AAII
| Acronym | Definition |
|---|---|
| AAII | American Association of Individual Investors |
| AAII | Alabama Aircraft Industries, Inc. (Birmingham, AL) |
| AAII | Aristolochic Acid II (toxicology) |
| AAII | African American Islamic Institute |
| AAII | Ad Astra International Inc. (study programs; Canada) |
| AAII | Australia Artificial Intelligence Institute |