| AACO | AIDS Activities Coordinating Office |
|---|---|
| AAD | Automatic Activation Device |
| AAR | Active Array Radar |
| ABB | Activity Based Benefits |
| ABC | Active Body Control |
| ADC | Active Directory Connector |
| ADL | Active Duty List |
| ADO | Active Data Object |
| ADP | Active Distribution Panel |
| ADS | Active Directory Services |