| Name | Meaning | Gender | Origin |
|---|
| Jarrett | Irish variation of Gerard, spear strength | Male | English |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jax | God has been gracious: has shown favor. Based on John or Jacques.
| Male | Modern |
| Jett | Jet Black Gem | Male | English |
| Jim | supplanter | Male | English |
| June | 6Th Month | Female | English |
| Juniper | Juniper Tree | Female | English |
| Justice | Just, Fairness | Female | English |
| Kai | Fire
| Male | Hawaiian |
| Kane | tribute, warrior; the doubly-accomplished, golden; man, the eastern sky; beautiful | Male | Celtic |
| Kate | Pure | Female | English |
| Keanu | cool breeze over the mountains | Male | Hawaiian |
| Kendra | Blend of Ken: (royal obligation:clear water) and Sandra: (protector of man) or Andrea: (manly or masculine).
| Female | English |
| Konrad | Bold, Wise Councelor | Unisex | German |
| Kyra | throne | Female | Feminine |
| Lara | citadel | Female | Russian |
| Leaf | | Male | |
| Leopold | after Leopoldo in the movie Blood and Roses | Male | |
| Levi | United | Male | Hebrew |
| Lewis | Renowned fighter. Form of Louis.
| Male | English |
| Lilac | Bluish Purple | Female | Latin |
| Lilly | Lily | Female | English |
| Lincoln | Capital of Nebraska, USA. Old English: home by the pond | Male | English |