| Abbreviation | Definition |
|---|---|
| DISA | Direct Inward Station Access |
| DISC | Data Information Systems and Communications |
| DISL | Dynamic Inter-Switch Link |
| DIT | Distributed Information Technology |
| DITP | DOD IPv6 Transition Program |
| DITR | Distributed Information Technology Resource |
| DKIM | DomainKeys Identified Mail |
| DL | Distribution List |
| DLAN | Defense Logistics Agency Network |
| DLB | Digital LoopBack |
| DLB | Dynamic Load Balancing |
| DLC | Data Link Control |
| DLC | Distribution Line Carrier |
| DLD | Drive Level Dependency |
| DLE | Destination Local Exchange |
| DLGW | Data Link GateWay |
| DLL | Data Link Layer |
| DLP | Desktop Link Protocol |
| DMA | Distant Monitor Access |
| DMA | Domain Manager Agent |