| Jasna | | - | Croatian, Serbian, Slovene, Macedonian | |
| Jason | | JAY-sən (English) | English, French, Greek Mythology (Anglicized), Biblical | |
| Jasper | | JAS-pər (English), YAHS-pər (Dutch) | English, Dutch, Judeo-Christian Legend | |
| Jathbiyya | | - | Arabic | |
| Jathibiyya | | - | Arabic | |
| Jaume | | ZHOW-mə | Catalan | |
| Jaumet | | - | Catalan | |
| Javan | | JAY-vən (English) | Biblical | |
| Javor | | - | Croatian, Serbian, Slovene | |
| Jawahir | | - | Arabic | |
| Jawdat | | - | Arabic | |
| Jaylen | | JAY-lən (American), JAY-lin (English) | African American (Modern), English (Modern) | |
| Jaylin | | JAY-lin | African American (Modern), English (Modern) | |
| Jaylon | | JAY-lən | African American (Modern) | |
| Jean (1) | | ZHAWN | French | |