| Institute of Mathematics and Applications | Academic & Science |
| Instituto Miguel Ángel | Academic & Science |
| Institute of Mathematics and its Applications | Academic & Science |
| Institute of the Musical Arts | Academic & Science |
| Improved My Average | Academic & Science |
| Institute of Molecular Agrobiology | Academic & Science |
| International Mycological Association | Academic & Science |
| ההסתדרות הרפואית בישראל | Academic & Science |
| Israel Medical Association | Academic & Science |
| Iran Management Association | Academic & Science |
| انجمن مديريت ايران | Academic & Science |
| Integrity Measurement Architecture | Academic & Science |
| Integrity Management Architecture | Academic & Science |
| International Mariinskaya Academynamed after Maria Dmitrievna Shapovalenko | Academic & Science |
| Institute of Marine Affairs | Academic & Science |
| Institute of Management Accountants | Accounts and Finance |
| Investment Management Agreement | Accounts and Finance |
| Institute of Management Accountants (usa) | Accounts and Finance |
| Iamalele | Airport Code |
| International Marinelife Alliance | Associations & Organizations |
| Irish Museums Association | Associations & Organizations |
| Illinois Mycological Association | Associations & Organizations |
| Internal Models Approach | Banking |
| Internet Marketing Association | Business |
| Industria Macchine Automatiche | Business |
| Incentive Marketing Association | Business |
| Important Millennium Achievers | Business |
| International Media Associates | Business |
| Information Management Associates | Business |
| Industry Minimums Agreement | Business |
| Integrated Methodological Approach | Business |
| Intermediate Multi-Age | Business |
| Indore Management Association | Business |
| International Multimedia Association | Business |
| Insurance Management Administrators | Business |
| Independent Marketing Alliance | Business |
| Investment Management Associates | Business |
| Investment Management Association | Business |
| Image Resources NL | Business |
| Indianapolis Museum of Art | Community |
| International Magnesium Association | Community |
| Institute for the Musical Arts | Community |
| Interactive Media Awards | Community |
| Interchurch Medical Assistance | Community |
| Industrial Minerals Association | Community |
| International Mineralogical Association | Community |
| Independent Music Awards | Community |
| Integrated Media Association | Community |
| Iwate Museum of Art | Community |
| Illinois Manufacturers' Association | Community |
| Idemitsu Music Award | Community |
| Interactive Media Arts | Community |
| Indiana Manufacturers Association | Community |
| International Modern Art | Community |
| Interactive Multimedia Association | Computer and Networking |
| Inverse Multiplexing for ATM | Computer and Networking |
| Intelligent Machine Architecture | Computer Hardware |
| iSCSI Management API | Computing |
| Internet Merchants Association | Computing |
| IWMM Mobile App | Computing |
| Inverse Multiplexing Over Atm | Computing |
| Independent Management Architecture | Computing |
| Intermediate Maintenance Activities | Computing |
| Image File | Computing |
| Internet Merchant Accounts | Computing |
| Indian Medical Association | Country Specific |
| Winimage Graphics | File Type |
| Mirage Vector Graphics ( Ego - Chart - Autumn) | File Type |
| Interplanetary Magic Association | General |
| Identify Modify and Adapt | General |
| Innovative Mineral Analyzers | General |
| Identify Modify Adapt | General |
| Interactive Media Ads | General |
| Individual Mobilization Augmentees | General |
| Information Modeling Assistant | General |
| Instructional Materials Allotment | General |
| In My Apartment | General |
| Idle Mixture Adjuster | General |
| Individually Managed Account | General |
| Intersection Movement Assist | General |
| Isuzu Motors America | General |
| Intake Manifold | General |
| Industria de Montagem de Automoveis | General |
| Injektor Mengen Abgleich | General |
| Isuzu Motors Asia | General |
| Integrated Manufacturing and Assembling | General |
| Information Management Automotive | General |
| Isuzu i-Mark | General |
| Imaginative Modest and Amazing | General |
| Integrated Motor Assist | Governmental |
| Interim Measures Agreement | Governmental |
| Integrated Medicine Alliance | Governmental |
| in Military and | Governmental |
| Indian Military Academy | Indian Ministry of Home Affairs Organization |
| International Microsimulation Association | International |
| International Maritime Academy | International |
| International Maxi Association | International |
| International Monster Association | International |
| Instituto María Auxiliadora | International |
| Institute of Mathematics And | Maths |
| Internal Mammary Artery | Medical |
| Irish Medical Association | Medical |
| Ischaemia-Modified Albumin | Medical |
| Ideomotor Apraxia | Medical |
| Institute for Mathematics and its Applications | Medical |
| Internal Medicine Associates | Medical |
| Idaho Medical Association | Medical |
| Ischemia Modified Albumin | Medical |
| Inferior Mesenteric Artery | Medical |
| Industrial Medical Association | Medical |
| Inferior Meatal Antrostomy | Medical |
| I Might Add | Messaging |
| International Military Antiques | Military and Defence |
| Ignition Modulator Assembly | Military and Defence |
| Individual Mobilization Augmentee | Military and Defence |
| Information Management Area | Military and Defence |
| Intelligent Maintenance Aid | Military and Defence |
| Installation Management Agency | Military and Defence |
| Ideal Mechanical Advantage | Physics Related |
| Institut du Monde Arabe | Regional |
| Independent Mortgage Advisors | Stock Exchange |
| Inverse Multiplexing for Atm (asynchronous Transmission Mode) | Telecommunication |
| Integrated Modular Avionics | Transport & Travel |
