| 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 |
| Kathleen | Innocent
| Female | Anglicized |
| Katie | Variant of Katherine. Pure.
| Female | English |
| Keith | wood, wind; wood-dweller | Male | Scottish |
| Kenny | English, born of fire, handsome | Male | English |
| Kevin | handsome | Male | Irish |
| Kimberly | Cyneburga's Royal Forest, Meadow | Female | English |
| Kit | Nickname for Christopher. Frontiersman Kit Carson.
| Male | English |
| Larry | Abbreviation of Lawrence or Laurence often used as an independent name.
| Male | English |
| Laura | bay laurel | Female | Latin |
| Lee | Healer
| Male | English |
| Lela | Night | Unisex | Arabic |
| Lena | Alluring, Temptress, Light | Female | Greek |
| Leo | Lion.
| Male | Latin |
| Leon | lion | Male | Greek |
| Leona | Like A Lion | Female | French |
| Leonard | lion-hearted | Male | |
| Leroy | The king.
| Male | |
| Leslie | dweller in the gray castle; small meadow | Female | Scottish |
| Lester | Fortified place.
| Male | English |
| Lewis | Renowned fighter. Form of Louis.
| Male | English |
| Lillian | lily, a flower | Female | English |
| Lillie | Lily | Unisex | English |
| Linda | pretty | Female | |
| Lionel | Cousin of Lancelot
| Male | Latin |