| Abbreviation | Definition |
|---|---|
| ASAS-SUB | Airborne Separation Assurance System - Subordinate Command and Control |
| ASAS-TCAE | All-Source Analysis System - Technical Control and Analysis Element |
| ASAS-TOCSE | All-Source Analysis System - Tactical Operations Center Support Element |
| ASAT | Anti-SATellite |
| ASAT | Automated Systems Approach to Training |
| ASAW | Advanced Surface Attack Weapon |
| ASB | Accessions Support Brigade |
| ASB | Advanced Support Base |
| ASB | Air Staff Board |
| ASB | America Strikes Back |
| ASB | Area Support Battalion |
| ASB | Army Science Board |
| ASB | Army Supply Base |
| ASB | Aviation Support Battalion |
| ASBM | Anti ship ballistic missile |
| ASBM | Anti-Ship Ballistic Missile |
| ASBP | Armed Services Blood Program |
| ASBPO | Armed Services Blood Program Office |
| ASBR | Autonomous System Boundary Routers |
| ASBREM | Armed Services Biomedical Research, Evaluation, and Management |