| Abbreviation | Definition |
|---|---|
| AACI | American Anti Cancer Institute |
| AACI | American Anti Corruption Institute |
| AACI | Association of American Cancer Institutes |
| AAEI | Asian American Education Institute |
| AAI | Achievement Assessment Institute |
| AAI | Africa America Institute |
| AAI | Airline Avionics Institute |
| AAI | American Alpine Institute |
| AAI | American Antitrust Institute |
| AAI | American Avalanche Institute |
| AAI | Arab American Institute |
| AAI | Arcata Arts Institute |
| AAI | Arizona Automotive Institute |
| AAIA | Australian Archaeological Institute at Athens |
| AAII | Australian Artificial Intelligence Institute |
| AAJI | African American Justice Institute |
| AAJI | Asian American Justice Institute |
| AAJI | Australian American Justice Institute |
| AALI | American Academic Leadership Institute |
| AAMI | Afro American Music Institute |