| Abbreviation | Definition |
|---|---|
| DCE | Direct Commission Engineer |
| DCES | Data Center Engineering Specialist |
| DCGI | Drug Controller General of India |
| DCH | Delivery Centre Head |
| DCI | Detective Chief Inspector |
| DCI | Detective Coporate Investigator |
| DCM | Deputy Chief of Mission |
| DCMH | Deputy Configuration Manager For Hardware |
| DCOE | Defensive Cyberspace Operations Engineer |
| DCP | Deferred Compensation Program |
| DCP | Dental Care Professional |
| DCSO | Deputy Chief Security Officer |
| DCT | Development Consulting And Training |
| DCT | Diversified Career Technology |
| DCW | Dust, Clean, Wax |
| DD | Deputy Director |
| DD | Disco Dancer |
| DDC | Detailed Design Consultant |
| DDE | Designated Duty Engineer |
| DDE | Directional Drilling Engineer |