| Keelyn | Lively: aggressive. Variant of Kelly.
| Female | |
| Kingsley Shackelbolt | | Unisex | |
| Lainie | Serves John
| Female | English |
| Lavern | Woodland.
| Female | |
| Lenny And Squiggy | | Unisex | Hebrew |
| Li Li | | Female | |
| Lotti | | Female | |
| Lucena | Illumination. Mythological Roman goddess of childbirth and giver of first light to newborns. Also refers to Mary as Lady of the Light.
| Female | |
| Lucius Malfoy | | Unisex | |
| Lucy | light: illumination.
| Female | English |
| Luella | Famous elf
| Female | Spelling |
| Macala | A diffrent way of spelling makayla
| Female | |
| Machara | Plain
| Female | |
| Madame Adelaide Bonfamille | From the AristoCats
| Female | |
| Madelene | From the tower
| Female | |
| Mairead | Name of a saint
| Female | Irish |
| Maizy | Pearl | Unisex | Scottish |
| Mallory | army counseler, without good fortune | Female | |
| Mamie | Mother | Female | English |
| Mandarin | A high official of Imperial China. Also a small orange or tangerine like fruit. | Female | |
| Mango | after the character in Saturday Night Live | Unisex | |
| Maple | Deciduous tree known for it's autumn colour. | Female | Tree |
| Marigold | a flower | Female | |
| Marmalade | | Unisex | |
| Marty | Of Mars The God Of War, Warlike | Unisex | English |