| Abbreviation | Definition |
|---|---|
| TS | Tung-Sol |
| TSA | Tech Support Associates |
| TSA | Travel Services of Akumal |
| TSA | Tri-State Ambulance |
| TSAC | Tennessee Student Assistance Corporation |
| TSAI | Transaction Systems Architects Inc |
| TSB | Torstar Corporation "B" |
| TSBC | The Small Business Company |
| TSC | Telephone Service Company |
| TSC | Terrible Service Company |
| TSC | The Service Center |
| TSC | The Service Company |
| TSC | Tippecanoe School Corporation |
| TSC | Tool Service Corporation |
| TSC | Tractor Sales Corporation |
| TSC | Tractor Supply Company |
| TSC | Tunisian Scientific Consortium |
| TSCC | The Sirius Cybernetics Corporation |
| TSCC | Toronto Standard Condominium Corporation |
| TSCL | The SEARLE Company Limited |