| Abbreviation | Definition |
|---|---|
| DDFT | Deusto Donostia Football Team |
| DEF | Defense |
| DEFC | Doncaster East Football Club |
| DFCA | Digoin Football Club Association |
| DFFL | Darcman's Fantasy Football League |
| DFFL | Deutsche Flag Football Liga |
| DFFL | Diehard Fantasy Football League |
| DFFL | Dolphins Flag Football League |
| DFFL | Drinking Fantasy Football League |
| DFFL | Drinking Fantasy Football Leaque |
| DFFL | Dynasty Flag Football League |
| DFL | Developmental Football League |
| DFL | Dublin Football League |
| DFOA | Dallas Football Officials Association |
| DFOA | Denver Football Officials Association |
| DFWF | Dementia Friendly Walking Football |
| DGFL | Devon Girls Football League |
| DHFC | Dulwich Hamlet Football Club |
| DIFA | Deaf International Football |
| DIFA | Deaf International Football Association |