| Acronym | Definition |
|---|
| SDF | Syrian Democratic Forces |
| SDF | Sans Domicile Fixe (French: Homeless) |
| SDF | Same Deutz-Fahr (Italian agricultural machinery manufacturer) |
| SDF | Stromal Cell-derived Factor |
| SDF | Self Defense Force (US DoD) |
| SDF | Self-Defense Forces (Japan) |
| SDF | Social Democratic Front (Cameroon) |
| SDF | Search Dog Foundation (est. 1996; Ojai, CA) |
| SDF | Somaliland Development Fund |
| SDF | Software Delivery and Fulfillment |
| SDF | Standard Data Format |
| SDF | System Dialog Facility |
| SDF | Sun Development Framework |
| SDF | System Data File |
| SDF | Shutdown Function |
| SDF | Software Development Facility |
| SDF | System Data Format |
| SDF | Structured Data Format |
| SDF | Structured Directory Format |
| SDF | Service Data Function |
| SDF | Software Development Forum |
| SDF | Space Delimited Format |
| SDF | Solidarité des Français (French: French Solidarity) |
| SDF | Sustainable Development Fund |
| SDF | Synchronous Data Flow (signal processing) |
| SDF | Switch Disconnector Fuse (power distribution systems) |
| SDF | Skills Development Fund (South Africa) |
| SDF | Scottish Drugs Forum (UK) |
| SDF | Social Democratic Federation |
| SDF | Syntax Definition Formalism |
| SDF | Sûreté de Fonctionnement |
| SDF | Social Design Fund (Japan) |
| SDF | Spillway Design Flood (hydrology) |
| SDF | Spatial Data File (Autodesk, Inc.) |
| SDF | Standard Data Format (file name extension) |
| SDF | Sony Defense Force |
| SDF | Standard Delay Format |
| SDF | Specialdistriktsförbund (Sweden) |
| SDF | System Data Format (Telabs) |
| SDF | Single Degree of Freedom |
| SDF | Super Dimensional Fortress (Macross/Robotech anime series) |
| SDF | Staff Development Forum (UK) |
| SDF | Service Data Function (ITU-T & ETSI) |
| SDF | Social Development Foundation (India) |
| SDF | Strategic Development Fund (UK) |
| SDF | Service Delivery Framework |
| SDF | Safing and Deservicing Facility |
| SDF | Simplified Directional Facility (US FAA) |
| SDF | Sugar Development Fund |
| SDF | Synchronous Diaphragmatic Flutter |
| SDF | Sustainable Development Framework |
| SDF | Screen Definition Facility |
| SDF | Sanayee Development Foundation |
| SDF | Science Data Formatter |
| SDF | Standard Delay File |
| SDF | Louisville, KY, USA - Standiford Field (airport code) |
| SDF | Software Development Framework |
| SDF | School District Finance (legislation) |
| SDF | Swiss Dairy Food |
| SDF | Sans Difficulté Financière |
| SDF | Software Development Folder |
| SDF | Sales Disclosure Form (Indiana) |
| SDF | Saviya Development Foundation (Sri Lanka; est. 1991) |
| SDF | Step-Down Fix (aviation) |
| SDF | Status Display Facility |
| SDF | State Dedicated Fund (New York) |
| SDF | Self-Defense Fleet |
| SDF | Soft Decision Feedback |
| SDF | System Development Facility |
| SDF | Sludge Derived Fuel |
| SDF | Salik Development Foundation (est. 1989; Pakistan) |
| SDF | Sleazy Disco Folk (band) |
| SDF | Standard Distance File |
| SDF | Subclass Data File |
| SDF | Simulation Data Format |
| SDF | Segment Delay Fault |
| SDF | Server Definition File |
| SDF | Safety Data File |
| SDF | Scan Distribute Function (AT&T) |
| SDF | Software Development Facility/File |
| SDF | Sleep Disorder Facility |
| SDF | Surface Direct Fire |
| SDF | Start Data Flow |
| SDF | Secure Digital Facsimile |
| SDF | Spartan Dominion Forums |
| SDF | Significant Data File |
| SDF | Severity Distribution Function |
| SDF | Supplier's Data File |
| SDF | Shape Data File |
| SDF | Signal Detection Factor |
| SDF | Screen Door Film (Austin, TX) |
| SDF | Spin-unrestricted Density Functional |
| SDF | Super Density Fiberboard |
| SDF | Suitability Determination File |
| SDF | Standard Dual Frame |
| SDF | Strategic Defensive Forces |
| SDF | Family-Based Stepper Dispatch Algorithm (scheduling rule) |