| Name | Meaning | Gender | Origin |
|---|
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jaws | Bones that form the mouth. A dangerous situation - "The Jaws of Death" | Unisex | |
| Jazz | The romantic music
| Male | Word |
| Jed | the hand | Male | English |
| Jessie | wealthy | Female | Anglicized |
| Jester | A fool at medieval courts | Unisex | |
| Jet | A deep black colour. Aircraft engine that propels an aircraft forward by expelling exhaust gases toward the rear. | Male | Mineral |
| Jordon | Flow, Descend | Unisex | English |
| Joy | From Joyce - Gay and joyful | Female | Word |
| Julian | Jove's child. Form of Julius and family clan name of several powerful Roman emperors. Biblical Roman centurion Julius saved Paul's life during a hazardous voyage
| Male | English |
| Julius | after Julius Caesar | Male | Latin |
| Juno | queen of the heavens | Female | Latin |
| Justice | Just, Fairness | Female | English |
| Justus | Just | Male | Roman |
| Kane | tribute, warrior; the doubly-accomplished, golden; man, the eastern sky; beautiful | Male | Celtic |
| King | King's field. King is one of several titles occasionally used as given names.
| Male | English |
| Koda | | Male | |
| Kyrie | Lord, Ruler | Unisex | Latin |
| Lacey | Cheerful One | Female | English |
| Lady | A female title of nobility. | Female | |
| Lana | Attractive | Female | English |
| Leo | Lion.
| Male | Latin |
| Lily | Lily
| Female | English |
| Lita | Light | Female | Latin |