| Name | Meaning | Gender | Origin |
|---|
| Lorna | of Lorne | Female | English |
| Louisiana | | Female | Hebrew |
| Lourdes | Reference to the Virgin Mary
| Female | Basque |
| Luke | Light | Male | Greek |
| Lydia | woman from Persia, beauty | Female | Greek |
| Macy | from Matthew's land; club | Female | English |
| Madeira | A Portuguese desert wine. | Female | Place-name |
| Madeline | woman from Magdala, one who is elevated, a high tower | Female | English |
| Madison | son of a mighty warrior; son of Maud | Female | English |
| Madrid | | Female | |
| Mali | sweet | Female | Thai |
| Mallory | army counseler, without good fortune | Female | |
| Mansfield | From The Field By The Small River | Unisex | English |
| Marley | From the lake in the meadow | Female | English |
| Marley | From the lake in the meadow | Female | English |
| Marsala | | Unisex | |
| Mason | Worker in stone. | Male | English |
| Maxwell | Capable
| Male | Scottish |
| Mayo | yew-tree plain | Male | Irish |
| Melbourne | From the mill stream
| Male | |
| Memphis | City Of Moph | Male | Hebrew |
| Merlin | Character on Chocolate Frog card.
| Male | Welsh |
| Messina | Middle Child | Unisex | Latin |
| Michel | Who Is Like God | Male | French |
| Minster | | Unisex | Hebrew |