| Name | Meaning | Gender | Origin |
|---|
| Jesse | wealthy | Male | Hebrew |
| Jett | Jet Black Gem | Male | English |
| Jezebel | follower of idols | Female | Hebrew |
| Jimmy | supplanter | Male | English |
| Jinx | Charm, Spell | Female | Latin |
| Joaquin | Abbreviation of the Hebrew name Jehoichin meaning Jehovah has established. Joaquin Miller the colorful 19th century poet-adventurer of the American west.
| Male | Spanish |
| John | God is merciful | Male | Hebrew |
| Jordan | The descending river, to flow | Male | Hebrew |
| Josey | God Will Increase | Unisex | English |
| Josh | God Saves | Unisex | English |
| Juice | | Unisex | Hebrew |
| Jules | youthful; soft, downy | Male | |
| Julius | after Julius Caesar | Male | Latin |
| June | 6Th Month | Female | English |
| Justice | Just, Fairness | Female | English |
| Kai | Fire
| Male | Hawaiian |
| Kaiser | Any of the emperors of The Holy Roman Empire, Austria or Germany | Unisex | |
| Kato | second of twins | Male | African |
| Killian | church | Male | Irish |
| King | King's field. King is one of several titles occasionally used as given names.
| Male | English |
| Kip | From The Pointed Hill | Unisex | English |
| Koda | | Male | |
| Kojak | | Male | Hebrew |
| Lana | Attractive | Female | English |
| Lara | citadel | Female | Russian |