| Acronym | Definition |
|---|
| AISA | All India Students' Association (politics) |
| AISA | American Indian Scouting Association (est. 1956) |
| AISA | Australian Information Security Association (est. 1999; trade association) |
| AISA | Afghanistan Investment Support Agency |
| AISA | Africa Institute of South Africa |
| AISA | Acquired Idiopathic Sideroblastic Anemia (disorder) |
| AISA | American Indian Student Association |
| AISA | Association of International Schools in Africa (Nairobi, Kenya) |
| AISA | Alabama Independent School Association |
| AISA | American Institute for Shippers' Associations, Inc. |
| AISA | American International School of Abu-Dhabi (Abu Dhabi, UAE) |
| AISA | Artificial Intelligence Smart Agents |