| Name | Meaning | Gender | Origin |
|---|
| Lucille | Light | Female | Latin |
| Lucky | Fortunate | Unisex | English |
| Lucy | Light | Female | Latin |
| Luke | Man from Lucania | Male | Greek |
| Luz | Light | Female | Spanish |
| Maddy | Pet form of Mad- names | Female | English |
| Maggie | Pearl | Female | Greek |
| Magic | Possessing qualities that produce baffling effects | Unisex | English |
| Magnum | A large type of wine bottle. | Unisex | English |
| Mara | Bitter | Female | Hebrew |
| Margot | Pearl | Female | Greek |
| Marnie | Pet form of Marna | Female | English |
| Maverick | Dissenter | Unisex | English |
| Max | Little Maximus | Male | Latin |
| Maximus | The greatest | Male | Latin |
| Maya | Uncertain, perhaps mother or great one | Female | Greek |
| Mickey | Who is like God? | Unisex | Hebrew |
| Mimi | Uncertain, maybe bitter | Female | Hebrew |
| Missy | Bee | Female | Greek |
| Misty | Misty | Female | English |
| Mocha | Coffee of high quality. | Unisex | English |
| Moe | Moor | Male | Latin |
| Molly | Uncertain, maybe bitter | Female | Hebrew |
| 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 |
| Nelly | Abbreviation Of Eleanor Shining Light. | Female | English |
| Nemo | No one | Male | Latin |
| Nero | Stern | Male | Latin |
| Nicola | Victory of the people | Female | Greek |