| Abbreviation | Definition |
|---|---|
| DDF | Developer Design Forum |
| DDFL | Doorlopend Democratisch Forum Landsmeer (Dutch: Continuing democratic forum Landsmeer) |
| DEDF | Digital Electronics Developers Forum |
| DEF | Defense Entrepreneurs Forum |
| DEFL | Digital Enterprise Forum Lucerne |
| DELF | Digital Entertainment Leadership Forum |
| DELF | Digital Entrepreneur Leadership Forum |
| DFAF | Double Fine Action Forums |
| DFF | Deutsches Flachdisplay Forum |
| DIEF | Diversion Information Exchange Forum |
| DIF | Delusional Idiots Forum |
| DIF | Digital Innovation Forum |
| DIF | Digital Interoperability Forum |
| DJF | Dallas Junior Forum |
| DKF | Deutsches Kompensations Forum |
| DLAF | Dorset Local Access Forum |
| DLLF | Deeper Learning Leadership Forum |
| DOCF | Docklands Oversight and Consultative Forum |
| DOLZEN | Jednotka z filmu "Co~ takhle dát si apenat?" :) |
| DOLZEN | Jednotka z filmu "Což takhle dát si špenat?" :) |