| Name | Meaning | Gender | Origin |
|---|
| Lightning | | Unisex | Hebrew |
| Lilith | character in Cheers | Female | Assyrian |
| Lobo | Wolf | Unisex | Italian |
| Loco | | Unisex | |
| Lolo | free man | Female | English |
| London | fierce ruler of the world | Female | English |
| Lorelei | from the Rhine River | Female | |
| Lorna | of Lorne | Female | English |
| Lourdes | Reference to the Virgin Mary
| Female | Basque |
| Love | loved one | Female | Word |
| Lovely | | Unisex | Hebrew |
| Macy | from Matthew's land; club | Female | English |
| Madeira | A Portuguese desert wine. | Female | Place-name |
| Madison | son of a mighty warrior; son of Maud | Female | English |
| Mali | sweet | Female | Thai |
| Mallory | army counseler, without good fortune | Female | |
| Melba | slender, soft; mallow flower | Female | Modern |
| Messina | Middle Child | Unisex | Latin |
| Miracle | wonder, marvel | Female | Latin |
| Money | | Unisex | |
| Moon | Moon | Female | American |
| Morning Star | | Unisex | Hebrew |
| Munster | | Unisex | Hebrew |
| Muse | | Female | |
| Mystic | | Unisex | Hebrew |