| Name | Meaning | Gender | Origin |
|---|
| May | bitter | Female | English |
| Mel | Scottish, settlement on infertile land | Male | English |
| Melanie | Dark.
| Female | Greek |
| Merle | Bright Sea | Male | English |
| Merlot | | Male | |
| Merlyn | Sea Fortress | Unisex | English |
| Meryl | Bright Sea | Female | English |
| Midnight | Intense darkness, the middle of the night | Male | English |
| Midori | green | Female | Japanese |
| Milk | | Unisex | Hebrew |
| Milky | | Female | |
| Mina | Precious Stone | Female | Hindi |
| Mink | | Unisex | |
| Minor | | Unisex | Hebrew |
| Mira | admirable | Female | Latin |
| Misty | misty.
| Female | English |
| Misty | misty.
| Female | English |
| Mocha | Coffee of high quality. | Female | Arabic |
| Modena | | Unisex | Hebrew |
| Molasses | A thick dark brown sugary syrup | Unisex | |
| Morgan | circle; sea | Female | Welsh |
| Moselle | taken from water | Female | Hebrew |
| Mouse | A small rodent with a long tail and small rounded ears. | Unisex | |
| Mudd | | Unisex | Hebrew |
| Mushroom | A fleshy vegetable with an umbrella shaped cap atop a stalk. | Unisex | |