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
