| Name | Meaning | Gender | Origin |
|---|
| Kani | Music | Unisex | Hawaiian |
| Keanu | Cool breeze over mountains | Unisex | Hawaiian |
| Kelley | War | Unisex | Gaelic |
| Kennedy | Armored head | Male | Gaelic |
| Kiefer | Barrel-maker | Male | German |
| Killer | | Unisex | Hebrew |
| King | King's forest clearing | Male | English |
| Kishi | Beach, seashore | Unisex | Japanese |
| Kiwi | | Unisex | Hebrew |
| Klondike | | Unisex | Hebrew |
| Knut | Knot | Male | Norse |
| Kody | Descendant of Cuidighthigh | Male | Gaelic |
| Kona | World rule | Unisex | Gaelic |
| Lady | Lady | Unisex | English |
| Leon | Lion | Male | Latin |
| Lucky | Fortunate | Unisex | English |
| Luke | Man from Lucania | Male | Greek |
| Magic | Possessing qualities that produce baffling effects | Unisex | English |
| Magnum | A large type of wine bottle. | Unisex | English |
| Maverick | Dissenter | Unisex | English |
| Max | Little Maximus | Male | Latin |
| Maximus | The greatest | Male | Latin |
| Mickey | Who is like God? | Unisex | Hebrew |
| Mocha | Coffee of high quality. | Unisex | English |
| Moe | Moor | Male | Latin |
| Monty | Gomeric's hill | Male | French |
| Moose | Largest member of the deer family. Moose have heavy brown bodies with humped shoulders and broad antlers. | Unisex | English |
| Murphy | Sea warrior | Male | Gaelic |
| Nemo | No one | Male | Latin |
| Nero | Stern | Male | Latin |