| Abbreviation | Definition |
|---|---|
| DASC | Direct Air Support Center |
| DASC(A) | Direct Air Support Center (Airborne) |
| DASD | Deputy Assistant Secretary of Defense |
| DASD | Direct Access Storage Device |
| DASD(H&RA) | Deputy Assistant Secretary of Defense (Humanitarian & Refugee Affairs) |
| DASD(I) | Deputy Assistant Secretary of Defense (Intelligence) |
| DASD(PK/HA) | Deputy Assistant Secretary of Defense (PeaceKeeping and Humanitarian Affairs) |
| DASD(S&IO) | Deputy Assistant Secretary of Defense (Security and Information Operations) |
| DASD-CN | Deputy Assistant Secretary of Defense for Counter-Narcotics |
| DASE | Defense Against Sound Equipment |
| DASH | Drone Anti Submarine Helicopter |
| DASIAC | DoD Nuclear Information and Analysis Center |
| DASPS | DA Standard Port System |
| DASPS-E | DA Standard Port System-Enhanced |
| DASSS | De-centralized Automated Service Support System |
| DAT | Deployment Action Team |
| DATAF | Depot Activation Task Force |
| DATE | Defense Against The Enemy |
| DATEA | Department of the Army TMDE Executive Agency |
| DATM | Dummy Air Training Missile |