| Abbreviation | Definition |
|---|---|
| DEFSMAC | DEFense Special Missile and Astronautics Center |
| DEH | Director of Engineering and Housing |
| DEIPIG | DOD Enterprise Initiative Program Implementation Group |
| DEL | Deletion |
| DEL | Departmental Expenditure Limit |
| DEL | Deployment Equipment List |
| DELO | Deployment Equipment List - Overseas |
| DEM | Digital Elevation Model |
| DEM/VAL | Demonstration/Validation |
| DEMA | Department of Emergency and Military Affairs |
| DEMA | Department of Emergency Military Affairs |
| Demax | MAXimum Drift Error |
| DEMIL | Demilitarization |
| DEMNS | Distribution Explosive Mine Neutralization System |
| DeMS | Deployment Management System |
| DEMSTAT | Deployment, Employment Mob Status |
| DEMUX | Demultiplexer |
| DENTAC | Dental Activity |
| DEO | Direct Entry Officer |
| DEOMI | Defense Equal Opportunity Management Institute |