| Abbreviation | Definition |
|---|---|
| AGMI | Armenian Genocide Museum institute |
| AGTI | Appalachian Gestalt Therapy Institute |
| AHADI | Agile Harmonized Assistance for Devolved Institutions |
| AHDI | American Health Data Institute |
| AHI | American Hellenic Institute |
| AHPI | American Health Policy Institute |
| AHPI | Applied Health Policy Institute |
| AHRI | Association of Human Rights Institutes |
| AHRI | Australian Human Relations Institute |
| AHRI | Australian Human Resource Institute |
| AHURI | Australian Housing and Urban Research Institute |
| AI | Appraisal Institute |
| AIA | American Institutes of Architect |
| AIAA | American Institute of Aeronautics and Astronautics |
| AIAB | Asian Institute of Applied Buddhism |
| AIAD | Asian Institute of Advanced Dentistry |
| AIAF | Asia Institute of Art Finance |
| AIAHP | Australian Institute for the Achievement of Human Potential |
| AIAI | Artificial Intelligence Applications Institute |
| AIAME | Andrology Institute America Middle East |