| Name | Meaning | Gender | Origin |
|---|
| Kishi | Beach, seashore | Unisex | Japanese |
| Klaus | Victory of the people | Male | Greek |
| Knox | Round-topped hill | Male | English |
| Ladd | Attendant | Male | English |
| Laddie | Young Attendant | Male | English |
| Lady | Lady | Unisex | English |
| Lancelot | Knight Of Arthur And Lover Of Guinevere | Male | French |
| Lennon | Descendant of Leannán or Lonán | Male | Gaelic |
| Liam | Will, desire and helmet, protection | Male | Germanic |
| Lizzie | My God is a vow | Unisex | Hebrew |
| London | From London | Male | English |
| Louie | Fame and war | Male | Germanic |
| Lucky | Fortunate | Unisex | English |
| Ludwig | Fame and war | Male | Germanic |
| Lynne | A Cascade | Unisex | English |
| Maddock | Good | Male | Welsh |
| Maestro | | Unisex | Hebrew |
| Magnus | Great | Male | Latin |
| Mako | Child of truth | Unisex | Japanese |
| Malo | Winner | Male | Arabic |
| Manfred | Peaceful strength | Male | Germanic |
| Marlin | A Form Of Merle. | Unisex | English |
| Marquis | Lord of the marches | Male | French |
| Marvin | Uncertain, possibly eminent marrow | Male | Welsh |
| Mauro | Moor | Male | Latin |
| Max | Little Maximus | Male | Latin |
| Maxie | Pet form of names starting with Max | Unisex | English |
| Merlin | Sea fort | Male | Welsh |
| Mick | Who is like God? | Male | Hebrew |
| Mickey | Who is like God? | Unisex | Hebrew |