| Rank | Abbreviation | Meaning |
|---|
| ***** | GTSA | Griffith-University Taiwanese Student Association
| |
| ***** | GTSA | Globe Turbocharger Specialties Australia
| |
| ***** | GTSA | Gold Technical Support Analyst
| |
| **** | GTSA | Global Transportation Safety Alliance
| |
| **** | GTSA | Ground Transportation Staging Area
| |
| **** | GTSA | Generic Transport Safety Assessment
| |
| **** | GTSA | Global Transportation Service Agreement
| |
| *** | GTSA | Geemarc Telecom SA
| |
| *** | GTSA | Grass Track Sidecar Association
| |
| *** | GTSA | Golden Triangle Snowmobile Association
| |
| *** | GTSA | Global Transaction Services Analyst
| |
| ** | GTSA | Greater Tampa Swimming Association
| |
| ** | GTSA | Georgia Trade Secrets Act
| |
| ** | GTSA | Gas Transmission Service Agreement
| |
| ** | GTSA | Graphics Technology in Space Applications
| |
| ** | GTSA | Grant Thornton South Africa
| |
| * | GTSA | Geographic Text Search Appliance
| |
| * | GTSA | Greenfield Township Sewer Authority
| |
| * | GTSA | Greater Tampa Showmen's Association
| |
| * | GTSA | Geneva Trading Shipping Association
| |
| * | GTSA | Gateway to South America
| |