| Name | Meaning | Gender | Origin |
|---|
| Hunter | A hunter. One who searches for something | Male | English |
| Hyperion | | Unisex | Hebrew |
| Ishmael | outcast | Male | Hebrew |
| Ivory | The hard, smooth, yellowish-white of an elephant's tusk. | Male | Word |
| 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 |
| James | From Jacob - To fill the place of another, supplanter. | Male | English |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jett | Jet Black Gem | Male | English |
| Jezabel | | Unisex | Hebrew |
| John | God is merciful | Male | Hebrew |
| Jordan | The descending river, to flow | Male | Hebrew |
| Kala | time, black | Unisex | |
| Kane | tribute, warrior; the doubly-accomplished, golden; man, the eastern sky; beautiful | Male | Celtic |
| Kazimir | To Destroy Peace | Unisex | Russian |
| Keenan | Ancient
| Male | Irish |
| Keiran | Little, Dark | Unisex | Celtic |
| Killian | church | Male | Irish |
| Labyrinth | | Unisex | Hebrew |
| Lace | From Lassy, Normandy | Unisex | English |
| Lance | knight's attendant; land | Male | English |
| Lancelot | Knight of Arthur and lover of Guinevere
| Male | |