| Acronym | Definition |
|---|
| GTSA | Geneva Trading & Shipping Association |
| GTSA | Graphics Technology in Space Applications |
| GTSA | Geographic Text Search Appliance |
| GTSA | Greater Tampa Swimming Association |
| GTSA | Generic Transport Safety Assessment (UK) |
| GTSA | Greater Tampa Showmen's Association |
| GTSA | Geemarc Telecom SA |
| GTSA | Gold Technical Support Analyst |
| GTSA | Gas Transmission Service Agreement |
| GTSA | Ground Transportation Staging Area |
| GTSA | Grass Track Sidecar Association (UK) |
| GTSA | Global Transportation Service Agreement |
| GTSA | Griffith-University Taiwanese Student Association |
| GTSA | Globe Turbocharger Specialties Australia |
| GTSA | Golden Triangle Snowmobile Association (Ontario, Canada) |
| GTSA | Grant Thornton South Africa |
| GTSA | Global Transportation Safety Alliance (Sterling Heights, MI) |