| Name | Meaning | Gender | Origin |
|---|
| 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 |
| 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 |
| Lars | after the Metallica drummer Lars Ulrich | Male | Scandinavian |
| Lee | Healer
| Male | English |
| Lennox | amid the lems, from the field of elm trees | Male | Scottish |
| Lenny | brave lion | Male | English |
| Leo | Lion.
| Male | Latin |
| Leon | lion | Male | Greek |
| Levi | United | Male | Hebrew |
| Lewis | Renowned fighter. Form of Louis.
| Male | English |
| Lex | Protector Of Mankind | Male | English |
| Liam | Form of William.
| Male | Irish |