| Acronym | Definition |
|---|
| DDFA➣Direct Digital Feedback Amplifier (Diodes, Inc.) |
| DDFA➣Dameron-Damron Family Association |
| DDFA➣Deactivation and Decommissioning Focus Area (US Department of Energy) |
| DDFA➣Decontamination and Decommissioning Focus Area (US Department of Energy) |
| DDFA➣Daryl Davies Fine Art Ltd. (est. 1989; UK) |
| DDFA➣Doo Doo Funk Allstars (band) |
| DDFA➣Deputy Director for Force Application |