| Abbreviation | Definition |
|---|---|
| AAOA | Arkansas Airport Operators Association |
| AAOA | Aurora Airport Owners Association |
| AAOD | American Association of Distributors |
| AAOE | American Association of Orthopedic Executives |
| AAOF | Airboat Association of Florida |
| AAOF | Aluminum Association of Florida |
| AAOM | American Association of Orthopedic Medicine |
| AAOM | Association of Assessing Officers of Manitoba |
| AAONP | American Association of Nurse Practitioners |
| AAOU | Asian Association of Open University |
| AAOU | Association of Asian Open Universities |
| AAP | Association for Academic Psychiatry |
| AAP | Association of Academic Physiatrists |
| AAP | Association of American Physicians Association of American |
| AAPA | All Africa Pool Association |
| AAPA | American Amateur Press Association |
| AAPA | American Association of Pathologists' Assistants |
| AAPA | American Association of Physical |
| AAPA | American Association of Physical Anthropologists |
| AAPA | American Association of Professional Apiculturists |