| Abbreviation | Definition |
|---|---|
| ANCR | Army National Capitol Region |
| ANCS | Automatic Net Control System |
| AND | Automatic Digital Network |
| ANDVT | Advance Narrow-band Digital Voice Terminal |
| ANEPA | Army Navy Electronic Production Agency |
| ANFO | Ammonium Nitrate And Fuel Oil |
| ANG | Air National Guard |
| ANG | Alaska National Guard |
| ANGLICO | Air - Naval Gunfire Liaison Company |
| ANGUS | Air National Guard of the United States |
| ANLA | Adivasi National Liberation Army |
| ANMC | American National Metric Council |
| ANMC | Anniston Munitions Center |
| ANMCC | Alternate National Military Command Center |
| ANN | Assign NNX Routing |
| ANO | Associate NCC ( National Cadet Corps) Officer |
| ANOC | Advanced Non-Commissioned Officer's Course |
| ANP | Advanced Nuclear Power |
| ANP | Aviacao Naval Portuguesa(Portuguese Naval Aviation) |
| ANPP | Army Nuclear Power Program |