CDD
- Cardenden railway station
- Cats Don't Dance
- Centre for Democracy and Development
- Charlottesville Derby Dames
- Childhood disintegrative disorder
- Chlorine dioxide disinfection
- Cidade de Deus (Rio de Janeiro)
- Collaborative Drug Discovery
- Comment programming
- Community Development District
- Community-driven development
- Concentration deficit disorder
- Congregatio Discipulorum Domini
- Conserved domain database
- Cooling degree day
- Craniodiaphyseal dysplasia
- Custom Debian Distribution
- Cyclic delay diversity