| AAP | Alternate Access Provider |
|---|---|
| AAT | Average Access Time |
| ABM | Access Bandwidth Manager |
| AC | accessory cells (skr.) |
| ACI | Access Control Instruction |
| ACM | Access Control Module |
| ACR | Access Control Register |
| AEL | Accessible Emission Limit |
| AMS | Access Method Memory (skr.) |
| ATA | Alliance for Taxpayer Access |