| Abbreviation | Definition |
|---|---|
| FVF | First Vertical Flight |
| FVMS | Fluid Volume Measurement System |
| FVV | Facility Verification Vehicle |
| FW | Flag Word |
| FW | Fuel Wasting |
| FWB | Fahrenheit Wet Bulb |
| FWC | Filament Wound Case |
| FWDHTSHLD | ForWarD HeaT SHieLD |
| FWG | Facility Working Group |
| FWHM | Full Width at Half Maximum |
| FWSI | Fairchild-Weston Systems, Inc. |
| FWW | Food, Water, and Waste |
| FWWM | Food, Water, and Waste Management |
| FWWMS | Food, Water, and Waste Management System |
| G | Giga- |
| g | Gram |
| G | Gramma |
| G | Gravitational Constant |
| G | Gravitational Force units |
| G | Gravity |