| Name | Meaning | Gender | Origin |
|---|
| Klaus | Victory of the people | Male | Greek |
| Kong | Empty, hollow, void | Male | Chinese |
| Kyle | Church | Male | Gaelic |
| Lady | Lady | Unisex | English |
| Lance | Territory | Male | German |
| Lenny | Brave lion | Unisex | German |
| Leo | Lion | Male | Latin |
| Leonard | Strong as the lion | Male | Germanic |
| Leopold | Bold people | Male | Germanic |
| Lincoln | Lake settlement, lake colony | Male | English |
| Lizzy | My God is a vow | Unisex | Hebrew |
| Luca | Man from Lucania | Unisex | Greek |
| Lucky | Fortunate | Unisex | English |
| Ludwig | Fame and war | Male | Germanic |
| Mac | Son of | Male | Gaelic |
| Magnum | A large type of wine bottle. | Unisex | English |
| Maisy | Pearl. Variant Of Margaret. | Unisex | English |
| Mandel | Almond | Unisex | German |
| Manley | Common clearing | Male | English |
| Marco | From the god Mars | Male | Latin |
| Max | Little Maximus | Male | Latin |
| Maxi | Pet form of names starting with Max | Unisex | English |
| Maxwell | Maccus's stream | Male | English |
| Mel | Uncertain, possibly bad town | Unisex | English |
| Meryl | Bright as the sea | Unisex | Gaelic |
| Miles | Uncertain, perhaps peaceful | Male | Germanic |
| Milo | Uncertain, perhaps peaceful | Male | Germanic |
| Mitzi | Uncertain, maybe bitter | Unisex | Hebrew |
| Moose | Largest member of the deer family. Moose have heavy brown bodies with humped shoulders and broad antlers. | Unisex | English |
| Mortimer | Dead sea | Male | French |