| Acronym | Definition |
|---|
| DEEI | Dipartimento di Elettrotecnica, Elettronica e Informatica (Italian: Department of Electrical and Computer Electronics) |
| DEEI | Département Eau, Environnement et Infrastructures (French: Department of Water, Environment and Infrastructure) |
| DEEI | Di Elettrotecnica Elettronica e Informatica (Italian: Department of Electrical engineering, Electronics and Computer science) |
| DEEI | Departamento de Engenharia Electrónica e Informática (Universidade do Algarve, Faro, Portugal) |
| DEEI | Designated Electrical Equipment Inspector |
