Indira Gandhi National Open University |
| IIPA | Indian Institute of Public Administration |
| IISCO | Indian Iron and Steel Company |
| IISS | International Institute of Strategic Studies |
| IIT | Indian Institute of Technology |
| ILA | Indian Library Association |
| ILO | International Labour Organisation |
| IMAP | Internet Mail Access Protocol |
| IMF | International Monetary Fund |
| INA | Indian National Army |
| INTUC | Indian National Trade Union Congress |
| IOC | Indian Oil Corporation |
| IP | Internet Protocol |
| IPC | Indian Penal Code |
| IPCL | Indian Petro-Chemicals Corporation Ltd |
| IPI | International Press Institute |
| IPO | Initial Public Offering |
| IPS | Indian Police Service; Inter Press Service |
| IQ | Intelligence Quotient |
| IRC | International Red Cross |
| IRDP | Integrated Rural Development Programme |
| IRS | Indian Revenue Service |
| ISBN | International Standard Book Number |
| ISDN | Integrated Services Digital Network |
| ISI | Indian Standards Institution; Inter Services Intelligence |
| ISKCON | International Society for Krishna Consciousness |
| ISO | International Standards Organisation |
| ISRO | Indian Space Research Organisation |
| IST | Indian Standard Time |
| ITBP | Indo-Tibetan Border Police |
| ITES | Information Technology enabled services |
| ITI | Indian Telephone Industries<br> Industrial Training Institute |
| ITU | International Telecommunication Union |
| IVF | In-Vitro Fertilisation |
| IVM | In-vitro Maturation |
| JCO | Junior Commissioned Officer |
| JEE | Joint Entrance Examination |
| JPEG | Joint Photographic Expert Group |
| LASER | Light Amplification by Stimulated Emission of Radiation |
| LCA | Light Combat Aircraft |
| LCD | Liquid Crystal Display Least Common Denominator |
| LCM | Lowest Common Multiple |
| LIC | Life Insurance Corporation (of India) |
| LLB | Bachelor of Laws |
| LMC | Large Megallanic Cloud |
| LTTE | Liberation Tigers of Tamil Elam |
| M.A. | Magisiter Artium (Master of Arts) |
| M.D | Doctor of Medicine |
| MBA | Master of Business Administration |
| MBBS | Bachelor of Medicine and Bachelor of Surgery |
| MCC | Marylebone Cricket Club |
| MCI | Medical Council of India |
| MICR | Magnetic ink character recognition |
| MIDI | Musical Instrument Digital Interface |
| MIPS | Million Instructions per Second |
| MIT | Massachusetts Institute of Technology; Master Instruction Tape |
| MLA | Member of Legislative Assembly |
| MNC | Multi-National Corporation |
| MODEM | modulator demodulator |
| MP | Member of Parliament; Madhya Pradesh |
| MPEG | Motion Picture Experts Group |
| MRCP | Member of the Royal College of Physicians |
| MTCR | Missile Technology Control Regime |
| MVC | Maha Vir Chakra |
| NAAC | National Assessment and Accreditation Council |
| NABARD | National Bank for Agriculture and Rural Development |
| NAFED | National Agricultural Co-operative Marketing Federation |
| NALCO | National Aluminium Company Ltd. |
| NASA | National Aeronautics and Space Administration |
| NASDAQ | National Association of Securities Dealers Automated Quotation |
| NASSCOM | National Association of Software and Service Companies |
| NATO | North Atlantic Treaty Organisation |
| NAV | Net Asset Value |
| NCERT | National Council of Educational Research and Training |
| NCSA | National Centre for Supercomputing Applications; National Computer Security Association |
| NDA | National Defence Academy |
| NOC | No Objection Certificate |
| NPA | Non-performing Assets |
| NPT | Nuclear Non-Proliferation Treaty |
| NRF | National Renewal Fund |
| NSUI | National Students Union of India |
| NTPC | National Thermal Power Corporation |
| OBC | Other Backward Classes |
| OCR | Optical Character Recognition |
| ONGC | Oil and Natural Gas Corporation |
| OOP | Object Oriented Programme |
| OPEC | Organisation of Petroleum Exporting Countries |
| OSCAR | Orbiting Satellite Carrying Amateur Radio |
| PAN | Permanent Account Number |
| Ph.D. | Doctor of Philosophy (Philosophiae Doctor) |
| PIL | Public Interest Litigation |
| PIN | Postal Index Number |
| PSLV | Polar Satellite Launch Vehicle |
| PWD | Public Works Department; |
| R&D | Research and Development |
| RADAR | Radio Detecting and Ranging |
| RAM | Random Access Memory |
| RAW | Research & Analysis Wing |
| RBI | Reserve Bank of India |
| RDX | Research Department Explosive (Cyclotrim-ethylin Trinitrate) |
| RISC | Reduced instruction-set computing |
| RNA | Ribonucleic acid |
| ROM | Read Only Memory |
| RPM | Revolutions Per Minute |
| RTI | Right to Information |
| SAIL | Steel Authority of India Limited |
| SARS | Severe Acute Respiratory Syndrome |
| SCSI | Small Computer Systems Interface |
| SEBI | Securities and Exchange Board of India |
| SENSEX | Sensitivity Index (of Share Price) |
| SEZ | Special Economic Zone |
| SGPC | Siromani Gurudwara Prabandak Committee |
| SIM | Subscriber Information Module |
| SLV | Satellite Launch Vehicle |
| SMS | Short Message Service |
| SMTP | Simple Mail Transfer Protocol |
| STD | Subscriber Trunk Dialling; Sexually Transmitted Diseases |
| TADA | Terrorist and Disruptive Activities (Prevention) Act |
| TCP | Transfer Call Protocol<br> Transmission Control Protocol |
| TELCO | Tata Engineering and Locomotive Company |
| TFT | Thin-Film Transistor |
| TIFR | Tata Institute of Fundamental Research |
| TISCO | Tata Iron and Steel Company |
| TOEFL | Test of English as a Foreign Language |
| UAV | Unmanned Aerial Vehicle |
| UGC | University Grants Commission |
| ULFA | United Liberation Front of Asom |
| UNESCO | United Nations Educational, Scientific and Cultural Organi-sation |
| UNI | United News of India |
| UNICEF | United Nations International Children's Emergency Fund (now, 'United Nations Children's Fund') |
| UNU | United Nations University |
| UPA | United Progressive Alliance |
| UPSC | Union Public Service Commission |
| URL | Uniform Resource Locator |
| VAT | Value Added Tax |
| VCR | Video Cassette Recorder |
| VIP | Very Important Person |
| VIRUS | Vital Information Resources Under Siege |
| VRML | Virtual Reality Modelling Language |
| VRS | Voluntary Retirement Scheme |
| VSSC | Vikram Sarabhai Space Centre |
| WHO | World Health Organisation |
| WMO | World Meteorological Organisation |
| WTO | World Trade Orga-nisation |
| WWF | World Wildlife Fund |
| WWW | World Wide Web |
| WYSIWYG | What you see is what you get |
| XML | Extensible Mark-up Language |
| YMCA | Young Men's Christian Association |