| Jaroslav | | - | Czech, Slovak | |
| Jaroslava | | - | Czech, Slovak | |
| Jarred | | JER-əd, JAR-əd | English | |
| Jarrett | | JER-ət, JAR-ət | English | |
| Jarrod | | JER-əd, JAR-əd | English | |
| Jarvis | | JAHR-vis | English | |
| Jaska | | YAHS-kah | Finnish | |
| Jaslyn | | JAZ-lin | English (Rare) | |
| Jasmin (1) | | YAHS-meen (German), JAZ-min (English) | German, English | |
| Jasmina | | - | Croatian, Serbian, Slovene, Macedonian | |
| Jasmine | | JAZ-min (English), zhas-MEEN (French) | English, French | |
| Jasmyn | | JAZ-min | English (Modern) | |
| 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 | |