| Rank | Abbreviation | Meaning |
|---|
| ***** | TCSG | Technical College System of Georgia
| |
| ***** | TCSG | Telephone Company Subpoena Generator
| |
| **** | TCSG | The Church of the SubGenius
| |
| **** | TCSG | The Center for Social Gerontology
| |
| **** | TCSG | Technical College System of Georgia's
| |
| *** | TCSG | Transformed Cell Surface Glycoproteins
| |
| *** | TCSG | Twin Cities Singles Golf Association
| |
| *** | TCSG | Traffic Control Systems Group
| |
| *** | TCSG | The Council of State Governments
| |
| *** | TCSG | The Community Service Grant
| |
| ** | TCSG | Textile and Clothing Strategy Group
| |
| ** | TCSG | Testing Calibration Signal Generator
| |
| ** | TCSG | Time Code Signal Generator
| |
| * | TCSG | Tehachapi Collaborative Study Group
| |
| * | TCSG | The Concurrent Systems Group
| |
| * | TCSG | Trans Cultural Study Guide
| |
| * | TCSG | Trecentosessantagradi
| |
| * | TCSG | Toshiba Computer Systems Group
| |
| * | TCSG | The Cyber Systems Group
| |
| * | TCSG | Tri County Sand and Gravel
| |
| * | TCSG | Twin Cities Singles Golf
| |