| Fred | Variant Of Frederick Peaceful Ruler. | Male |
| Frederica | Peaceful Ruler. Feminine Of Frederick. | Female |
| Frederico | Peaceful Ruler. | Male |
| Gabriel | God Is My Strength | Male |
| Gabriela | God Is My Strength; Heroine Of God | Female |
| Gabrielo | God Is My Strength | Male |
| Garcia | Brave In Battle | Male |
| Gaspar | French Form Of Caspar (Guardian Of The Treasure) | Male |
| Genoveva | White Wave | Female |
| Geraldo | Rules By The Spear. | Male |
| Germana | From Germany | Female |
| Germano | German | Male |
| Gertrudes | Spanish Form Of Gertrude Spear | Female |
| Gervasio | Warrior | Male |
| Gil | Happiness | Male |
| Gilberta | Hostage | Female |
| Gilberto | Spanish Form Of Gilbert Hostage | Male |
| Gilda | Golden. Also An Abbreviation Of Teutonic Names Containing Gilde. | Female |
| Gisela | Pledge. | Female |
| Godofredo | Spanish Form Of Godfrey Friend Of God | Male |
| Graciana | Grace | Female |
| Gregorio | Watchful | Male |
| Gustavo | Royal Staff. | Male |
| Erasmo | Friendly | Male |
| Heitor | Variant Of Hector. | Male |