| Kiernan | Surname. | Male |
| Kikka | Mistress Of All | Female |
| Kildare | From County Kildare | Male |
| Kinsey | Victorious | Male |
| Kit | Nickname For Christopher. Frontiersman Kit Carson. | Male |
| Kohana | Sioux Name Meaning " Swift." | Male |
| Kuno | Honest Advisor | Male |
| Kwesi | Akan Of Ghana Unisexual Name Meaning "Born On Sunday." | Female |
| Langley | Englishman | Male |
| Laban | White | Male |
| Ladislav | Meaning Unknown | Male |
| Laili | Nightfall | Female |
| Laird | Lord | Male |
| Lakshmi | Myth Name (Goddess Of Fortune) | Female |
| Lambert | Light Of Land | Male |
| Lamont | Man Of Law | Male |
| Lance | Servant | Male |
| Lang | Sweet Potato | Female |
| Laszlo | Famous Ruler | Male |
| Latimer | Interprets Latin | Male |
| Laurence | From The Place Of Laurel Trees. | Male |
| Lavinia | Woman Of Rome | Female |
| Leander | Lion | Male |
| Leilani | "Heavenly Flower, Heavenly Child" | Male |
| Leith | River | Male |