| DEEC | Dallas Enviromental Educational Center 
| Others |
| DEEC | Dealer Electronic Excellence Community
| Others |
| DEEC | Department of Early Education and Care
| Others |
| DEEC | Department of Electrotechnic Computers Engineering
| Others |
| DEEC | Desert Energy Enterprise Center
| Others |
| DEEC | Diesel Electronic Engine Control
| Others |
| DEEC | Diesel Engine Emissions Controls
| Others |
| DEEC | Digital Electronic Engine Control
| Others |
| DEEC | Distributed Energy Efficient Clustering
| Others |
| DEEC | Diversity and Educational Equity Committee
| Others |
| DEEC | DuPont Environmental Education Center
| Others |
| DEEC | Duty Exemption Entitlement Certificate
| Others |