| gascromatografia | gas chromatography |
| gasdotto | gas pipeline |
| GasGas | Gas Gas |
| Gasherbrum I | Gasherbrum I |
| Gasherbrum II | Gasherbrum II |
| Gasolina | Gasoline |
| gasolio | diesel |
| gasolio per riscaldamento | domestic fuel oil |
| Gasosaurus constructus | Gasosaurus |
| Gaspar Cassadó | Gaspar Cassadó |
| Gaspar de Portola | Gaspar de Portolà |
| Gaspar Melchor de Jovellanos | Gaspar Melchor de Jovellanos |
| Gaspar Sanz | Gaspar Sanz |
| Gaspar Van Wittel | Gaspar van Wittel |
| Gaspard Auguste Brullé | Gaspard Auguste Brullé |
| Gaspard Bauhin | Gaspard Bauhin |
| Gaspard de Châtillon | Gaspard de Coligny |
| Gaspard Gustave de Coriolis | Gaspard-Gustave Coriolis |
| Gaspard Le Roux | Gaspard Le Roux |
| Gaspard Monge | Gaspard Monge |
| Gaspard Ulliel | Gaspard Ulliel |
| Gaspare | Caspar |
| Gasparo Contarini | Gasparo Contarini |
| Gasparo Gozzi | Gasparo Gozzi |
| gassa | stopper knot |
| gassata | sparkling |
| gassato | aerated |
| gassificare | gasify |
| gassificazione | gasification |
| gassiforme | gaseous |
| Gassogeno | Wood gas |
| gassometro | gasometer |
| gassosa | gassy |
| gassoso | gaseous |
| Gasteropelecidae | Freshwater hatchetfish |
| gasteropodi | gastropod |
| Gaston Bachelard | Gaston Bachelard |
| Gaston Doumergue | Gaston Doumergue |
| Gaston Julia | Gaston Julia |
| Gaston Leroux | Gaston Leroux |
| Gaston Maspero | Gaston Maspero |
| Gaston Rébuffat | Gaston Rébuffat |
| Gaston Thorn | Gaston Thorn |
| Gastone Paperone | Gladstone Gander |
| Gastornis | Gastornis |
| gastrectomia | gastrectomy |
| gastrico | gastric |
| gastrite | gastritis |
| gastroenterite | gastroenteritis |
| gastrointestinale | gastrointestinal |
| gastronomia | delicatessen |
