| Abbreviation | Definition |
|---|---|
| APL | Ancient Programming Language |
| APM | Anti Patter Matchers |
| APM | Average Pink Man |
| APOH | Another Phone Off Hook |
| APPLE | Appreciative People Promoting Leinenkugels Extraordinarily |
| APPLE | Arrogance Produces Profit Losing Entity |
| APPLE | Awesome Pepper Prints Losing Energy |
| APS | Asian Parent Syndrome |
| APT | Another Pathetic Tagger |
| AQ | After Quench |
| AQ | Arkansas Quality |
| AQ | Awesome Quotient |
| ARA | Aipac Run Amok |
| ARAB | A Really Agile Brain |
| ARBA | American Rabbit and Bunnies Association |
| ARC | Acid Rocket Clan |
| ARC | Advanced Research for Chariots |
| ARC | Anime Realm Cosplay |
| ARCA | Amateur Racers Crash Always |
| AREK | Audacious Retina Everything Kind |