| Abbreviation | Definition |
|---|---|
| DK | DecK |
| DK | Display/Keyboard |
| DK | DocKing |
| DL | Development - Left |
| DL | DownLink |
| DL | Electronics Engineering Division, Design Engineering Directorate (Design, eLectronics) |
| DLAT | Destructive Lot Acceptance Testing |
| DLC | Direct Lift Control |
| DLS | Dynamic Load Simulator |
| DLSM | Data Link Summary Message |
| DLTR | Data Link Terminal Repeater |
| DLTR | Data Link Transmission Repeater |
| DLY | DeLaY |
| DM | Dark Matter |
| DM | Data Management |
| DM | Data Manager |
| DM | Development Motor |
| DM | Disassembly Manual |
| DM | Docking Mechanism |
| DM | Document |