| Abbreviation | Definition |
|---|---|
| AIHS | Acharya Institute of Health Sciences |
| AIHW | Australian Institute of Health and Welfare |
| AII | American Indian Institute |
| AII | Art Institutes International |
| AII | Association of Independent Institutions |
| AIIA | Albanian Institute of Internal Auditors |
| AIIA | All India Institute of Aeronautics |
| AIIA | All India Institute of Ayurveda |
| AIIA | American Institute for Innovative Apprenticeship |
| AIIA | Associate Indian Institute of Architects |
| AIIA | Australian Institute of International Affairs |
| AIIB | Asian Institute of Intelligent Buildings |
| AIIC | American Institute of Intradermal Cosmetics |
| AIIE | Adani Institute of Infrastructure Engineering |
| AIIE | American Institute of Industrial Engineers |
| AIII | American Indian Institute for Innovation |
| AIIL | Academic International Institute Languages |
| AIIL | African Institute for International Law |
| AIIL | African Institute of International Law |
| AIIL | All India Institute of LAW |