- DCDA stands for Dichorionic Diamniotic (twin pregnancy)
- DCDA stands for Dehsabz City Development Authority (Afghanistan)
- DCDA stands for Double Check Detector Assembly
- DCDA stands for Dicyandiamide
- DCDA stands for Deborah Case Dance Academy (McAllen, TX)
- DCDA stands for Dorset Coast Digital Archive (England, UK)
- DCDA stands for Drilling Control and Data Acquisition
- DCDA stands for David Chang Design Associates (various locations)
- DCDA stands for Dorosinski Campbell Design Associates (Safety Harbor, FL)
- DCDA stands for Data Collectors & Data Aggregators (UK)
- DCDA stands for Denver Civil Defense Agency
DCDA