| Name | Meaning | Gender | Origin |
|---|
| Margarita | Cocktail made with tequila and lemon or lime juice. | Female | Spanish |
| Mariah | the Lord is my teacher | Female | Latin |
| Marzipan | from the Flash cartoon Homestar Runner | Unisex | |
| Mau | | Unisex | |
| Mavise | Joy
| Female | |
| Maya | Abbreviation of Amalia: variant of Maia.
| Female | Hebrew |
| Meadow | Meadow | Female | English |
| Mercedes | Compassionate, merciful. | Female | Spanish |
| Michiko | She was the first commoner to become Emperess of Japan.
| Female | Japanese |
| Milky | | Female | |
| Millie | English, gentle strength | Female | English |
| Miranda Goshawk | Author of The Standard book of Spells, Grade 2.
| Female | |
| Misja | I think that it means little bear, Little fighter or something like that
| Female | |
| Modesta | Modest
| Female | |
| Molly | Bitter
| Female | English |
| Mona Lisa | | Unisex | |
| Monroe | mouth of the Roe River; wheelwright | Female | Scottish |
| Monroe | mouth of the Roe River; wheelwright | Female | Scottish |
| Moon | Moon | Female | American |
| Morgan | circle; sea | Female | Welsh |
| Motley | | Unisex | |
| Muirgheal | Knows the sea
| Female | |
| Mycroft | named for Sherlock Holmes smarter brother | Unisex | |
| Mysti | Misty. | Unisex | English |
| Nana | A grandmother. | Female | English |