| Abbreviation | Definition |
|---|---|
| AOTL | Angels of the Light |
| APC | Associated Player Character |
| APPV | Accumulative Personal Performance / Point Value |
| APS | Action Potential Simulation |
| APS | Average Point Score |
| AQ | Action Quake |
| AQ | Ahn'qiraj (World of Warcraft) |
| AR | Assault Rifle |
| AR | Attack Rating |
| ARAM | All Random All Mid |
| ARBF | Alternate Reality Boss Fight |
| ARC | Arcane Roleplayers Consortium |
| ARDS | Action Replay game, for use with Nintendo DS system |
| ARG | Alternate Reality Gaming |
| ARG | Augmented Reality Game |
| ARMA | Armed Assault |
| ARMS | Advanced Remote Mercenary Soldiers |
| ARMS | Agile Remote Mission Squad |
| ARPDAU | Average Revenue Per Daily Active User |
| ARPG | Action Role Playing Game |