STT
- Cyril E. King Airport
- ST Telemedia
- ST2 (disambiguation)
- STT Telkom
- Single transaction translator
- Soft tissue therapy
- Special Investigation Service
- Speech to text
- Spin torque transfer
- Spinothalamic tract
- Spread tow tape
- Stabilimento Tecnico Triestino
- State Street Corp.
- Stewarton railway station
- Suomen Tietotoimisto