TGSI
| Acronym | Definition |
|---|---|
| TGSI | Temperature at Ground Snow Interface |
| TGSI | Trans Global Services, Inc. (Houston, TX) |
| TGSI | Tactile Ground Surface Indicator |
| TGSI | Transactions of the Gaelic Society of Inverness (journal) |
| TGSI | Thyroid Growth Stimulating Immunoglobulin |
| TGSI | Tungsten Graphics Shader Infrastructure |