| Abbreviation | Definition |
|---|---|
| DEEE | Diploma in Electrical Electronic Engineering |
| DEEP | Dartmouth Engineering Entrepreneurship Program |
| DEEP | Deep Earth Energy Production |
| DEEP | Developing Excellence in Engineering and Physics |
| DEI | Design Engineering Inc |
| DEI | Device Engineering Inc |
| DEI | Device Engineering Incorporated |
| DEI | Dynamic Engineering Inc |
| DEIP | Defence Engineering Internship Program |
| DEMO | Data Engineering Measurement And Optimization |
| DEMO | Design Engineering Methodology for Organizations |
| DEMS | Design of Engineering Material Systems |
| DEP | Data Entry Plug |
| DEP | Design Engineering Partners |
| DER | Designated Engineering Representatives |
| DES | Definitive Engineering Study |
| DESA | Distinguished Engineering Service Award |
| DESD | Data Engineering Solutions Delivery |
| DESG | Defence Engineering Science Group |
| DESG | Defense Engineering and Science Group |