| Name | Meaning | Gender | Origin |
|---|
| Lucky | Fortunate | Unisex | English |
| Lucy | Light | Female | Latin |
| Luna | Moon | Female | Latin |
| Lyn | "A Cascade."Variants Include Lynn, Linn, Lynna, And Lynne. | Female | English |
| Maddie | Pet form of Mad- names | Unisex | English |
| Madison | Son of Maud | Unisex | English |
| Madonna | My lady | Female | Italian |
| Mae | The fifth month of the year | Female | English |
| Maggie | Pearl | Female | Greek |
| Mandy | She who must be loved | Female | Latin |
| Marcia | From the god Mars | Female | Latin |
| Marilyn | Uncertain, maybe bitter | Female | Hebrew |
| Marisa | Variant Of Maria. | Female | Hebrew |
| Marley | Pleasant wood | Female | English |
| Marshmellow | | Unisex | Hebrew |
| Maya | Uncertain, perhaps mother or great one | Female | Greek |
| Melba | Short form of Melbourne | Female | English |
| Mia | Uncertain, maybe bitter | Female | Hebrew |
| Mickey | Who is like God? | Unisex | Hebrew |
| Millie | Labour | Female | Germanic |
| Minnie | Will, desire + helmet, protection | Female | Germanic |
| Miracle | Wonder | Unisex | English |
| Missy | Bee | Female | Greek |
| Misty | Misty | Female | English |
| Mocha | Coffee of high quality. | Unisex | English |
| Mojo | Good luck charm. | Unisex | English |
| Molly | Uncertain, maybe bitter | Female | Hebrew |
| Monster | A creature of frightening appearance | Unisex | English |
| Moose | Largest member of the deer family. Moose have heavy brown bodies with humped shoulders and broad antlers. | Unisex | English |
| Morgan | Uncertain, perhaps bright sea | Female | Welsh |