| Name | Meaning | Gender | Origin |
|---|
| Gizmo | A mechanical device or gadget. | Unisex | |
| Gucci | | Female | Hebrew |
| Gus | From Gustave - Staff of the Goths | Male | English |
| Gypsy | Wanderer
| Female | English |
| Harlequin | | Unisex | Hebrew |
| Harley | Old English for Army Meadow. From the hare meadow | Female | English |
| Harry | estate ruler | Male | English |
| Harry | estate ruler | Male | English |
| Higgins | Intelligent
| Male | |
| Hobo | A homeless person | Unisex | |
| Hobo | A homeless person | Unisex | |
| Hollie | Holly | Unisex | English |
| Holly | Holy
| Female | English |
| Holstein | | Unisex | Hebrew |
| Honey | Term of endearment. Sweet syrup produced by bees | Female | Word |
| Humdinger | | Unisex | Hebrew |
| Hunter | A hunter. One who searches for something | Male | English |
| Isis | throne | Female | Egyptian |
| Ivan | Form of John | Male | Russian |
| Jack | after the Georgetown University mascot, Jack the Bulldog | Male | English |
| Jack | From John - God's gracious gift | Male | English |
| Jackjack | | Unisex | Hebrew |
| Jackson | Son of Jack | Male | English |
| Jake | From Jacob - To fill the place of another | Male | Hebrew |
| Jasmin | A flower name from the older form Jessamine.
| Female | |