| Abbreviation | Definition |
|---|---|
| STFU | Street Tried Fords Unlimited |
| STG | Special Technical Group |
| STG | System Technology Group |
| STGC | Stewart Title Guaranty Company |
| STGI | SiRON Technologies Group Inc |
| STHC | Song Tranh Hydropower Company |
| STHU | Stichting Tijdelijke Huisvesting Utrecht |
| STI | Scientific Technologies Inc |
| STI | Shimano Total Integration |
| STI | Software Technology, Inc. |
| STI | Specialized Transportation Inc |
| STI | Specified Technologies Inc |
| STI | Specified Technologies, Inc. |
| STI | Stellar Technologies International |
| STI | Subaru Technica International |
| STI | Superconductor Technologies Inc |
| STICO | Strategy and Tactics for Initial Company Operations |
| STIE | Sekolah Tinggi Ilmu Ekonomi |
| STIN | Sabre Travel Information Network |
| STKGR | Schulman, Treem, Kaminkow, Gilden, & Ravenell |