| Abbreviation | Definition |
|---|---|
| ASC | Assistant State Commissioner |
| ASCA | Administrative Simplification Compliance Act |
| ASCI | Accelerated Strategic Computing Initiative |
| ASCP | Armenia School Connectivity Program |
| ASDAR | Administrative and Service Departments Annual Review |
| ASDS | Applied Systems and Decision Support |
| ASEAN | Association of South-East Asian Nations |
| ASF | Administrative Support Facility |
| ASH | American Society of Haematology |
| ASHARA | Asbestos School Hazard Abatement Reauthorization Act |
| ASIC | Aviation Security Identification Card |
| ASL | American Sign Language |
| ASM | Administrative Support Manual |
| ASNT | American Society for Nondestructive Testing |
| ASO | Administrative Services Organization |
| ASPE | HHS Office of the Assistant Secretary for Planning and Evaluation |
| ASS | Assignment |
| ASSDHRL | Assistant Secretary of State for Democracy, Human Rights, and Labor |
| ASSN | Accounting station symbol number |
| ATA | Authority To Advertise |