| AAR | Active Array Radar |
|---|---|
| ABC | Active Body Control |
| ADC | Active Directory Connector |
| ADL | Active Duty List |
| ADO | Active Data Object |
| ADP | Active Distribution Panel |
| ADS | Active Directory Services |
| ADT | Active Denial Technology |
| ADT | Active Duty Tour |
| AIMD | Active Implantable Medical Device |