STF may refer to:
- Bryan Airport Local airport (FAA location identifier: STF) of Starkville, Mississippi
- Save the Tiger Fund
- SendThisFile
- Shear Thickening Fluids, a type of smart material whose viscosity increases as shear stress increases
- Singapore Taekwondo Federation, the Singapore national governing body for taekwondo; an affiliate of World Taekwondo Federation and Asian Taekwondo Union
- Songahm Taekwondo Federation, the South American branch of the American Taekwondo Association
- Sonic the Fighters, an arcade game
- Special Tactical Force, a South African Counter-Terrorist force, also the name of the Counter-Terrorist force from Crisis Zone
- Strict Transitional Frameset It used in HTML Doctype
- Special Task Force, Sri Lankan Police Counter-Terrorist force
- Special Task Force (India)
- Specialist Task Force, a type of body within ETSI
- Sports table football, a competitive table top game derived from Subbuteo
- Spread Tow Fabrics
- Steal This Film (movie)
- Steel Trowel Finish (construction)
- Stepover Toehold Facelock, a submission hold used in professional wrestling
- Minolta/Sony STF 135mm f/2.8 lens, a special SLR camera lens that produces a "Smooth Trans Focus" effect
- Sub-Tropical Front (Subtropical Front)
- Supremo Tribunal Federal, Brazil's Supreme Court
- Svenska Turistföreningen, the Swedish Tourist Association