| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 621 | Jovann | Latin | Form of Jovan 'Father of the sky.'. | M | |
| 622 | Jovanni | Latin | Form of Jovan 'Father of the sky.'. | M | |
| 623 | Jovanny | Latin | Form of Jovan 'Father of the sky.'. | M | |
| 624 | Jovany | Latin | Form of Jovan 'Father of the sky.'. | M | |
| 625 | Jove | Latin | Another name for Jupiter. | M | |
| 626 | Jovi | Latin | Form of Jovan 'Father of the sky.'. | M | |
| 627 | Jovin | Latin | Form of Jovan 'Father of the sky.'. | M | |
| 628 | Jovito | Latin | Form of Jovan 'Father of the sky.'. | M | |
| 629 | Jovon | Latin | Form of Jovan 'Father of the sky.'. | M | |
| 630 | Joyceanne | Latin | Cheerful; merry. | M | |
| 631 | Julen | Latin | Youthful. | M | |
| 632 | Jules | Latin | Youthful. | M | |
| 633 | Julian | Latin | Youthful. Jove's child. From Latin 'Julianus'. Form of Julius and family clan name of several powerful Roman emperors. In the Middle Ages, the name Julian was used for children of either gender, but is now used as a boy's name. | M | |
| 634 | Julieanne | Latin | Jove's child. Feminine of Julius. | M | |
| 635 | Julio | Latin | Youthful. | M | |
| 636 | Julius | Latin | Youthful. | M | |
| 637 | Juliusz | Latin | Youthful. | M | |
| 638 | Jullian | Latin | Youthful. | M | |
| 639 | Jullien | Latin | Youthful. | M | |
| 640 | June | Latin | Young. In Roman mythology Juno was protectress of women and of marriage. In modern times June is therefore known as the bridal month. | M | |