| Acronym | Definition |
|---|
| DDEC➣Direction Départementale de l'Equipement des Collèges (French: Provincial Directorate of College Equipment) |
| DDEC➣Direction Diocésaine de l'Enseignement Catholique (French: Diocesan Catholic Education Directorate) |
| DDEC➣Detroit Diesel Electronic Controls |
| DDEC➣Digital Direction Electronics Co. (South Korea) |