| Jakov | | - | Serbian, Croatian, Macedonian | |
| Jalal | | - | Arabic, Persian | |
| Jaleh | | - | Persian | |
| Jalen | | JAY-lin | African American (Modern) | |
| Jalil | | - | Arabic, Persian | |
| Jam | | - | Persian Mythology | |
| Jamaar | | jə-MAHR | African American (Rare) | |
| Jamar | | jə-MAHR | African American | |
| Jamshed | | - | Persian, Tajik, Persian Mythology | |
| Jamsheed | | - | Persian, Persian Mythology | |
| Jamshid | | - | Persian, Persian Mythology | |
| Jamyang | | - | Tibetan, Bhutanese | |
| Jan (1) | | YAHN (Dutch, Swedish, Norwegian, Polish, German) | Dutch, Swedish, Norwegian, Danish, Czech, Polish, Slovene, German, Catalan | |
| Jana (1) | | YAH-nah (Dutch, German) | Czech, Slovak, Dutch, German, Slovene, Catalan | |
| Jana (2) | | YAH-nah | Croatian, Serbian | |