| Gender | Baby Name | Meaning |
|---|---|---|
 | Jeffrey | Peace |
 | Jemma | Precious stone |
| Jen | White, fair |
| Jenna | White, fair |
| Jennifer | White, fair |
| Jenny | White, fair |
| Jerry | Spear rule |
| Jersey | Grassy island |
| Jessie | Gift of God |
| Jett | Jet Black |
| Jillian | Youthful |
| Jimmy | Supplanter |
| Joann | God is gracious |
| Joanna | God is gracious |
| Joanne | God is gracious |
| Joey | God should add another son |
| Johnson | Son of John |
| Joyce | Little lord |
| Judd | To flow down |
| Julianna | Youthful |
| Juliet | Youthful |
| Justin | Just, fair |
| Justina | Fair, just |
| Justine | Just, fair |
| Kailey | Slender |
| Kaley | Slender |
| Kamber | Amber, golden |
| Karenza | Love |
| Kat | Pure |
| Kate | Pure |
