| Gabriela | | gahp-RYE-lah (Polish), gah-BRYE-lah (Spanish), gahp-ree-E-lah (German) | Portuguese, Polish, Romanian, Spanish, German, Czech, Slovak, Croatian, Bulgarian | |
| Gaspar | | gah-SPAHR (Spanish) | Spanish, Portuguese, Judeo-Christian Legend | |
| Genoveva | | he-no-VE-vah (Spanish), zhə-noo-VE-və (Portuguese) | Spanish, Portuguese | |
| Geraldo | | he-RAHL-do (Spanish) | Spanish, Portuguese | |
| Germano | | - | Italian, Portuguese | |
| Gertrudes | | - | Portuguese | |
| GervÁSio | | - | Portuguese | |
| Gil (1) | | HEEL (Spanish), ZHEEL (Portuguese) | Spanish, Portuguese | |
| Gilberto | | jeel-BER-to (Italian), heel-BER-to (Spanish) | Italian, Spanish, Portuguese | |
| Gilda | | - | Italian, Portuguese | |
| Gisela | | - | German, Dutch, Spanish, Portuguese | |
| GlÁUcia | | - | Portuguese | |
| GlÁUcio | | - | Portuguese | |
| Glauco | | GLOW-ko (Italian, Spanish) | Italian, Spanish, Portuguese | |
| Gloria | | GLAWR-ee-ə (English), glo-REE-ah (Italian), GLAW-ryah (Polish) | English, Italian, Spanish, Portuguese, German, Polish | |