| Name | Meaning | Gender | Origin |
|---|
| Kahuna | | Unisex | |
| Kai | Fire
| Male | Hawaiian |
| Karma | Fate or destiny (Hinduism and Buddhism) | Female | Hindi |
| Kat | pure | Female | English |
| Katmandu | | Male | Hebrew |
| Katniss | | Female | |
| Katniss | | Female | |
| Keeks | | Unisex | Hebrew |
| Keeper | | Unisex | Hebrew |
| Kerplunk | | Unisex | Hebrew |
| Khan | An Indian ruler or official | Unisex | |
| King | King's field. King is one of several titles occasionally used as given names.
| Male | English |
| Kismet | fate, destiny | Female | Word |
| Kit Kat | | Unisex | |
| Kit Kat | | Unisex | |
| Klondike | | Male | Hebrew |
| Knight | Noble, Soldier | Male | English |
| Kuma | Bear (Japanese). Also to call - kuma (come) here. | Unisex | |
| Kwai | | Unisex | Hebrew |
| Lambchop | | Unisex | Hebrew |
| Lance | knight's attendant; land | Male | English |
| Lancelot | Knight of Arthur and lover of Guinevere
| Male | |
| Lara | citadel | Female | Russian |
| Latifa | Pleasant, Gentle | Unisex | Arabic |
| Legolas | Tolkien, Lord of the Rings | Unisex | |