- DCEC stands for Directorate on Corruption and Economic Crime (est. 1994; Botswana)
- DCEC stands for Delaware County Electric Cooperative (Delhi, NY)
- DCEC stands for Defense Communications Engineering Center (US DoD)
- DCEC stands for Direction Cantonale de l’Etat Civil (French: Cantonal Directorate of Civil Status; Geneva, Switzerland)
- DCEC stands for District of Columbia Education Compact
- DCEC stands for Darwin Convention and Exhibition Centre (Darwin, Northern Territory, Australia)
- DCEC stands for Denton County Electric Cooperative (Corinth, TX)
DCEC