| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| JAMSHED | - | Persian, Tajik, Persian Mythology | ||
| JAMSHEED | - | Persian, Persian Mythology | ||
| JAMSHID | - | Persian, Persian Mythology | ||
| JAN (1) | YAHN (Dutch, Swedish, Norwegian, Polish, German) | Dutch, Swedish, Norwegian, Danish, Czech, Polish, Slovene, German, Catalan | ||
| JAN (3) | - | Medieval English | ||
| JANCSI | YAWN-chee | Hungarian | ||
| JANEK | YAH-nek (Polish) | Polish, Czech | ||
| JANEZ | - | Slovene | ||
| JANI | YAH-nee (Finnish) | Finnish, Hungarian | ||
| JANIKA | - | Hungarian | ||
| JANKIN | - | Medieval English | ||
| JANKO | - | Slovene, Croatian, Serbian, Slovak | ||
| JANNE (1) | YAHN-ne | Finnish, Swedish | ||
| JANNICK | - | Danish | ||
| JANNIK | - | Danish |