| Abbreviation | Definition |
|---|---|
| A/V | Audio/Video |
| A2DP | Advanced Audio Distribution Profile |
| ABDA | App Based Drivers Association |
| AC-3 | Advanced Cluster Computer Consortium |
| ACCM | Asynchronous Control Character Map |
| ACM | Audio Compression Manager |
| ACPM | Active State Power Management |
| ACR | Advanced Communication Riser |
| AD | Active Directory |
| ADAPT | Aggressive Drivers Are Public Threats |
| ADD | Additional Driver Discovery |
| ADM | Automated Driver Management |
| ADOD | Arizona Department Of Drivers |
| ADS | Automated Deployment Services |
| AEC | Acoustic Echo Cancellation |
| AHCI | Advanced Host Controller Interface |
| ALPC | Adaptive Link Power Control |
| AMD | Advanced Micro Devices |
| APDD | Association of Pizza Delivery Drivers |
| APPRS | Personal |