| Abbreviation | Definition |
|---|---|
| DEC | Darn Expensive Component |
| DECA | DIRECTV Ethernet Coaxial Adapter |
| DEL | DELete key |
| DEWI | Drilling Electronic Weight Indicator |
| DF | Disk Free |
| DF | Dissipation Factor |
| DF | Dyna Flat |
| DFB | Distributed FeedBack |
| DFH | Doors Frames and Hardware |
| DFM | Device Fault Manager |
| DFP | Digital Flat Panel |
| DFS | Distinct Formatted Sector |
| DFS | Dynamic Folding System |
| DFU | Device Firmware Update |
| DFU | Device Firmware Upgrade |
| DGC | Dedicated Graphics Chip |
| DGVA | Digital Variable Gain Amplifier |
| DH | Dual Head |
| DHE | Design Human Engineering |
| DHNE | Diploma in Hardware Network Engineering |