| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| JÓNATAN | - | Icelandic | ||
| JÓSKA | - | Hungarian | ||
| JÓZEF | YUW-zef | Polish | ||
| JÓZSEF | YO-zhef | Hungarian | ||
| JÓZSI | YO-zhee | Hungarian | ||
| JÓZSUA | YO-zhoo-aw | Hungarian | ||
| JÔNATAS | - | Portuguese | ||
| JØRG | - | Danish, Norwegian | ||
| JØRGEN | - | Danish, Norwegian | ||
| JØRN | - | Danish, Norwegian | ||
| JÖRAN | - | Swedish | ||
| JÖRG | YUURK | German | ||
| JÖRGEN | - | Swedish | ||
| JÚLIUS | - | Slovak | ||
| JÜRGEN | YUYR-gen | Low German |