| Name | Meaning | Gender | Origin |
|---|
| Justin | just, true | Male | Latin |
| Kahlan | after the character in Terry Goodkind's Sword of Truth novels | Unisex | |
| Kai | Fire
| Male | Hawaiian |
| Kana | Powerful | Unisex | Japanese |
| Kari | curly hair | Male | Norse |
| Ken | Male Barbie Doll. | Male | English |
| Kenji | after Michael Kenji Shinoda, from the band Linkin Park | Male | Japanese |
| Kevin | handsome | Male | Irish |
| Killian | church | Male | Irish |
| Kingston | From the king's village or estate King's field. King is one of several titles occasionally used as given names.
| Male | English |
| Kriangsak | | Unisex | |
| Krishna | dark, black | Male | Sanskrit |
| Lance | knight's attendant; land | Male | English |
| Leo | Lion.
| Male | Latin |
| Leonard | lion-hearted | Male | |
| Leonardo | Lion-bold. Leonardo da Vinci is considered by many to be the most brilliant and creative men who ever lived.
| Male | Italian |
| Leonid | Lion | Male | Russian |
| Leopold | after Leopoldo in the movie Blood and Roses | Male | |
| Levi | United | Male | Hebrew |
| Liam | Form of William.
| Male | Irish |
| Lincoln | Capital of Nebraska, USA. Old English: home by the pond | Male | English |
| Locke | after the philosopher John Locke | Male | English |
| Logan | little hollow | Male | Scottish |
| Lord | A male title of nobility. | Male | English |
| Lou | Famous Warrior | Male | English |