| Name | Meaning | Gender | Origin |
|---|
| Kemp | Battler, fighter, warrior | Male | English |
| Kenley | Wolf head | Male | Gaelic |
| Kent | Uncertain, perhaps coastal region | Male | English |
| Kermit | Son of the one without envy | Male | Gaelic |
| Kevin | Beautiful at birth | Male | Gaelic |
| Kimball | Bold Kin. | Unisex | English |
| Kimberley | Variable prefix + forest clearing | Unisex | English |
| King | King's forest clearing | Male | English |
| Kishi | Beach, seashore | Unisex | Japanese |
| Ladd | Attendant | Male | English |
| Lady | Lady | Unisex | English |
| Laird | Lord | Male | English |
| Lancelot | Knight Of Arthur And Lover Of Guinevere | Male | French |
| Lane | Lane | Unisex | 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 |
| Lexy | Defending men | Unisex | Greek |
| Logan | Hollow | Unisex | Gaelic |
| London | From London | Male | English |
| Lucky | Fortunate | Unisex | English |
| Maddock | Good | Male | Welsh |
| Maddox | Good | Unisex | Welsh |
| Maitland | From The Meadow | Male | English |
| Malcolm | Columba's servant | Male | Gaelic |
| Manfred | Peaceful strength | Male | Germanic |
| Manley | Common clearing | Male | English |
| Marlon | Little Falcon | Male | English |
| Marshall | Horse servant | Male | Germanic |