| International Ergonomics Association | Academic & Science |
| International Economic Association | Academic & Science |
| Indian Environmental Association | Academic & Science |
| Irish Economic Association | Academic & Science |
| International Energy Agency | Business |
| International Association for the Evaluation of Education Achievement | Business |
| Illinois Education Association | Community |
| International Epidemiology Association | Community |
| Idaho Education Association | Community |
| Individualized Education Account | Community |
| Italy Economic Association | Community |
| Interfaith Encounter Association | Community |
| Independent Experimental and Art | Community |
| Interscholastic Equestrian Association | Community |
| International Enneagram Association | Community |
| International Epidemiological Association | Community |
| International Encaustic Artists | Community |
| Institute for Educational Advancement | Community |
| Insurance Educational Association | Community |
| International Elite Assembly | Computing |
| Ibm Express Advantage | Computing |
| Ibm Education Assistant | Computing |
| Ion Energy Analysis | Electronics |
| itial Eligibility Assessment | General |
| Insanely Ever After | General |
| Integrated Ecosystem Assessments | General |
| Ian Evan Alexander | General |
| Independent Evaluation Arrangement | General |
| International Engineering Alliance | General |
| Instituto de Estudios de Automocion | General |
| Isuzu East Africa | General |
| Institutional Effectiveness and Analysis | General |
| Intergovernmental and External Affairs | General |
| Individual Estate Archives | General |
| Interest Earning Assets | General |
| International Environmental Agreements | Governmental |
| Institute for Environmental Analytics | Governmental |
| Institute for Environmental Assessment | Governmental |
| Energy Atlas | Governmental |
| Infrastructure and Energy Alter | Governmental |
| Immigration Exchange Agency | Governmental |
| Integrated Economic Accounts | Governmental |
| Institute for Electronic Arts | Governmental |
| International Education Administrators | International |
| Information Exchange Agreements | Military and Defence |
| Islamic Emirate of Afghanistan | Regional |
| Integrated Electronic Assembly | Space Science |
| Individual Estate Account | Stock Exchange |
