| Name | Meaning | Gender | Origin |
|---|
| Keelan | Slender and fair | Unisex | Gaelic |
| Keely | Beautiful | Female | Gaelic |
| Keira | Dark | Female | Gaelic |
| Kelly | War | Female | Gaelic |
| Kelvin | From the River Clyde | Male | English |
| Kemp | Battler, fighter, warrior | Male | English |
| Kenda | Valley of the River Kent | Female | Gaelic |
| Kendall | Valley of the River Kent | Female | Gaelic |
| Kenley | Wolf head | Male | Gaelic |
| Kent | Uncertain, perhaps coastal region | Male | English |
| Kermit | Son of the one without envy | Male | Gaelic |
| Kerry | Country of the children of Ciar | Female | Gaelic |
| Kevin | Beautiful at birth | Male | Gaelic |
| Kimball | Bold Kin. | Unisex | English |
| Kimberley | Variable prefix + forest clearing | Unisex | English |
| Kimmy | Variable prefix + forest clearing | Female | English |
| King | King's forest clearing | Male | English |
| Ladd | Attendant | Male | English |
| Lady | Lady | Unisex | English |
| Lainey | Torch | Female | Greek |
| Laird | Lord | Male | English |
| Lancelot | Knight Of Arthur And Lover Of Guinevere | Male | French |
| Lane | Lane | Unisex | English |
| Lark | Bird | Female | English |
| Latimer | Keeper of records in Latin | Male | English |
| Leith | A harbour in Scotland | Male | Gaelic |
| Leland | Land lying fallow | Male | English |
| Lennon | Descendant of Leannán or Lonán | Male | Gaelic |
| Lennox | From Levenach | Male | Gaelic |
| Leslie | Holly Garden | Female | Gaelic |