| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| GWILYM | - | Welsh | ||
| GWLADUS | - | Welsh | ||
| GWLADYS | - | Welsh | ||
| GWRTHEYRN | - | Ancient Celtic | ||
| GWYDION | - | Welsh Mythology | ||
| GWYN | - | Welsh | ||
| GWYNEDD | - | Welsh | ||
| GWYNEIRA | - | Welsh | ||
| GWYNETH | - | Welsh, English (Modern) | ||
| GWYNFOR | - | Welsh | ||
| GWYNN | - | Welsh | ||
| GWYTHYR | - | Welsh | ||
| GYŐZŐ | DYUU-zuu | Hungarian | ||
| GYÐA | - | Ancient Scandinavian, Icelandic | ||
| GYÖNGYI | DYUUN-dyee | Hungarian |