- DCDB stands for Direct Current Distribution Board (electronics)
- DCDB stands for Digital Cadastral Data Base (Department of Environment and Resource Management; Australia)
- DCDB stands for Domain Control DataBase
- DCDB stands for Dublin City Development Board (Ireland)
- DCDB stands for Dickenson County Discussion Board (Dickenson County, VA; online forum)
- DCDB stands for Darlington County Development Board (Darlington, SC)
- DCDB stands for Digital Cities Data Base