| Name | Meaning | Gender | Origin |
|---|
| Jenny | Diminutive of Jane and Jennifer.
| Female | English |
| Jenny | Diminutive of Jane and Jennifer.
| Female | English |
| John | God is merciful | Male | Hebrew |
| Jonah | Dove. In the bible Jonah was on board a ship God caused to sink: sailors traditionally use the name Jonah to personify someone who brings bad luck.
| Male | Hebrew |
| Jordan | The descending river, to flow | Male | Hebrew |
| Jordana | Down flowing. The river in Palestine where Jesus was baptized has been used as a given name since the Crusades.
| Female | Hebrew |
| Jori | Descending
| Male | |
| Julep | Rosewater | Unisex | Persian |
| Jupiter | Zeus, Father | Male | Roman |
| Kai | Fire
| Male | Hawaiian |
| Kairi | sea | Female | Japanese |
| Kali | after the Indian goddess of death | Female | Sanskrit |
| Kara | pure | Female | English |
| Kari | curly hair | Male | Norse |
| Kavan | battle | Male | |
| Kawaii | | Unisex | |
| Keesha | Her Life | Unisex | African |
| Kelby | Dark: dark-haired.
| Male | English |
| Kelly | Lively: aggressive.
| Female | Irish |
| Kelsey | Ceol's island, beautiful island; from the ship's island, shipping harbor | Female | English |
| Kelvin | name of a river; from the narrow river | Male | Scottish |
| Ken | Male Barbie Doll. | Male | English |
| Kendall | ruler of the valley | Female | English |
| Kendra | Blend of Ken: (royal obligation:clear water) and Sandra: (protector of man) or Andrea: (manly or masculine).
| Female | English |
| Keyara | Beautiful river.
| Female | |