| Abbreviation | Definition |
|---|---|
| TSG | The Stelle Group |
| TSG | Turner Support Group |
| TSH | Tennessee Steel Haulers |
| TSI | The Steel Index |
| TSI | Total Safety Inc |
| TSI | TownHall Software Inc |
| TSI | Transformation Systems Inc |
| TSI | Transformed Services Inc. |
| TSI | Transit Systems Inc |
| TSI | Trinkle Sales Inc |
| TSIIC | Telangana State Industrial Infrastructure Corporation |
| TSKC | The Simon Konover Company |
| TSL | The Shifted Librarian |
| TSL | Trina Solar Ltd |
| TSLF | The Schultz Law Firm |
| TSMA | Teton Seed Marketing Association |
| TSMC | Taiwan Semiconductor Manufacturing Company |
| TSMC | Taiwan Semiconductor Manufacturing Company limited |
| TSMC | Taiwan Semiconductor Manufacturing Company Ltd. |
| TSMI | Total Sports Media Inc |