| IPL | Indian Premier League |
| ICICI | Industrial Credit and Investment Corporation of India |
| IDBI | Industrial Development Bank of India |
| IFSC | Indian Financial System Code |
| INR | Indian Rupee |
| IRDA | Insurance Regulatory and Development Authority |
| IRDA | Infrared DATA Association |
| ISD | International Subscriber Dialing |
| ITC | Indian Tobacco Company |
| ITC | International Trade Center |
| ITC | Independent Telephone Company |
| IAS | Indian Administrative Service |
| ICSE | Indian Certificate of Secondary Education |
| IELTS | International English Language Testing System |
| ISC | Indian School Certificate |
| IC | Integrated Circuit |
| IDE | Integrated Development Environment |
| IDE | Integrated Drive Electronics |
| IMEI | International Mobile Equipment Identity |
| INTERNET | Interconnected Network |
| IPO | Initial Public Offering |
| IT | Information Technology |
| IT | Income Tax |
| ICU | Intensive Care Unit |
| IVF | IN Vitro Fertilization |
| India | India |
| IATA | International Air Transport Association |
| IB | Intelligence Bureau |
| IBM | International Business Machines |
| IBPS | Institute of Banking Personnel Selection |
| ICWA | Indian Child Welfare Act |
| ICWA | Institute of Cost and Works Accountants of India |
| IEEE | Institute of Electrical and Electronics Engineers |
| IFFCO | Indian Farmers Fertilizer Cooperative Limited |
| IIFL | India Infoline Finance Limited |
| IIT | Indian Institute of Technology |
| ITI | Industrial Training Institute |
| ISRO | Indian Space Research Organization |
| ISO | International Organization for Standardization |
| ISI | Indian Standards Institute |
| IRCTC | Indian Railways Catering and Tourism Corporation |
| IPI | International Press Institute |
| IPCC | Integrated Professional Competence Course |
| IOC | International Olympic Committee |
| IMA | Indian Military Academy |
| IMA | Indian Medical Association |
| IL&FS | Infrastructure Leasing & Financial Services |
| IDC | I Don’t Care or In Due Course |
| IMHO | In My Humble Opinion |
| INC | Indian National Congress |
| ICT | Information and Communications Technology |
| ITES | Information Technology Enabled Services |
| IDR | I Don’t Remember |
| IRL | In Real Life |
| IOS | Iphone Operating System |
| IRDP | Integrated Rural Development Programme |
| IGST | Integrated Goods and Service Tax |
| IVR | Interactive Voice Response |
| ICYMI | In Case You Missed It |
| IKR | I Know, Right? |
| IMMD | It Made My Day |
| IDK | I don't know |
| IMO | In my Opinion |
| IMNSHO | In my not so Humble / Honest Opinion |
| IOW | In other Words |
| IBPS Clerk | Institute of Banking Personnel Selection Clerks |
| IBPS PO | Institute of Banking Personnel Selection Probationary Officer |
| IBPS SO | Institute of Banking Personnel Selection Specialist Officer |
| IBPS RRB | Institute of Banking Personnel Selection Regional Rural Banks |
| ICU | Intensive Care Unit |
| IBD | Inflammatory Bowel Disease |
| ITU | Intensive Therapy Unit |
| ICT Time Zone | Indochina Time (Standard Time) |
| IDT Time Zone | Israel Daylight Time (Daylight Saving Time) |
| IOT Time Zone | Indian Chagos Time (Standard Time) |
| IRDT Time Zone | Iran Daylight Time (Daylight Saving Time) |
| IST Time Zone | India Standard Time / India Time (Standard Time) |
| IP address | Internet Protocol |
| IPV4 | Internet protocol version 4 |
| IPV6 | Internet protocol version 6 |
