| Greyston | B | | |
| Greysun | B | English, Old English | Son of the Gray-haired Man, Son of Grave, Son of G |
| Greyton | B | English | Son of the Gray-haired Man, Gray Hill |
| Grias | B | Old Greek | Watchful, Vigilant |
| Gricia | G | | |
| Gricie | G | | A Diminutive of Grace |
| Griezmann | B | | |
| Griffie | B | English, Welsh | Hooked Nose, A Fox, Mythological Beast, Griffin |
| Griffinn | B | English, Welsh | Hooked Nose, A Fox, Mythological Beast, Griffin |
| Griffy | B | English, Welsh | Hooked Nose, A Fox, Mythological Beast, Griffin, S |
| Grigorije | B | Old Greek | Vigilant Watchman, Watchful, Alert, The Watchful |
| Grigorijs | B | | |
| Gríma | G | | |
| Grimalde | B | Old Norse | Grim, Cruel, Atrocious |
| Grimaldy | B | Germanic, Old High German | Grim, A Mighty Protector |
| Grimar | B | Old Norse, Old Greek, Persian | Grim, Cruel, Atrocious, Well Born, Stone, Earthly, |
| Grimbert | B | Old High German, Germanic | Grim, Shiny |
| Grimhild | G | Old Norse, Germanic | Grim, Cruel, Atrocious, Battle Maid, War, Noble, B |
| Grimilde | G | Old Norse, Germanic | Grim, Cruel, Atrocious, Battle Maid, War, Noble, B |
| Grímkell | B | Old Norse | Grim, Cruel, Atrocious, Kettle, Helmet, Cauldron, |
| Grimme | B | Old English | One who is Fierce |
| Grimshaw | B | English | Dark Woods |
| Grinda | G | | |
| Grindl | G | | |
| Grindle | G | | |
| Gringoire | | Greek | To Watch |
| Griogair | B | Old Greek | Vigilant Watchman, Watchful, Alert, The Watchful |
| Gripi | B | Old Norse | Hand Old Norse Grípa = to Grasp |
| Griscelda | G | | |
| Griselidis | | Latin | Thanks |
| Griselly | G | Germanic, Old High German, Latin, English, Italian, Spanish | Fight, Thank You, Gray, Struggle, Gray Warrior |
| Grishka | B | Old Greek | Vigilant Watchman, Watchful, Alert, The Watchful |
| Grishom | B | Old English | Form the Graze Land, Village Surrounded by Pasture |
| Grisselda | G | Germanic, Old High German, Latin, English, Italian, Spanish | Fight, Thank You, Gray, Struggle, Gray Warrior |
| Gristian | B | | |
| Gritli | G | Old Greek | The Pearl |
| Gritta | G | Old Greek | The Pearl |
| Grizela | G | Germanic, Old High German, Latin, English, Italian, Spanish | Fight, Thank You, Gray, Struggle, Gray Warrior |
| Grizzel | G | Germanic, Old High German, Latin, English, Italian, Spanish | Fight, Thank You, Gray, Struggle, Gray Warrior |
| Grizzly | B | | |
| Gromer | B | | |
| Grosvenor | B | French | Great Hunter |
| Grovene | G | | |
| Gruffudd | B | | Red Haired, Chief, Lord |
| Grundi | B | Old Norse | To Think About, to Meditate On |
| Grwn | B | | |
| Gryffen | B | English, Welsh | Hooked Nose, A Fox, Mythological Beast, Griffin |
| Gryffon | B | English, Welsh | Hooked Nose, A Fox, Mythological Beast, Griffin |
| Gryffyn | B | English, Welsh | Hooked Nose, A Fox, Mythological Beast, Griffin |
| Gryfon | G | Old Greek, English, Welsh | Hooked Nose, A Fox, Mythological Beast, Griffin |
| Gryta | G | Old Greek | Form of Margaret, Child of Light, A Pearl, The Pea |
| Gryzelda | G | Germanic, Old High German, Latin, English, Italian, Spanish | Fight, Thank You, Gray, Struggle, Gray Warrior |
| Grækaris | B | Old Greek | Watchful, Vigilant |
| Guadaloupe | U | Arabic | Plenty, Valley of the Wolves, River of the Wolf, W |
| Guadalupana | G | Arabic | Plenty, Valley of the Wolves, River of the Wolf, W |
| Guadalupi | G | Arabic | Plenty, Valley of the Wolves, River of the Wolf, W |
| Guadelupe | G | Arabic | Plenty, Valley of the Wolves, River of the Wolf, W |
| Guadlupe | B | Arabic | Plenty, Valley of the Wolves, River of the Wolf, W |
| Guadulupe | G | Arabic | Plenty, Valley of the Wolves, River of the Wolf, W |
| Gualbert | | German | One Who Governs and Illustrates, Shining |
| Gualterio | B | German, Germanic | To Govern and Loved |
| Guban | G | African | Burnt, One who has Been Burnt |
| Gubbe | B | | Old Man |
| Gubon | B | African | Burnt, One who has Been Burnt |
| Gudbjörn | B | Old Norse, Old High German | Brown, Bear |
| Gudbjørg | G | Old Norse | From the Fortified Hill Or Castle |
| Gudbjørn | B | Old Norse, Old High German | Brown, Bear |
| Gudela | G | Old High German, Germanic | Fight, Secret, Secret Sign, Rune, He who is Praise |
| Gudelina | G | | |
| Gudfast | B | Old Norse, Norwegian | Firm, Witness At a Thing |
