STT may refer to:

Organizations ST Telemedia, a portfolio company of Temasek Holdings Stabilimento Tecnico Triestino, a shipbuilding company in Italy State Street Corp. (NYSE symbol), a US financial services company STT Telkom, a telecommunication engineering school Suomen Tietotoimisto, a Finnish news agency Special Investigation Service, a Lithuanian anti-corruption agency

Computing Speech to text, converting spoken audio into text Single transaction translator, a particular functional unit in USB hubs Spin torque transfer, a computer hardware technology

Other uses Cyril E. King Airport (IATA and FAA LID), St. Thomas, U.S. Virgin Islands Soft tissue therapy, a physical treatment Spinothalamic tract, a sensory pathway from skin to thalamus Spread tow tape, in making spread tow fabric Stewarton railway station (station code), Scotland

See also ST2 (disambiguation)