| Name | Meaning | Gender | Origin |
|---|
| Luther | Renowned warrior.
| Male | |
| Lyra | lyre | Female | Greek |
| Lyric | lyre | Female | Greek |
| Lyrical | | Unisex | |
| M.C. | Mother Cat | Unisex | |
| Mac | Son of
| Male | Scottish |
| Macbeth | Son of Beth
| Male | |
| Macy | from Matthew's land; club | Female | English |
| Madonna | my lady | Female | Latin |
| Mae | bitter | Female | English |
| Maestoso | musical term meaning with majesty | Unisex | |
| Maestro | | Male | |
| Maggie Mae | | Unisex | |
| Magnificat | Variation on magnificent - Splendid in appearance. | Male | |
| Mahalia | affection | Female | Hebrew |
| Major | Army or Air Force rank above Captain but below Lieutenant Colonel | Male | Latin |
| Mambo | A Latin dance resembling the rumba. | Unisex | |
| Mandolin | | Female | Hebrew |
| Mandy | Harmony | Female | English |
| Maria | bitter | Female | Latin |
| Mariah | the Lord is my teacher | Female | Latin |
| Mario | bitter, king-ruler | Male | Italian |
| Marley | From the lake in the meadow | Female | English |
| Marley | From the lake in the meadow | Female | English |
| Mars | God Of War | Male | Latin |