| Abbreviation | Definition |
|---|---|
| GSE | Ground Support Equipment |
| GSERD | General System Engineering Research and Development |
| GSF | General Support Forces |
| GSF | Gross Square Feet |
| GSF | Ground System of the Future |
| GSFG | Group of Soviet Forces Germany |
| GSFG | Group of Soviet Forces in Germany |
| GSG9 | Grenzschutzgruppe 9 der Bundespolizei (Border Protection Group 9 of the Federal Police) |
| GSIE | Ground Systems Industrial Enterprise |
| GSK | General Service Knowledge |
| GSLF | Gathering of Sudan Liberation Forces |
| GSM | General Support Maintenance |
| GSM | Generic Simulation Manager |
| GSM | Ground Station Module |
| GSM | Ground Support Module |
| GSM/CGS | Ground Station Module/Common Ground Station |
| GSMA | Greater Seoul Metropolitan Area |
| GSMM | Ground Systems Material Management |
| GSMMO | Ground Systems Material Management Office |
| GSMS | General Support Missile System |