| Abbreviation | Definition |
|---|---|
| GSC | Ground State Crossover |
| GSCE | Gas Source Control Equipment |
| GSEC | Golden Spread Electric Cooperative |
| GSET | Goldman Sachs Electronic Trading |
| GSIC | Group-wise Successive Interference Cancellation |
| GSIE | Grounding System Internal to External |
| GSM | Global System for Mobile (communications) |
| GSMBE | Gas Source Molecular Beam Epitaxy |
| GSME | Guilin Strong Micro Electronics |
| GSPID | Gain- Scheduled Proportional Integro-Differential |
| GSSAPI | Generic security services Api |
| GSU | Generator Step-Up |
| GTA | Gas Tungsten Arc (welding) |
| GTE | General Telephone Electronics |
| GTE | Gran Turismo Electric |
| GTE | Grand Touring Electric |
| GTE | Grand Turing Electric |
| GTE | Grand Turismo Electric |
| GTIA | Graphic Television Interface Adaptor |
| GTO | Gate Turn Off (thyristor) |