STF

• Spread tow fabric (stf), a type of lightweight fabric • Smooth Trans Focus (STF), technology in photographic lenses that produces a smooth focus effect • STF function, an autobracketing function on certain cameras that emulates a Smooth Trans Focus effect ==Organisations==

• She's the First, an organization that fights gender inequality • Songahm Taekwondo Federation, the South American branch of the American Taekwondo Association • Supreme Federal Court (Portuguese: ), Brazil's supreme court • Svenska Turistföreningen, the Swedish Tourist Association ==Special task forces==

• Special Task Force (SAPS), a South African police tactical unit • Special Task Force (Sri Lanka), Sri Lankan Police Counter-Terrorist force • Special Task Force (India), various police special forces in India • Special Tactical Force, a fictional anti-terrorist unit in Crisis Zone • SchizoTaskForce, a special entertainment organization found in Germany that acts in games as STF. ==Other uses==

• George M. Bryan Airport (FAA location identifier: STF) of Starkville, Mississippi • Shear thickening fluid, a type of smart material whose viscosity increases as shear stress increases • Stepover toehold facelock, a submission hold used in professional wrestling • Common occupational injuries often result from accidents known as slips, trips and falls