| Abbreviation | Definition |
|---|---|
| DFB | Defence Fire Brigade |
| DFB | Delta Force Barracks |
| DFB | Dublin Fire Brigade |
| DFBS | Defense Finance Battlefield System |
| DFC | Defense Force Commander |
| DFC | Deputy Force Commander |
| DFC | Detention Facility Commander |
| DFC | Distinguished Flying Cross |
| DFCC | Digitize Force Coordination Cell |
| DFCE | Defence Force Correction Establishment |
| DFCE | Defence Force Correctional Establishment |
| DFD | Data Flow Diagram |
| DFD | Defense Facilities Directorate |
| DFD | Directorate of Force Development |
| DFDA | Defence Force Discipline Act |
| DFD-WHS | Defense Facilities Directorate for Washington Headquarters Services |
| DFE | Defense For Everyone |
| DFE | Delta Force Empires |
| DFE | Division Force Equivalent |
| DFE | DJIOC (Defense Joint Intelligence Operations Center) Forward Element |