| Name | Meaning | Gender | Origin |
|---|
| Lucille | light | Female | |
| Lucy | light: illumination.
| Female | English |
| Ludwig | Famous fighter
| Male | |
| Luke | Light | Male | Greek |
| Lullaby | | Unisex | |
| Luther | Renowned warrior.
| Male | |
| Lyric | lyre | Female | Greek |
| Lyrical | | Unisex | |
| Mac | Son of
| Male | Scottish |
| Macy | from Matthew's land; club | Female | English |
| 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 | |
| Mandy | Harmony | Female | English |
| Maria | bitter | Female | Latin |
| Mariah | the Lord is my teacher | Female | Latin |
| Marley | From the lake in the meadow | Female | English |
| Marley | From the lake in the meadow | Female | English |
| Marta | Lady Of The House | Female | Italian |
| Martin | Warlike person. | Male | Latin |
| Marvin | beautiful sea; good friend | Male | Welsh |
| Mason | Worker in stone. | Male | English |