| Abbreviation | Definition |
|---|---|
| GSDA | Global Summit on Diagnostic Alternatives |
| GSDIC | Global Somali Diaspora International Conference |
| GSHM | Global Secular Humanist Movement |
| GSI | Grid Security Interface |
| GSOC | Google Summer Of Code |
| GSOS | Global Surgical Oncology Summit |
| GSTC | Graduate Student Topology Conference |
| GSVIS | Global Silicon Valley Innovation Summit |
| GTAC | Google Test Automation Conference |
| GTC | Global Technology Conference |
| GTC | Government Technology Conference |
| GTC | GPU Technology Conference |
| GTGS | Global Technology Governance Summit |
| GTMVC | Ground Target Modeling and Validation Conference |
| GTTC | Greater Toronto Transportation Conference |
| GVC | Golden Valley Conference |
| GVS | Global Volatility Summit |
| GWAM | Grand Western Annual Meeting |
| GWC | Great West Conference |
| GWCCOC | Greater West Chester Chamber of Commerce |