| Abbreviation | Definition |
|---|---|
| D/C | Displays/Controls |
| D/L | Data Link |
| D/L | De-orbit/Landing |
| D/L | Downlink |
| D/L | DownList |
| D/S | DownStream |
| D/VD | Data/Voice Data |
| DA | Data Acquisition |
| DA | Deployment Assembly |
| DA | Distribution Assembly |
| DA | Double Amplitude |
| DA&D | Data Acquisition and Distribution |
| DAA | Data Availability Acknowledgment |
| DAAWG | Disability Awareness and Action Working Group |
| DAB | Data Acquisition Bus |
| DABS | Discrete Address Beacon System |
| DAC | Data Acquisition and Control |
| DAC | Data Acquisition Camera |
| DAC | Digital to Analog Converter |
| DAC | Diversity Awareness Committee |