| Abbreviation | Definition |
|---|---|
| ANPRC | Army Navy Personal Radio Communication |
| ANPT | Aeronautical National Pipe Taper |
| ANR | Aeronautica Nazionale Repubblicana(National Republican Air Force) |
| ANR | Aeronautica Nazionale Republicana |
| ANR | Alaskan NORAD (North American Aerospace Defense Command) Region |
| ANR | Approval Not Required |
| ANS | Army Network Station |
| ANSF | Afghan National Security Forces |
| ANSI | American National Standards Institute |
| ANSSR | Aerodynamically Neutral Spin-Stabilized Rocket |
| ANT | Antenna |
| ANTS | Army NBCS (Nuclear, Biological, Chemical Suit) Tracking System |
| ANTS | Army NBCS Tracking System |
| ANV | Army Of Northern Virginia |
| ANVC | Achik National Volunteer Council |
| ANVIS | Aviation Night Vision Imaging System |
| ANVIS | Aviators Night Vision Imaging System |
| ANX | Assign NNXX Routing |
| ANY | Assign NYX Routing |
| ANZA | America, New Zealand, and Australia |