| Name | Meaning | Gender | Origin |
|---|
| Jay | jaybird | Male | Latin |
| Jericho | Place In Israel | Male | Hebrew |
| Jet | A deep black colour. Aircraft engine that propels an aircraft forward by expelling exhaust gases toward the rear. | Male | Mineral |
| Jetta | jet | Female | English |
| Jewel | Jewel
| Female | Word |
| Jezebel | follower of idols | Female | Hebrew |
| Jonquil | Reed | Female | English |
| Jordan | The descending river, to flow | Male | Hebrew |
| June | 6Th Month | Female | English |
| Juniper | Juniper Tree | Female | English |
| Jupiter | Zeus, Father | Male | Roman |
| Kai | Fire
| Male | Hawaiian |
| Kashmir | Name Of A State In India Kasi | Female | Hindi |
| Kaya | my elder sister | Female | Native |
| 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 |
| 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 |
| Kenya | Animal Horn | Female | Hebrew |
| Kerry | dark, dark-haired | Male | Irish |
| Kim | chief | Male | English |
| Kimberly | Cyneburga's Royal Forest, Meadow | Female | English |
| Kingston | From the king's village or estate King's field. King is one of several titles occasionally used as given names.
| Male | English |