| Abbreviation | Definition |
|---|---|
| AAAF | Ark Angels Activator Fund |
| AAAF | Association of Alberta Agricultural Fieldmen |
| AAAF | Association of Alberta Agriculture Fieldmen |
| AAAF | Australia Alopecia Areata Foundation |
| AAAG | Alcohol and Aging Awareness Group |
| AAAG | America at a Glance |
| AAAH | Aromatic Amino Acid Hydroxylases |
| AAAL | Active Array Antenna Lens |
| AAAL | Ankara Ataturk Anadolu Lisesi |
| AAAL | Arthritis-Attributable Activity Limitation |
| AAAMI | Aborted Acute Anterior Myocardial Infarction |
| AAAN | AETN All Asia Networks |
| AAAO | Associate Account Authorization Official |
| AAAO | Autotrophic Anaerobic Ammonium Oxidising |
| AAAP | Adult Archery Achievement Program |
| AAAP | Amino Acid Auxin Permease |
| AAAP | Analytics and AI Accelerate Program |
| AAAP | Aortic Aneurysm Antigenic Proteins |
| AAAP | Art Agency And Production |
| AAAP | As Accurate As Possible |