| Name | Meaning | Gender | Origin |
|---|
| Gage | a pledge, a pawn | Male | |
| Godzilla | | Male | Hebrew |
| Gomez | | Male | Hebrew |
| Gomez | | Male | Hebrew |
| Hades | World of the dead or hell. | Male | |
| Hannibal | grace of Baal, god of fertility and fortune | Male | Punic |
| Hecate | Mythical Witchcraft Goddess | Unisex | Greek |
| Herman | man of the army | Male | |
| Hulk | | Unisex | Hebrew |
| Ichabod | Glory has Departed | Male | Hebrew |
| Igor | Scottish variation of Welsh Ifor, lord or English form of Scandinavian Ifar, yew | Male | Russian |
| IT | | Unisex | Hebrew |
| Jack | after the Georgetown University mascot, Jack the Bulldog | Male | English |
| Jack | From John - God's gracious gift | Male | English |
| Jager | Carter | Unisex | English |
| Jaguar | Large Spotted Feline | Male | English |
| Jason | the Lord is salvation | Male | Hebrew |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jaws | Bones that form the mouth. A dangerous situation - "The Jaws of Death" | Unisex | |
| Jigsaw | | Unisex | Hebrew |
| Judd | praised | Male | Medieval |
| Lafayette | Hound Dog from the AristoCats
| Male | |
| Lestat | | Unisex | Hebrew |