| Abbreviation | Definition |
|---|---|
| GTS | General Test Support |
| GTS | German Touring Series |
| GTS | GN&C (Guidance Navigation and Control) Test Station |
| GTS | GNC (Guidance Navigation and Control) Test Station |
| GTU | Glycol Trim Unit |
| GUCP | Ground Umbilical Carrier Plate |
| GUID | GUIDance |
| GUIDO | GUIDance Officer |
| GUL | GSE (Government Support Equipment) Utilization List |
| GUSB | Guided Unified S-Band |
| G-V | Gravity Velocity |
| GVA | GOX (Gaseous OXygen) Vent Arm |
| GVO | Gaviota, Caifornia, VORTAC Station |
| GVT | Ground Vibration Test |
| GVTA | Ground Vibration Test Article |
| GW | Gold Wing |
| GW | Gravity Waves |
| GW | Gross Weight |
| GWA | General Work Area |
| GWM | Dandan, Guam, Spaceflight Tracking Data Network station |