| Name | Meaning | Gender | Origin |
|---|
| Kaiser | Emperor: Variant Of Caesar. | Male | Latin |
| Karl | Free man | Male | Germanic |
| Karla | Free man | Female | German |
| Kasper | Treasurer | Unisex | Persian |
| Katie | Pure | Female | Greek |
| Kato | [Pure] | Male | Greek |
| Katrina | Pure | Female | Greek |
| Kay | Pure | Male | Greek |
| Keifer | Barrel-maker | Male | German |
| Kerry | Country of the children of Ciar | Female | Gaelic |
| King | King's forest clearing | Male | English |
| Kishi | Beach, seashore | Unisex | Japanese |
| Klaus | Victory of the people | Male | Greek |
| Kong | Empty, hollow, void | Male | Chinese |
| Kyle | Church | Male | Gaelic |
| Lady | Lady | Unisex | English |
| Lance | Territory | Male | German |
| Lara | From the ancient city Larisa. | Female | Russian |
| Leah | Weary | Female | Hebrew |
| Lenny | Brave lion | Unisex | German |
| Leo | Lion | Male | Latin |
| Leona | Lion | Female | Latin |
| Leonard | Strong as the lion | Male | Germanic |
| Leopold | Bold people | Male | Germanic |
| Liesel | My God is a vow | Female | Hebrew |
| Lily | Lily | Female | English |
| Lincoln | Lake settlement, lake colony | Male | English |
| Lindsay | Uncertain, perhaps dark lake | Female | Gaelic |
| Lizzy | My God is a vow | Unisex | Hebrew |
| Lois | Battle Maiden | Female | Greek |