| Acronym | Definition |
|---|
| FDF | Fondation de France (French foundation) |
| FDF | Finished Dosage Form (pharmaceuticals) |
| FDF | Food and Drink Federation (UK) |
| FDF | Forms Data Format (Adobe Acrobat) |
| FDF | Fractal Deployment Framework |
| FDF | Forms Data Format |
| FDF | Fiber Distribution Frame |
| FDF | Fundamentally Different Factors |
| FDF | Fiber Distributing Frame |
| FDF | Finnish Defence Forces |
| FDF | Forced Draft Fan |
| FDF | Front Démocratique des Francophones (French: French Democratic Front; Belgium) |
| FDF | Flight Data File |
| FDF | Foundation Degree Forward |
| FDF | Fast Data Finder |
| FDF | Film Development Fund (Hong Kong) |
| FDF | Fundamentally Different Factor(s) |
| FDF | Flight Dynamics Facility |
| FDF | Faith Dance Fellowship (Greek Orthodox church) |
| FDF | Factoría de Ficción (Spanish channel) |
| FDF | Forward-Deployed Forces |
| FDF | Father Dear Father (TV show) |
| FDF | Fort De France, Martinique - Fort De France (Airport Code) |
| FDF | Failure Density Function |
| FDF | Fast Death Factor |
| FDF | Frivillig Drenge- og Pigeforbund (Denmark) |
| FDF | Field Detention Facility |
| FDF | Free Data Format |
| FDF | Flush Door Fastener |
| FDF | Fast De-Fogging |
| FDF | Formerly Declared Facility |
| FDF | Financial Detail File (claims) |
| FDF | Flame Deflector Firex |
| FDF | Field Displacement Filter |
| FDF | Fixture Design and Fabrication |