| OAC (Ordnance Ammunition Command) |
| 병기탄약사령부 | |
| |
| OACSC-E (Office of the Assistant Chief of Staff for Communications- Electronics) |
| 통신전자 참모부장실 | |
| |
| OAD (Operational Availability Data) |
| 운용 가용성 제원 | |
| |
| OADR (Originating Agency Declassifying Required) |
| 기안부서 재분류요 | |
| |
| OADR (Originating Authority Determine Requirement) |
| 기안부서 결정요 | |
| |
| OAFIE (Office of the Armed Forces Information and Education) |
| 정훈실(부) | |
| |
| OAG (Operational Action Group) |
| 작전조치단 | |
| |
| OAG (Operational Analysis Group) |
| 운영분석단 | |
| |
| OAP (Outline Acquisition Plan) |
| 개략획득계획 | |
| |
| OAS (Offensive Air Support) |
|
공세적 항공지원
| OAS (Office Automation System) |
| 사무 자동화 체계 | |
| |
| OASD (Office of the Assistant Secretary of Defense) |
| 국방차관보실 | | | |
