| AISA | Acquired Idiopathic Sideroblastic Anaemia 
| Others |
| AISA | Afghanistan Investment Support Agency
| Others |
| AISA | Africa Institute Of South Africa
| Others |
| AISA | Airborne Imaging Spectrometer for Applications
| Others |
| AISA | Alabama Independent School Association
| Others |
| AISA | All Independent Service Alliance
| Others |
| AISA | All India Students Association
| Others |
| AISA | Alliance of International Students and Alumni
| Others |
| AISA | American Import Shippers Association
| Others |
| AISA | American Indian Student Association
| Others |
| AISA | American Indian Studies Association
| Others |
| AISA | American International School of Abu Dhabi
| Others |
| AISA | Approved Information Sharing Agreement
| Others |
| AISA | Arsenal Independent Supporters Association
| Others |
| AISA | Artificial Intelligence and Services Adaption
| Others |
| AISA | Association des Importateurs Suisses d'Automobiles
| Others |
| AISA | Association des Instructeurs de Sport Automobile
| Others |
| AISA | Association of Indian Students in Aachen
| Others |
| AISA | Association of International Schools in Africa
| Others |
| AISA | Association of International Schools in Asia
| Others |
| AISA | Associazione Italiana Per la Storia Dell'Automobile
| Others |
| AISA | Australian Information Security Association
| Others |