| Acronym | Definition |
|---|
| DEES➣Diplôme d'Etat d'Educateur Spécialisé (French: State Diploma of Specialist Educator; professional certification) |
| DEES➣Division of Earth and Ecosystem Sciences (est. 1999; Desert Research Institute; Nevada) |
| DEES➣Domestic Energy Efficiency Scheme (Ireland) |
| DEES➣Dynamic Electromagnetic Environment Simulator |
| DEES➣Department of Environmental and Engineering Services (Florida) |
| DEES➣Department of Engineering and Environmental Services |