| Name | Meaning | Gender | Origin |
|---|
| Midget | A small or miniature version | Unisex | |
| Miette | Small Sweet Thing | Unisex | French |
| Miki | beautiful tree | Female | Japanese |
| Mimi | Form of Williamina
| Female | English |
| Mimi | Form of Williamina
| Female | English |
| Mini | Something smaller than others of its type | Unisex | |
| Mini | Something smaller than others of its type | Unisex | |
| Minnie | Form of Williamina
| Female | English |
| Minnow | | Unisex | |
| Minuet | | Female | Hebrew |
| Missy | Informal term for young woman | Female | English |
| Misty | misty.
| Female | English |
| Misty | misty.
| Female | English |
| Mona | Gathered of the seed of a jimson weed
| Female | Irish |
| Morsel | | Unisex | Hebrew |
| Moxie | Ability to face difficulty with courage. | Female | English |
| Mr Jingles | | Unisex | |
| Muffin | A small cup shaped cake | Unisex | |
| Mugsy | | Unisex | Hebrew |
| Munchkin | A very small elflike person. | Unisex | |
| Nadia | hope | Female | Russian |
| Nibbles | | Unisex | |
| Nikki | Victorious People | Unisex | English |
| Nina | Girl
| Female | Russian |
| Nipper | A small boy | Unisex | |