| Abbreviation | Definition |
|---|---|
| DS2 | Decontaminating Solution No 2 |
| DS4 | Direct Support Unit Standard Supply System |
| DSA | Defense Special Assessment |
| DSA | Defensive Sea Area |
| DSA | Designated Support Activity |
| DSA | Digital Signature Algorithm |
| DSA | Direct Sales Agreement |
| DSA | Disability Service Allowance |
| DSA | Disk Storage Assembly |
| DSA | Division Support Area |
| DSAA | Defense Security Assistance Agency |
| DSACS | Defense Standard Ammunition Computer System |
| DSAD | Driver's Situational Awareness Display |
| DSAMS | Defense Security Assistance Management System |
| DSAR | Defense Supply Agency Regulation |
| DSARC | Defense System Acquisition Review Council |
| DSARC | Defense Systems Acquisition Review Council |
| DSAT | Defense Satellite |
| DSB | Defense Science Board |
| DSB | Defensive Shore Bombardment |