| Acronym | Definition |
|---|
| STTS➣Sekolah Tinggi Teknik Surabaya (Indonesian: Surabaya Technical High School; Surabaya, Indonesia) |
| STTS➣Soft Tactile Transducer Sensor (safety mat system) |
| STTS➣Service Tunnel Transport System (Channel Tunnel) |
| STTS➣System Test & Troubleshooting Station |
| STTS➣Scottish Tramway and Transport Society (UK; est. 1951) |
| STTS➣Shatin Tsung Tsin Secondary School (Hong Kong) |
| STTS➣Scaphoid-Trapezium-Trapezoid Subluxation (hand injury) |