| Name | Meaning | Gender | Origin |
|---|
| Lucille | light | Female | |
| Lucinda | light | Female | English |
| Lucy | light: illumination.
| Female | English |
| Luke | Light | Male | Greek |
| MacKenzie | Child of the wise leader
| Female | Scottish |
| Maddie | Of Magdala | Female | English |
| Madison | son of a mighty warrior; son of Maud | Female | English |
| Maggie | Abbreviation of Margaret. A pearl.
| Female | English |
| Magic | Possessing qualities that produce baffling effects | Male | Word |
| Magic | Possessing qualities that produce baffling effects | Male | Word |
| Magnolia | Flower
| Female | Latin |
| Maisy | | Unisex | |
| Maizey | | Unisex | |
| Maizy | Pearl | Unisex | Scottish |
| Mango | after the character in Saturday Night Live | Unisex | |
| Maple | Deciduous tree known for it's autumn colour. | Female | Tree |
| Margaret | after Margaret Thatcher | Female | Greek |
| Margarine | Pearl | Unisex | English |
| Margie | Pearl | Female | English |
| Marigold | a flower | Female | |
| Marilyn | bitter | Female | English |
| Marley | From the lake in the meadow | Female | English |
| Marley | From the lake in the meadow | Female | English |
| Marmalade | | Unisex | |
| Marshmallow | A soft spongy sweet confectionery. Also a timid person. | Unisex | |