| Name | Meaning | Gender | Origin |
|---|
| Guinness | Brand of stout beer from Ireland. | Unisex | |
| Gulliver | glutton | Male | Irish |
| Gumdrop | | Unisex | Hebrew |
| Gyro | | Unisex | Hebrew |
| Hamilton | after the american politician Alexander Hamilton | Male | English |
| Hannibal | grace of Baal, god of fertility and fortune | Male | Punic |
| Harlequin | | Unisex | Hebrew |
| Hendrix | | Male | Hebrew |
| Hennessy | | Unisex | Hebrew |
| Henri | Ruler Of The Home | Unisex | French |
| Hercules | glory of Hera | Male | Greek |
| Hermes | the messenger god | Male | Greek |
| Hershey | Brand of chocolate. | Male | |
| Hickory | | Male | Hebrew |
| Hobbes | bright fame | Male | English |
| Hobbit | | Male | Hebrew |
| Honeybee | | Unisex | Hebrew |
| Houdini | | Male | Hebrew |
| Huggie | | Unisex | Hebrew |
| Hugo | Intelligent
| Male | Latinized |
| Huxley | inhospitable place | Male | English |
| Igor | Scottish variation of Welsh Ifor, lord or English form of Scandinavian Ifar, yew | Male | Russian |
| Indy | after Indiana Jones | Unisex | |
| Jack | after the Georgetown University mascot, Jack the Bulldog | Male | English |
| Jack | From John - God's gracious gift | Male | English |