| Name | Meaning | Gender | Origin |
|---|
| Jessie | God is gracious | Female | Hebrew |
| Jett | Black gemstone | Male | English |
| Jezebel | Chaste, unmarried | Female | Hebrew |
| Jin | Gold | Female | Chinese |
| Jinx | Magic charm | Female | Latin |
| June | The sixth month of the year | Female | English |
| Junior | Younger | Male | English |
| Justine | Righteous, just, fair | Female | Latin |
| Kaiser | Emperor: Variant Of Caesar. | Male | Latin |
| Katie | Pure | Female | Greek |
| Kayleigh | Descendant of Caollaidhe | Female | Gaelic |
| Keeley | Beautiful | Female | Gaelic |
| Kelly | War | Female | Gaelic |
| Kewpie | | Unisex | Hebrew |
| Kia | Pet form of Kiana | Female | English |
| Killer | | Unisex | Hebrew |
| Kim | Regal hill | Male | English |
| Kyle | Church | Male | Gaelic |
| Lady | Lady | Unisex | English |
| Lala | Tulip | Female | Persian |
| Lara | From the ancient city Larisa. | Female | Russian |
| Laurie | Laurel | Female | Latin |
| Lee | Clearing, meadow | Female | English |
| Leo | Lion | Male | Latin |
| Li | Unisexual Name Meaning "Strength; Beautiful" | Male | English |
| Lian | Unisexual Name Meaning "The Graceful Willow" | Female | Latin |
| Licorice | Confection made from the licorice root. | Unisex | English |
| Lily | Lily | Female | English |
| Ling | Delicate | Female | Chinese |
| Lola | Sorrows | Female | Spanish |