| Acronym | Definition |
|---|
| FDB | Fluid Dynamic Bearing (hard disk technology) |
| FDB | Free Data Base |
| FDB | Forwarding Data Base |
| FDB | Font Data Base |
| FDB | Fat Data Block |
| FDB | Financial Data Base |
| FDB | Form Double Constant Byte |
| FDB | Fully Data Base |
| FDB | File Descriptor Block |
| FDB | Fluid Dynamic Bearing |
| FDB | Forwarding Database |
| FDB | Font Definition Block (Macromedia Flash SWF file) |
| FDB | Forum for Democracy in Burma |
| FDB | Flexor Digitorum Brevis |
| FDB | First Data Bank |
| FDB | Facilities Database (various organizations) |
| FDB | Fonds de Dotation pour la Biodiversité (French: Endowment Fund for Biodiversity) |
| FDB | Fællesforeningen for Danmarks Brugsforeninger (Danish Co-operative Wholesale Society) |
| FDB | Fermetures de Bâtiment (French: Building Closures) |
| FDB | Fous du Bitume (French community club) |
| FDB | Fibrocystic Disease of the Breast |
| FDB | Fat Dry Basis (cheese) |
| FDB | Force Draft Blower |
| FDB | Full Data Block |
| FDB | Fahrenheit Dry Bulb |
| FDB | Flight Data Block |
| FDB | Fast Doppler Block |
| FDB | Field Data Book |
| FDB | Feature Data Block |
| FDB | Functional Description of the Battlefield |
| FDB | Film Deposit Box |
| FDB | Failure Distance Biasing |
| FDB | Force Development Branch |
| FDB | Final Denial Barrier (US Air Force) |