| Abbreviation | Definition |
|---|---|
| AAC | Anti Alien Cult |
| AAC | Awesome Apple CODEC |
| AACF | Atrium Acceptance Celebratory Facelift |
| AAE | Animal Alter Ego |
| AAFES | Another Attempt to Fool Enlisted Soldiers |
| AAG | Anime And Games |
| AAL | Airplanes Always Late |
| AAL | All Anime Links |
| AAMCO | All Automatics Must Come Out |
| AAMCO | Automated Airplane Monkey Cooking Operations |
| AAMSU | All Assam Missing Students Union |
| AAO | Assassin Alliance Organization |
| AAP | Another A-A-P Project |
| AAP | Anti Anti Pokemon |
| AAR | Anime Academy Radio |
| AARGH | All Accidents R Gonna Hurt |
| AARON | Ambitious Acronym Reading Outrageous Nut |
| AARP | Actually Against Real Protection |
| AARP | Another Arrogant Republican Promotion |
| AARP | Association Against Rational Policy |