| Name | Meaning | Gender | Origin |
|---|
| Jasper | Black stone
| Male | Persian |
| Jean | God is gracious | Male | |
| Jennie | English, God's gracious gift | Female | English |
| Jenny | Diminutive of Jane and Jennifer.
| Female | English |
| Jenny | Diminutive of Jane and Jennifer.
| Female | English |
| Jim | supplanter | Male | English |
| John | God is merciful | Male | Hebrew |
| Judd | praised | Male | Medieval |
| Julia | Youthful
| Female | Latin |
| 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 |
| June | 6Th Month | Female | English |
| Kara | pure | Female | English |
| Kate | Pure | Female | English |
| Kelly | Lively: aggressive.
| Female | Irish |
| Kelsey | Ceol's island, beautiful island; from the ship's island, shipping harbor | Female | English |
| Kiefer | barrel-maker | Male | |
| Kiki | From Enriqueta - Pet | Female | |
| Kiki | From Enriqueta - Pet | Female | |
| Klee | Sweet | Male | User Contributed |
| Leah | cow, weary one; glad tidings; mistress, ruler | Female | Hebrew |
| Lee | Healer
| Male | English |
| Leon | lion | Male | Greek |
| Leonardo | Lion-bold. Leonardo da Vinci is considered by many to be the most brilliant and creative men who ever lived.
| Male | Italian |
| Leslie | dweller in the gray castle; small meadow | Female | Scottish |
| Lila | night | Female | Arabic |