| Name | Meaning | Gender | Origin |
|---|
| Lisbon | | Unisex | Hebrew |
| Lola | strong woman | Female | Spanish |
| Lolly | | Unisex | |
| Lotus | freamlike, lotus flower | Female | Greek |
| Lover | | Unisex | |
| Lucy | light: illumination.
| Female | English |
| Luke Skywalker | | Unisex | Hebrew |
| Lunatic | | Unisex | Hebrew |
| Mac | Son of
| Male | Scottish |
| Macey | Gift Of G-D | Unisex | French |
| Macho | | Unisex | Hebrew |
| Maggie | Abbreviation of Margaret. A pearl.
| Female | English |
| Magnolia | Flower
| Female | Latin |
| Magnum | A large type of wine bottle. | Unisex | |
| Major | Army or Air Force rank above Captain but below Lieutenant Colonel | Male | Latin |
| Maple | Deciduous tree known for it's autumn colour. | Female | Tree |
| Marble | | Unisex | |
| Mariachi | | Unisex | Hebrew |
| Marilyn | bitter | Female | English |
| Marmalade | | Unisex | |
| Marshmallow | A soft spongy sweet confectionery. Also a timid person. | Unisex | |
| Martini | A cocktail made of gin or vodka and dry vermouth | Unisex | |
| Matilda | battle-mighty | Female | |
| Meadow | Meadow | Female | English |
| Medusa | Guardian | Unisex | Latin |