| Name | Meaning | Gender | Origin |
|---|
| Matilda | battle-mighty | Female | |
| Maxine | greatest | Female | Latin |
| Maya | Abbreviation of Amalia: variant of Maia.
| Female | Hebrew |
| Megan | mighty, strong able, pearl | Female | English |
| Melanie | Dark.
| Female | Greek |
| Melissa | bee, honey | Female | Greek |
| Mercy | compassion, pity | Female | English |
| Micheal | Who Is Like God | Unisex | Irish |
| Michelle | Feminine of Michael | Female | |
| Miley | A Soldier, Merciful | Female | Latin |
| Millicent | after the character in D.C. Simpson's online comic Ozy and Millie | Female | |
| Millie | English, gentle strength | Female | English |
| Mirabelle | marvelousl | Female | |
| Miranda | Admirable
| Female | Latin |
| Molly | Bitter
| Female | English |
| Moon | Moon | Female | American |
| Moose | Largest member of the deer family. Moose have heavy brown bodies with humped shoulders and broad antlers. | Unisex | |
| Morgan | circle; sea | Female | Welsh |
| Morgana | sea-circle | Female | Female |
| Morticia | Addams family | Female | |
| Muffin | A small cup shaped cake | Unisex | |
| Munchkin | A very small elflike person. | Unisex | |
| Nadia | hope | Female | Russian |
| Nanette | English variation of Hebrew Hannah, grace | Female | English |
| Naomi | pleasent one; above all, beauty | Female | Hebrew |