| Name | Meaning | Gender | Origin |
|---|
| Kevin | Beautiful at birth | Male | Gaelic |
| Killer | | Unisex | Hebrew |
| King | King's forest clearing | Male | English |
| Kishi | Beach, seashore | Unisex | Japanese |
| Kit | Bearer of Christ | Unisex | Greek |
| Kong | Empty, hollow, void | Male | Chinese |
| Lady | Lady | Unisex | English |
| Leo | Lion | Male | Latin |
| Leon | Lion | Male | Latin |
| Leroy | The king | Male | French |
| Lincoln | Lake settlement, lake colony | Male | English |
| Lizzie | My God is a vow | Unisex | Hebrew |
| Lizzy | My God is a vow | Unisex | Hebrew |
| Logan | Hollow | Unisex | Gaelic |
| Lou | Fame and war | Male | Germanic |
| Lucian | Light | Male | Latin |
| Lucky | Fortunate | Unisex | English |
| Luke | Man from Lucania | Male | Greek |
| Mac | Son of | Male | Gaelic |
| Magnum | A large type of wine bottle. | Unisex | English |
| Manley | Common clearing | Male | English |
| Marcus | From the god Mars | Male | Latin |
| Mason | Bricklayer | Male | French |
| Max | Little Maximus | Male | Latin |
| Maxi | Pet form of names starting with Max | Unisex | English |
| Mick | Who is like God? | Male | Hebrew |
| Midnight | Intense darkness, the middle of the night | Unisex | English |
| Milo | Uncertain, perhaps peaceful | Male | Germanic |
| Moose | Largest member of the deer family. Moose have heavy brown bodies with humped shoulders and broad antlers. | Unisex | English |
| Moses | Drawn out of the water | Male | Hebrew |