| Acronym | Definition |
|---|
| FID | Flame Ionization Detector |
| FID | Final Investment Decision |
| FID | Free Induction Decay |
| FID | Fiducial |
| FID | Foreign Internal Defense |
| FID | Field Identifier |
| FID | Firearms Identification (card) |
| FID | Financial Institutions Duty (Australia) |
| FID | Federation Internationale de Documentation |
| FID | Format Identifier |
| FID | Fédération Internationale d'information et de Documentation |
| FID | Fremantle International Distribution |
| FID | Feature Identification |
| FID | Foreign Income Dividend |
| FID | File Identifier Descriptor (CD-R) |
| FID | Format Identification |
| FID | Fixed Income Division |
| FID | Function Identifier |
| FID | First in Defense (motto/nickname for USS Forrestal) |
| FID | Frame Identifier |
| FID | Frequency Identifier (computing) |
| FID | Federacion Internacional de Domino (Spanish: International Domino Federation) |
| FID | Field Interface Device |
| FID | From Invoice Date |
| FID | Force Identification |
| FID | Fondation Internationale pour Le Développement (French: International Foundation for Development) |
| FID | Fault Insertion Device |
| FID | Federal Identifier |
| FID | Format Identification Data |
| FID | Fault Isolation Detection |
| FID | Forest Inspection Division |
| FID | Fault Isolation Diagnostics |
| FID | Failure Identifier |
| FID | Force Integration Division (usually in G3 Operations office) |
| FID | Feature Identification Data |
| FID | Flight Instrumentation Division |
| FID | Fully Integrated Delivery |
| FID | Foreign Intelligence Defense |
| FID | Functional Interface Document |
| FID | Functional Interface Drawing |
| FID | Fixed Induction Date (US DoD) |
| FID | Field Induction Date |
| FID | Fault Indicator Directory |