| Abbreviation | Definition |
|---|---|
| FDRI | Flight Director Rate Indicator |
| FDS | Feminine Deodorant Spray |
| FDS | Fire Detection and Suppression |
| FDS | Flight Design and Scheduling |
| FDS | Flight Design System |
| FDS | Flight Dynamics Simulator |
| FDS | Fluid Distribution System |
| FDS | Functional Design Specifications |
| FDSC | Flight Dynamics Simulation Complex |
| FDSC | Flight Dynamics Situation Complex |
| FDSS | Flight Dynamics Support System |
| FDST | Flight Dynamics Support Team |
| FDTD | Finite Difference Time Domain |
| FDV | Functional Dependency Violated |
| FE | Iron |
| FE | Field Engineer |
| FE | Fiscal Equalization |
| FE | Financial Expert |
| FE FUM | Ferrous Fumarate |
| FE GLUC | Ferrous Gluconate |
| FE SULF | Ferrous Sulfate |
| FEA | Failure Effects Analysis |
| FEA | Fluids Experiment Apparatus |
| FEA | Finite Element Analysis |
| FEAR | False Evidence About Reality |
| FEAT | Final Engineering Acceptance Test |
| FEAT | Finite Element Analysis Toolkit |
| FEB | Flesh Eating Bacteria |
| FEB | Flow Equalization Basin |
| FEB | Forward Equipment Bay |
| FEC | Forced Expiratory Capacity |
| FEC | Fluorouracil, Ebirubicin, Cyclophosphamide |
| FEC | Field Engineering Change |
| FEC | Forward Events Controller |
| FEC | Force Enquiry Centre |
| FEC | Fast Ethernet Controller |
| FECC | Federal Emergency Communications Coordinators |
| FECS | Federation of European Cancer Societies |
| FED | Flight Events Demonstration |
| FED | Federal Specification Number |
| FEDEM | Finite Element Dynamics in Elastic Mechanisms |
| FEDEX | Federal Express |
| FEDP | Facility and Equipment Design Plan |
| FEE | Fellowship Entrance Exam |
| FEF | Forced Expiratory Flow |
| FEF | Frontal Eye Field |
| FEGLI | Federal Employees Group Life Insurance |
| FEI | Financial Executives Institute |
| FEID | Flight Equipment Interface Device |
| FEID | Functional Engineering Interface Device |