| Abbreviation | Definition |
|---|---|
| IAI | Institute of Art and Ideas |
| IAI | Inter American Institute |
| IAI | International Aluminium Institute |
| IAI | International Arbitration Institute |
| IAI | International Assessment Institute |
| IAI | Israel Aerospace Institution |
| IAIA | Institute of American Indian Arts |
| IAIA | Institute of Arab and Islamic Art |
| IAIE | Institute for Australia India Engagement |
| IAIM | Ice Arena Institute of Management |
| IAIN | Institute Agama Islam Negeri |
| IAIN | International Association of Institutes of Navigation |
| IAIS | Institute for American Indian Studies |
| IAJ | Institute for Administrative Justice |
| IAJ | Institute for the Administration of Justice |
| IAJ | Institute of Actuaries of Japan |
| IAL | Institute for Adult Learning |
| IAL | Institute of Applied Learning |
| IAL | Institute of Art and Law |
| IALD | Institute for Advanced Laser Dentistry |