| Abbreviation | Definition |
|---|---|
| AOA | Amphibious Objective Area |
| AoA | Analysis of Alternatives |
| AOA | Angle Of Arrival |
| AOA | Attack On Acquisition |
| AOAG | Airborne Operations Assessment Group |
| AOAP | Add On Armor Panel |
| AOAP | Army Oil Analysis Program |
| AOAS | Army Officers Advanced School |
| AOAS | Army Officers' Advanced School |
| AOB | Advanced Operations Base |
| AOB | Air Order of Battle |
| AOB | Approved Operating Budget |
| AOB | Aviation Operations Branch |
| AOBC | Armor Office Basic Course |
| AOC | Afghanistan Over Clocking |
| AOC | Air and Space Operations Center |
| AOC | Approved Operational Concept |
| AOC | Area Of Concentration |
| AOC | Area Of Concern |
| AOC | Army Operations Center |