| Abbreviation | Definition |
|---|---|
| DERP | Defense Environmental Restoration Program |
| DES | Data Encryption Standard |
| DES | Dental Equipment Set |
| DES | Disability Evaluating Service |
| DES | discrete event simulation |
| DES | Double-Edge Sword |
| DESA | Defense Evaluation Support Agency |
| DESC | Defense Electronics Supply Center |
| DESCOM | Depot System Command |
| DESCOM | DESign COMmittee |
| DESIGAREA | DESIGnated AREA Message |
| DESP | Data Exchange Service Provider |
| DESP | Deployment Environmental Surveillance Program |
| DESP | Deployment Extension StabiliSation Pay |
| DESP | Development Environment Service Provider |
| DESP | Director Estate Strategy & Policy |
| DEST | Destination |
| DEST | Domestic Emergency Support Team |
| DESTO | Defence Science and Technology Organization |
| DET | Data Entry Terminal |