| Joosep | | - | Estonian | |
| JordÃO | | - | Portuguese | |
| Jordana | | hor-DAH-nah (Spanish), jawr-DAN-ə (English) | Spanish, Portuguese, Macedonian, English (Rare) | |
| Jorge | | HOR-khe (Spanish), ZHAWR-zhə (Portuguese) | Spanish, Portuguese | |
| Jorginho | | - | Portuguese | |
| JosÉ | | ho-SE (Spanish), zhoo-ZE (Portuguese) | Spanish, Portuguese | |
| Josefa | | ho-SE-fah (Spanish) | Spanish, Portuguese, Czech | |
| Josefina | | ho-se-FEE-nah (Spanish), zhoo-zə-FEE-nə (Portuguese), yoo-se-FEE-nah (Swedish) | Spanish, Portuguese, Swedish | |
| JosuÉ | | ho-SWE (Spanish), zho-zoo-E (Portuguese) | French, Spanish, Portuguese | |
| Jovita | | ho-VEE-tah (Spanish) | Spanish, Portuguese | |
| Jozefo | | yo-ZE-fo | Esperanto | |
| Ju | | - | Chinese | |
| Juan (2) | | - | Chinese | |
| Judite | | zhoo-DEE-tə (Portuguese), zhoo-JEE-chə (Brazilian Portuguese) | Portuguese | |
| Juhan | | - | Estonian | |