| Name | Meaning | Gender | Origin |
|---|
| Itch | | Unisex | Hebrew |
| Jace | Hebrew, the Lord is salvation | Male | Hebrew |
| Jack | after the Georgetown University mascot, Jack the Bulldog | Male | English |
| Jack | From John - God's gracious gift | Male | English |
| Jag | The Universe | Unisex | Hindu |
| Jake | From Jacob - To fill the place of another | Male | Hebrew |
| James | From Jacob - To fill the place of another, supplanter. | Male | English |
| Jaws | Bones that form the mouth. A dangerous situation - "The Jaws of Death" | Unisex | |
| Jax | God has been gracious: has shown favor. Based on John or Jacques.
| Male | Modern |
| Jay | jaybird | Male | Latin |
| Jazz | The romantic music
| Male | Word |
| Jean | God is gracious | Male | |
| Jeb | beloved friend | Male | English |
| Jed | the hand | Male | English |
| Jeep | | Unisex | Hebrew |
| Jeff | pledge of peace | Male | English |
| Jen | White, Fair | Unisex | English |
| Jess | Gift | Male | English |
| Jet | A deep black colour. Aircraft engine that propels an aircraft forward by expelling exhaust gases toward the rear. | Male | Mineral |
| Jett | Jet Black Gem | Male | English |
| Jim | supplanter | Male | English |
| Jip | | Male | |
| Job | The Persecuted | Male | Hebrew |
| Jock | God has been gracious: has shown favor. Based on John or Jacques.
| Male | Scottish |
| Joe | Abbreviation of Joseph.
| Male | English |