| Name | Meaning | Gender | Origin |
|---|
| 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 |
| Jennifer | white shadow, white wave | Female | Cornish |
| Jill | youthful | Female | English |
| Joey | Abbreviation of Joseph.
| Male | |
| Joey | Abbreviation of Joseph.
| Male | |
| Josie | From Josephine - She shall add. | Female | English |
| Julia | Youthful
| Female | Latin |
| Juliet | youthful | Female | English |
| Justin | just, true | Male | Latin |
| Kahlua | | Unisex | |
| Kate | Pure | Female | English |
| Katie | Variant of Katherine. Pure.
| Female | English |
| Kayla | crown of laurels | Female | Arabic |
| Kelsey | Ceol's island, beautiful island; from the ship's island, shipping harbor | Female | English |
| Kiki | From Enriqueta - Pet | Female | |
| Kiki | From Enriqueta - Pet | Female | |
| Klaus | Scandinavian and German variation of Nicolas | Male | |
| Kobe | tortoise | Male | Swahili |
| Kona | Dark rich coffee blend from Hawaii. | Unisex | |
| Lacey | Cheerful One | Female | English |
| Lady | A female title of nobility. | Female | |
| Layla | night | Female | Arabic |
| Layla | night | Female | Arabic |