| Name | Meaning | Gender | Origin |
|---|
| Matra | | Unisex | Hebrew |
| Maurice | moorish; dark; moor land | Male | Latin |
| Max | Large spring | Male | English |
| Max | Large spring | Male | English |
| Maxwell | Capable
| Male | Scottish |
| Mel | Scottish, settlement on infertile land | Male | English |
| Meowth | | Unisex | |
| Merlin | Character on Chocolate Frog card.
| Male | Welsh |
| Merrick | ruler of the sea | Male | Anglo-Welsh |
| Mesha | ram, born under the sign of Aries | Unisex | |
| Miaow | | Unisex | |
| Michael | who is like God | Male | Hebrew |
| Micheal | Who Is Like God | Unisex | Irish |
| Midnight | Intense darkness, the middle of the night | Male | English |
| Miko | | Unisex | |
| Miles | of smiles | Male | Latin |
| Milly | Highborn Power | Unisex | English |
| Milly | Highborn Power | Unisex | English |
| Mimsy | | Unisex | |
| Minimog | | Unisex | Hebrew |
| Minty | Collector Of Thoughts, Determined Protector | Unisex | French |
| Mistress | | Unisex | Hebrew |
| Mittens | | Unisex | |
| Mitzie | | Unisex | |
| Miya | Temple | Unisex | Japanese |