| Abbreviation | Definition |
|---|---|
| AAOC | Arts Association of Oldham County |
| AAOCC | American Academy of Optometry, California Chapter |
| AAODC | American Association of Oil Drilling Contractors |
| AAOE | American Academy of Ophthalmic Executives |
| AAOE | American Association of Osteopathic Examiners |
| AAOHNS | American Academy of Otolaryngology-Head and Neck Surgery |
| AAOLO | American Association Of Land Owners |
| AAOM | American Academy Of Microbiology |
| AAOM | American Academy of Oral Medicine |
| AAOM | American Association of Orthopaedic Medicine |
| AAOP | American Academy of Orthortists and Prosthetists |
| AAOS | American Academy of Orhopaedic Surgeons |
| AAOS | American Academy of Orthopaedic Surgeons |
| AAOS | American Academy of Orthopedic Surgeons |
| AAOS | Ayurveda Association Of Singapore |
| AAP | Accredited ACH Professional |
| AAP | American Academy of Pediatrics |
| AAP | American Academy of Peridontology |
| AAP | American Academy of Periodontology |
| AAP | Association of American Physicians |