| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 581 | Ginessa | Spanish | White. | F | |
| 582 | Gitana | Spanish | Gypsy. | F | |
| 583 | Godalupe | Spanish | Reference to the Virgin Mary. | F | |
| 584 | Godfredo | Spanish | Spanish form of Godfrey 'friend of God'. | M | |
| 585 | Godofredo | Spanish | Spanish form of Godfrey 'friend of God'. | M | |
| 586 | Gorane | Spanish | Holy cross. | F | |
| 587 | Gotzone | Spanish | Angel. | F | |
| 588 | Gracia | Spanish | Grace. | F | |
| 589 | Graciana | Spanish | Grace. | F | |
| 590 | Gregoria | Spanish | Vigilant. | F | |
| 591 | Gregorio | Spanish | Watchful. | M | |
| 592 | Guadalupe | Spanish | Named for the Virgin Mary. | F | |
| 593 | Gualterio | Spanish | Spanish form of Walter 'strong warrior'. | M | |
| 594 | Guido | Spanish | Guide. | M | |
| 595 | Guillelmina | Spanish | Resolute protector. | F | |
| 596 | Guillermo | Spanish | Variant of William 'Resolute protector.'. | M | |
| 597 | Gustava | Spanish | Staff of the gods. | F | |
| 598 | Gustavo | Spanish | Royal staff. | M | |
| 599 | Hector | Spanish | Tenacious. | M | |
| 600 | Henriqua | Spanish | Feminine form of Henrique: rules the home. | F | |