| Name | Meaning | Gender | Origin |
|---|
| Kit Karson | | Unisex | Hebrew |
| Kitbull | | Unisex | Hebrew |
| Kitkat | | Unisex | Hebrew |
| Kiwi | | Unisex | Hebrew |
| Kobi | | Unisex | Hebrew |
| Koda | | Male | |
| Kodiak | Large Alaskan brown bear. | Female | Russian |
| Kona | Dark rich coffee blend from Hawaii. | Unisex | |
| Kookaburra | | Unisex | Hebrew |
| Kozmo | | Unisex | Hebrew |
| Kruger | | Unisex | Hebrew |
| Kunz | Honest Advisor | Unisex | German |
| Kylie | Boomerang. Feminine form of Kyle.
| Female | Aboriginal |
| Labyrinth | | Unisex | Hebrew |
| Lady | A female title of nobility. | Female | |
| Lafayette | Hound Dog from the AristoCats
| Male | |
| Lamar | land | Male | English |
| Lance | knight's attendant; land | Male | English |
| Lancelot | Knight of Arthur and lover of Guinevere
| Male | |
| Larissa | name of a city, mythical woman; cheerful one | Female | Ltin |
| Lastat | | Unisex | Hebrew |
| Laszlo | after the character in the movie Real Genius | Male | Hungarian |
| Latte | Expresso coffee mixed with steamed milk - a caf latte. | Male | |
| Laura | bay laurel | Female | Latin |
| Lava | Moulton Earth | Unisex | English |