| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| JÓHannes | - | Icelandic, Faroese | ||
| JÓN | - | Icelandic, Faroese | ||
| JÓNa | - | Icelandic | ||
| JÓNas | - | Icelandic | ||
| JÓNatan | - | Icelandic | ||
| JÓRunnr | - | Ancient Scandinavian | ||
| JÚLia | ZHOO-lyə (Portuguese), YOO-lee-aw (Hungarian) | Portuguese, Catalan, Hungarian, Slovak | ||
| Jaala | - | Biblical | ||
| Jaap | YAH:P | Dutch | ||
| Jaasau | - | Biblical | ||
| Jabbar | - | Arabic | ||
| Jabez | JAY-bez (English) | Biblical | ||
| Jabin | JAY-bin (English) | Biblical | ||
| Jabir | - | Arabic | ||
| Jabr | - | Arabic |