| CDRR | Carbon Digitally Reconstructed Radiography 
| Others |
| CDRR | Central Dosimetry Records Repository
| Others |
| CDRR | Child Development Research Registry
| Others |
| CDRR | Chronic Disease Risk Reduction
| Others |
| CDRR | Climate and Disaster Risk Reduction
| Others |
| CDRR | Clinical Discovery Research Reagents
| Others |
| CDRR | Committee on Disaster Risk Reduction
| Others |
| CDRR | Committee on Disciplinary Rules and Referenda
| Others |
| CDRR | Committee to Defend Reproductive Rights
| Others |
| CDRR | Component Design Requirements Review
| Others |
| CDRR | Contract Documentation Requirements Records
| Others |