| Name | Meaning | Gender | Origin |
|---|
| Jet | Black gemstone | Unisex | English |
| Jett | Black gemstone | Male | English |
| Job | Hated | Male | Hebrew |
| Jynx | Charm, Spell | Unisex | Latin |
| Kai | Rejoice | Male | Finnish |
| Keenan | Descendant of Cathán | Male | Gaelic |
| Ken | Born of fire | Male | Gaelic |
| Kieran | Little dark one | Male | Gaelic |
| Killer | | Unisex | Hebrew |
| King | King's forest clearing | Male | English |
| Knox | Round-topped hill | Male | English |
| Kyran | Little dark one | Male | Gaelic |
| Leif | Descendant | Male | Norse |
| Lestat | | Unisex | Hebrew |
| Liam | Will, desire and helmet, protection | Male | Germanic |
| Licorice | Confection made from the licorice root. | Unisex | English |
| Lindy | Variant Of Linda Lime Tree: Linden Tree: Beautiful. | Unisex | English |
| Lizzy | My God is a vow | Unisex | Hebrew |
| Luke | Man from Lucania | Male | Greek |
| Magic | Possessing qualities that produce baffling effects | Unisex | English |
| Magpie | | Unisex | Hebrew |
| Medusa | Cunning | Unisex | English |
| Merlin | Sea fort | Male | Welsh |
| Midnight | Intense darkness, the middle of the night | Unisex | English |
| Mischief | One that causes minor trouble or disturbances | Unisex | English |
| Mohan | Enchanting | Male | Sanskrit |
| Monster | A creature of frightening appearance | Unisex | English |
| Moondust | | Unisex | Hebrew |
| Moonlight | | Unisex | Hebrew |
| Mystic | | Unisex | Hebrew |