| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| JÓHANNES | - | Icelandic, Faroese | ||
| JÓN | - | Icelandic, Faroese | ||
| JÓNA | - | Icelandic | ||
| JÓNAS | - | Icelandic | ||
| JÓNATAN | - | Icelandic | ||
| JÓRUNNR | - | Ancient Scandinavian | ||
| JÓSKA | - | Hungarian | ||
| JÓZEF | YUW-zef | Polish | ||
| JÓZEFA | yuw-ZEF-ah | Polish | ||
| JÓZEFINA | - | Polish | ||
| JÓZSEF | YO-zhef | Hungarian | ||
| JÓZSI | YO-zhee | Hungarian | ||
| JÓZSUA | YO-zhoo-aw | Hungarian | ||
| JÔNATAS | - | Portuguese | ||
| JØRG | - | Danish, Norwegian |