| Name | Meaning | Gender | Origin |
|---|
| Huxley | inhospitable place | Male | English |
| 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 |
| Jacob | The supplanter, held by the heel | Male | Hebrew |
| Jax | God has been gracious: has shown favor. Based on John or Jacques.
| Male | Modern |
| Jet | A deep black colour. Aircraft engine that propels an aircraft forward by expelling exhaust gases toward the rear. | Male | Mineral |
| Joe | Abbreviation of Joseph.
| Male | English |
| Joe | Abbreviation of Joseph.
| Male | English |
| Johnson | Son of John
| Male | English |
| Kai | Fire
| Male | Hawaiian |
| Kane | tribute, warrior; the doubly-accomplished, golden; man, the eastern sky; beautiful | Male | Celtic |
| Kazooie | | Unisex | Hebrew |
| Keith | wood, wind; wood-dweller | Male | Scottish |
| Ken | Male Barbie Doll. | Male | English |
| Kirby | church settlement | Male | Norse |
| Koopa | | Unisex | Hebrew |
| Lance | knight's attendant; land | Male | English |
| Lane | narrow road | Male | English |
| Leo | Lion.
| Male | Latin |
| Leon | lion | Male | Greek |
| Leroy | The king.
| Male | |
| Lightning | | Unisex | Hebrew |
| Link | English, town by the pool | Male | Word |
| Locke | after the philosopher John Locke | Male | English |