| Israel Aerospace Industries | Academic & Science |
| Inter- American Institute for Global Change Research | Academic & Science |
| Independent Accountants International | Accounts and Finance |
| Israeli Aircraft Industries | Business |
| International Association for Identification | Business |
| Indian Angel Investor | Business |
| Intelligent Automation Inc | Business |
| International Alliance for Interoperability | Business |
| Irwindale Arms, Inc. | Business |
| IEEE Southwest Symposium on Image Analysis and Interpretation | Community |
| International Association of Identification | Community |
| Internet Artificial Intelligence project | Computing |
| Incomplete Artificial Intelligence | Computing |
| Ibm Academic Initiative | Computing |
| Internet Activity Index | Computing |
| Image Acquisition Interface | Computing |
| Illinois Articulation Initiative | General |
| Israel Aircraft Industries Ltd. | General |
| Istituto Affari Internazionali | General |
| Integrity Applications Incorporated | General |
| Israel Aircraft Industries | General |
| Irwindale Arms Incorporated | General |
| Ikatan Akuntan Indonesia | General |
| I Am Inimitable | General |
| Investopedia Anxiety Index | General |
| Innovation in Auto Industry | General |
| International Automobile Importers | General |
| Indonesia Automotive Institute | General |
| Information Architecture Institute | Governmental |
| International Assessment Institute | Governmental |
| International Arbitration Institute | Governmental |
| Institute of Art and Ideas | Governmental |
| Independent Adeministrative Institution | Governmental |
| International Aluminium Institute | Governmental |
| Institute of Archaeologists of Ireland | Governmental |
| Inter American Institute | Governmental |
| Independent Administrative Institution | Governmental |
| Israel Aerospace Institution | Governmental |
| Inter Americas Insurance | Insurance |
| International Alliance of Inhabitants | International |
| I Am Insulted | Internet |
| Infection and Immunity | Medical |
| Israel Aircraft Industry | Military and Defence |
| International African Institute | Regional |