| Jaquan | | - | African American (Modern) | |
| Jaqueline | | JAK-ə-leen (English), JAK-ə-lin (English) | English (Modern), Portuguese (Brazilian) | |
| Jarl | | YAHRL (Norwegian, Swedish, Danish) | Norwegian, Swedish, Danish, Norse Mythology, Ancient Scandinavian | |
| Jarle | | - | Norwegian | |
| Jaroslavas | | - | Lithuanian | |
| Jasmin (1) | | YAHS-meen (German), JAZ-min (English) | German, English | |
| Jasmina | | - | Croatian, Serbian, Slovene, Macedonian | |
| Jasminka | | - | Croatian | |
| 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 | |
| Jasvinder | | - | Indian (Sikh) | |
| Jaswinder | | - | Indian (Sikh) | |
| Jaume | | ZHOW-mə | Catalan | |
| Jaumet | | - | Catalan | |