| Name | Meaning | Gender | Origin |
|---|
| Millie | English, gentle strength | Female | English |
| Milly | Highborn Power | Unisex | English |
| Milly | Highborn Power | Unisex | English |
| Milo | Merciful.
| Male | Latinized |
| Milo | Merciful.
| Male | Latinized |
| Minnie | Form of Williamina
| Female | English |
| Mischief | One that causes minor trouble or disturbances | Male | |
| Mishka | Russian for little bear | Unisex | |
| Missy | Informal term for young woman | Female | English |
| Misty | misty.
| Female | English |
| Misty | misty.
| Female | English |
| Mittens | | Unisex | |
| Mocha | Coffee of high quality. | Female | Arabic |
| Molly | Bitter
| Female | English |
| Monty | From Montgomer - The mountain hunter. | Male | English |
| Muffin | A small cup shaped cake | Unisex | |
| Muffy | | Unisex | |
| Neville | from the new farmland | Male | |
| Nicki | people of victory | Female | English |
| Nicky | Abbreviation of Nicholas. Mythological Nike was Greek goddess of victory and root origin of Nicholas.
| Female | |
| Niki | French feminine variation of Nicholas, Greek, people of victory | Female | Greek |
| Nikki | Victorious People | Unisex | English |
| Niko | victory of the people | Male | Greek |
| Nipper | A small boy | Unisex | |
| Norman | man from the north | Male | English |