| Acronym | Definition |
|---|
| FSD | Fifty Shades Darker (book and film) |
| FSD | Female Sexual Dysfunction |
| FSD | Fire Safety Director (various locations) |
| FSD | Fonctionnaire de Sécurité de Défense (French: Defense Security Officer) |
| FSD | Fox Sports Detroit |
| FSD | Frame Shift Drive (spaceships) |
| FSD | Federal Service Desk (US General Services Administration) |
| FSD | Full Self-Driving (Tesla, Inc.) |
| FSD | Fail Safe Defaults |
| FSD | Full Set of Data |
| FSD | Fail Safe Device |
| FSD | File Set Descriptor |
| FSD | Free Software Directory (Free Software Foundation) |
| FSD | Family Support Division |
| FSD | Facilities Services Division (various organizations) |
| FSD | Foundation for Sustainable Development |
| FSD | Fédération des Sports de Danse de France (French: Federation of Sports Dance in France) |
| FSD | File System Driver |
| FSD | Full Scale Development |
| FSD | Financial Support Direction |
| FSD | Fire Services Department (Hong Kong) |
| FSD | Fonds Social de Développement (French: Social Development Fund) |
| FSD | Fee Simple Determinable (property classification) |
| FSD | Federal Systems Division (IBM) |
| FSD | Forensic Services Division (US FEMA) |
| FSD | Financial Systems Division (various organizations) |
| FSD | Full Scale Deflection |
| FSD | Fondation Suisse de Deminage (Swiss Foundation for Mine Action; Geneva, Switzerland) |
| FSD | Frequency Selective Damping (Shock Absorber) |
| FSD | Federal Systems Division |
| FSD | Free Standing Double (product feature) |
| FSD | Front for Socialism and Democracy (Senegal) |
| FSD | Flying Scholarships for the Disabled |
| FSD | Full Spectrum Dominance |
| FSD | Fire/Smoke Damper (HVAC systems) |
| FSD | Feminist Scholarship Division (International Communication Association) |
| FSD | Fools Seldom Differ |
| FSD | Free Software Daily |
| FSD | Freeman School District (Rockford, WA) |
| FSD | Functional Specifications Document (project documentation, software development) |
| FSD | Fourier Self Deconvolution |
| FSD | Final Supplementary Declaration (UK) |
| FSD | Sioux Falls, SD, USA - Joe Foss Field (Airport Code) |
| FSD | Florida School for the Deaf |
| FSD | File Set Descriptor (OSTA universal disk format) |
| FSD | Family Services Department |
| FSD | Fahrzeugsystemdaten GmbH |
| FSD | Focus to Skin Distances (radiography) |
| FSD | Functional Scope Document (various companies) |
| FSD | flame supervision device |
| FSD | Fayetteville School District (Arkansas) |
| FSD | Fire Screen Door (various companies) |
| FSD | Final Switching Device |
| FSD | Fleet Services Division (NYPD) |
| FSD | Fairview School District (Pennsylvania) |
| FSD | Fixed Shroud Device (fiber optic connector) |
| FSD | Financial Service Department |
| FSD | Forgotten Souls of Darkness (America's Army gaming clan) |
| FSD | Field Systems Directorate |
| FSD | Foster-Seeley Discriminator |
| FSD | Flying Spot Digitizer |
| FSD | Feasibility Study Document |
| FSD | Functional Soft Drink |
| FSD | Field-Sized Distribution (oil & gas) |
| FSD | Functional Sequence Diagram |
| FSD | Frente Social Democrático (Spanish) |
| FSD | Field Systems Division |
| FSD | Forest Survey Division (Nepal) |
| FSD | Fire System Deficiency (US FEMA) |
| FSD | Fiscal Services Director |
| FSD | Frequency-Sensitive Damping |
| FSD | Flight Support Division |
| FSD | Force Spectral Density |
| FSD | Final Scope Document |
| FSD | Forecast Support Date |
| FSD | Fuel Supply Depot |
| FSD | First-degree Stochastical Dominance |
| FSD | Foreign Sea Duty |
| FSD | Flexible Spare Distribution |
| FSD | Formal System Development |
| FSD | Foreign Service Dispatch |
| FSD | Forward Sited Depot |
| FSD | Fluidic Setting Device |
| FSD | Financial Service District |
| FSD | Federal Security Directorates (US Department of Homeland Security) |
| FSD | First Scheduled Delivery |