| Name | Meaning | Gender | Origin |
|---|
| Holmes | From the river island
| Male | English |
| Homer | promise | Male | Greek |
| Homey | | Unisex | Hebrew |
| Hooch | | Unisex | Hebrew |
| Hoops | | Unisex | Hebrew |
| Horseshoe | | Unisex | Hebrew |
| Hubert | bright, shining intellect | Male | |
| Hulk | | Unisex | Hebrew |
| Indian Ink | | Unisex | |
| Inferno | | Unisex | Hebrew |
| Ink | | Unisex | |
| Inka | Mythical Fertility God | Unisex | German |
| Inky | | Unisex | Hebrew |
| Jack | after the Georgetown University mascot, Jack the Bulldog | Male | English |
| Jack | From John - God's gracious gift | Male | English |
| Jagger | a teamster | Male | English |
| Jake | From Jacob - To fill the place of another | Male | Hebrew |
| Java Bean | | Unisex | Hebrew |
| Jester | A fool at medieval courts | Unisex | |
| Jet | A deep black colour. Aircraft engine that propels an aircraft forward by expelling exhaust gases toward the rear. | Male | Mineral |
| Jet Black | | Unisex | |
| Joker | | Male | Hebrew |
| Jughead | | Unisex | Hebrew |
| Kanye | after the rap artist Kanye West | Male | African |
| Kegger | | Unisex | Hebrew |