| International Academy of English | Academic & Science |
| Institute for Applied Ecology | Academic & Science |
| Institute of Applied Engineering | Academic & Science |
| Instituto de Actuarios Españoles | Academic & Science |
| Instituto de Actuarios Españoles | Academic & Science |
| Institute of Spanish Actuaries | Academic & Science |
| In Any Event | Accounts and Finance |
| International Advisory Experts | Business |
| International Aero Engines | Business |
| Ithaca Energy | Business |
| Institute of Adult Education | Community |
| Interprofessional Academy of Educators | Community |
| IRIS Academy of Education | Community |
| Iowa Academy of Education | Community |
| International Association of Educators | Community |
| Invalid Attempt to Escape | Computing |
| Integrated Application Environment | Computing |
| Integral Absolute Error | Computing |
| Integrated Award Environment | General |
| Interior and Exterior | General |
| Inflatable Antenna Experiment | General |
| IBM Analytics Engine | General |
| Institutional Access and Equity | General |
| Innovation Acceleration Experience | General |
| Infinite Attack Exploit | General |
| Instant Arcane Explosion | General |
| Institution of Automotive Engineers | General |
| International Auto Expo | General |
| Imported Auto Expo | General |
| International Automotive Exhibition | General |
| India Auto Expo | General |
| Integriertes Anfahr Element | General |
| International Automotive Engineering | General |
| Institute of Automotive Engineering | General |
| Insane Assylum Escapes | General |
| Institute of Applied Entrepreneurship | Governmental |
| Institute of Applied Energy | Governmental |
| Institute for Academic Excellence | Governmental |
| International Art English | International |
| International Admissions and Enrollment | International |
| International Academy of Endodontics | International |
| Impuesto de Actividades Económicos | International |
| Internal And External | Medical |
