| Abbreviation | Definition |
|---|---|
| AIRY | Association for International Relations in Yamagata |
| AIS | Association for Integrative Studies |
| AIS | Association for Interdisciplinary Studies |
| AIS | Association for Israel Studies |
| AISA | Alabama Independent School Association |
| AISA | All India Students Association |
| AISA | American Import Shippers Association |
| AISA | Association of Indian Students in Aachen |
| AISA | Australian Information Security Association |
| AISB | Association of International School Basel |
| AISBL | Association Internationale Sans But Lucratif |
| AISE | Association of Iron and Steel Engineers |
| AISF | association des internationaux du ski français |
| AISF | Association of Independent Schools of Florida |
| AISL | Association of Independent School Librarians |
| AISLE | Association of Indiana School Library Educators |
| AISMA | All India Station Masters Association |
| AISNA | Association of Italian Surgeons in North America |
| AISP | Association of International Seafood Professionals |
| AIT | Association of Inhalation Toxicologists |