| Acronym | Definition |
|---|
| STT | Securities Transaction Tax (India) |
| STT | Suomen Tietotoimisto (Finnish National News Agency) |
| STT | Speech to Text (system for hearing impaired) |
| STT | Secure Transaction Technology |
| STT | Spinothalamic Tract |
| STT | Schirmer Tear Test (ophthalmology) |
| STT | Short Term Training |
| STT | Soft Tissue Therapy |
| STT | Student Talking Time (TESOL jargon) |
| STT | System Time Table |
| STT | Single Target Track |
| STT | Special Tactics Team |
| STT | Small Tactical Terminal |
| STT | Satellite Transportable Terminal (communications; US Army) |
| STT | State Transition Table |
| STT | Set-Top Terminal |
| STT | Skid to Turn (missile) |
| STT | SEAL Tactical Training |
| STT | St. Thomas Hall (University of Scranton) |
| STT | Space-Time Trellis (coding scheme) |
| STT | Save the Trees (band) |
| STT | Shore Targeting Terminal |
| STT | Source to Target (data mapping) |
| STT | Short Term Throughput |
| STT | Special Task Team |
| STT | Soft Tissue Trauma |
| STT | Statement to Task |
| STT | School of Telecommunications Technology |
| STT | St Thomas Island, VI, USA - Cyril E. King Airport (Airport Code) |
| STT | Scaphotrapezoid-Trapezial (Joint) |
| STT | Sky Trek Tower (amusement park ride) |
| STT | Slave to Target (blog) |
| STT | Scaphoid, Trapezium and Trapezoid (wrist bones) |
| STT | System Test Tool |
| STT | Strategy and Training Teams |
| STT | Situational Training Template |
| STT | Serial Thrombin Time |
| STT | Software Tips and Tricks (website) |
| STT | Signal Tracking Trainer |
| STT | System Technical Test |
| STT | Schedule Training Time |
| STT | Spread To Treasurys |
| STT | Success-To-The-Top Network Routing |
| STT | Scalar Timing Theory |
| STT | Swiss Table Tennis |
| STT | Surface Tension Transfer (welding) |
| STT | State Street Corporation (stock symbol) |
| STT | Stability Transition Team (US Army) |
| STT | Strategy-To-Task |
| STT | Stop Tail Turn (tractor trailer lighting) |
| STT | Sumatran Tiger Trust |
| STT | Septic Tank Treatment (home maintenance) |