- DAEC stands for Direction de l’Aménagement, de l’Environnement et des Constructions (French: Directorate of Planning, the Environment and Buildings; Switzerland)
- DAEC stands for Direction de l’Action vers les Entreprises et les Collectivités (French: Direction of Action to Businesses and Communities)
- DAEC stands for Duane Arnold Energy Center (Iowa)
- DAEC stands for Direction des Affaires Européennes et de la Coopération Décentralisée (French: European Affairs Department and Decentralized Cooperation)
- DAEC stands for Direction Académique des Examens et Concours (French: Directorate of Academic Exams and Competition)
- DAEC stands for Délégation Académique à l’Education Culturelle (French: Academic Delegation of Cultural Education)
- DAEC stands for Développement Aménagement Environnement Conseil (French: Environment Development Planning Council)
- DAEC stands for Diffuse-Adhering Escherichia Coli (bacterium)
- DAEC stands for Deutscher Aero Club eV (German Aero Club)
- DAEC stands for Defense Acquisition Excellence Council
- DAEC stands for Darebin Arts and Entertainment Centre (Australia)
- DAEC stands for Danish Atomic Energy Commission
- DAEC stands for Durango Adult Education Center (Durango, CO)
DAEC