| Abbreviation | Definition |
|---|---|
| DDO | Discrete Digital Output |
| DDP | Design Development Plan |
| DDP | Digital Data Processing |
| DDPC | Digital Data Processing Center |
| DDPF | Dedicated Display Processing Function |
| DDPS | Digital Data Processing System |
| DDR | Data Discrepancy Report |
| DDR | Design Development Record |
| DDR | Detailed Design Review |
| DDS | Data Display System |
| DDS | Detailed Design Specification |
| DDS | Documentation Distribution System |
| DDT&E | Design, Development, Test, and Evaluation |
| DDTF | Dynamic Docking Test Facility |
| DDTS | Dynamic Docking Test System |
| DDU | Data Display Unit |
| DDU | Decommutator Distribution Unit |
| DDU | Display Driver Unit |
| DE | Design Engineering Directorate |
| DE | Doppler Extractor |