| Name | Meaning | Gender | Origin |
|---|
| Hulk | | Unisex | Hebrew |
| Hush | | Unisex | Hebrew |
| Hyde | hide | Male | English |
| Ian | Form of John | Male | Scottish |
| Ice | Water frozen solid | Unisex | |
| Ike | Hebrew, laughter | Male | English |
| Imp | | Unisex | Hebrew |
| 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 |
| Jade | Jewel. Courageous and adoring.
| Female | Spanish |
| 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 |
| Jane | gracious, merciful, God is gracious | Female | 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 |