STF

STF may refer to:

Concepts

 * 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
 * Short-time fasting (STF), medical term

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: Supremo Tribunal Federal), 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), an Indian special police force

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