| Name | Meaning | Gender | Origin |
|---|
| Mister | | Male | |
| Mitzi | bitter | Female | |
| Modeste | Modest
| Female | |
| Mojo | Good luck charm. | Unisex | |
| Monty | From Montgomer - The mountain hunter. | Male | English |
| Moon | Moon | Female | American |
| Moppet | A young child. | Unisex | |
| Morgana | sea-circle | Female | Female |
| Mork And Mindy | | Unisex | Hebrew |
| Mouse | A small rodent with a long tail and small rounded ears. | Unisex | |
| Moxie | Ability to face difficulty with courage. | Female | English |
| Mr Cookie | | Female | |
| Muffin | A small cup shaped cake | Unisex | |
| Muirgheal | Knows the sea
| Female | |
| Munchkin | A very small elflike person. | Unisex | |
| Napoleon | Hound Dog from the AristoCats
| Male | Greek |
| Neela | sapphire blue | Female | Hindi |
| Neferkitty | | Unisex | Hebrew |
| Neutron | | Unisex | Hebrew |
| Newton | new town | Male | English |
| Nicole | Victory of the people
| Female | |
| Niko | victory of the people | Male | Greek |
| Nipper | A small boy | Unisex | |
| Nitro | Short for Nitroglycerin a highly explosive liquid. | Male | |
| Nizana | Blossom
| Female | Hebrew |