| Abbreviation | Definition |
|---|---|
| AAAA | American Association of Advertising Agencies |
| AAAA | anyway Awesomely Atrocious Arrogant |
| AAAA | Autonomous Arthropod Aerial Appliance |
| AAAAA | Always Active Art Awesomeness Algorithm |
| AAAAAAAA | Alligators Ate Ant And Apples At Airports |
| AAAB | All American Alien Boy |
| AAAC | All Al Alloy Conductors |
| AAAC | All aluminium alloy conductors |
| AAAC | All Aluminum Alloy Cable |
| AAAC | All Aluminum Alloy Conductors |
| AAAC | An Autonomous Agent Choreo |
| AAAC | Avery Aldridge Activity Center |
| AAAC | Avoid At All Cost |
| AAACE | Airport Access Authorization To Commercial Establishments |
| AAAD | Adeline Ashby Antiques District |
| AAAD | Aromatic L amino acid decarboxylase |
| AAADM | Automated Assistance in Administrative Decision Making |
| AAAF | Affirmation Of Aboriginal Affiliation Form |
| AAAF | American Academy of Applied Forensics |
| AAAF | American Academy of Audiology Foundation |