| Name | Meaning | Gender | Origin |
|---|
| Katherine | Pure. Used since third century A.D. Early Latin forms Katerina and Caterina became Katharine and Catherine. French Cateline and English Catlyn came into wider use during medieval period when variants multiplied.
| Female | Greek |
| Katniss | | Female | |
| Katniss | | Female | |
| Keanu | cool breeze over the mountains | Male | Hawaiian |
| Kim | chief | Male | English |
| Kipling | after Rudyard Kipling, writer | Unisex | |
| Kismet | fate, destiny | Female | Word |
| Kodiak | Large Alaskan brown bear. | Female | Russian |
| Lachlan | From the land of lakes.
| Male | Scottish |
| Lana | Attractive | Female | English |
| Lane | narrow road | Male | English |
| Lazarus | God's help | Male | Greek |
| Leander | lion man | Male | Greek |
| Leland | from the meadow land | Male | English |
| Leon | lion | Male | Greek |
| 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 |
| Leopold | after Leopoldo in the movie Blood and Roses | Male | |
| Lionel | Cousin of Lancelot
| Male | Latin |
| Lorelei | from the Rhine River | Female | |
| Lorenzo | Form of Lawrence. Lorenzo de' Medici was a patron of Michaelangelo and Da Vinci.
| Male | Italian |
| Louisiana | | Female | Hebrew |
| Lucia | Light | Female | Italian |
| Lucy | light: illumination.
| Female | English |
| Lullaby | | Unisex | |