| Morrison | Unisex | English Names |
| Morrow | Unisex | English Names |
| Morse | Man | English Names |
| Mort | Man | English Names |
| Mortimer | Man | English Names |
| Morwenna | Woman | English Names |
| Mosaic | Unisex | English Names |
| Mosley | Unisex | English Names |
| Moss | Man | English Names |
| Mowgli | Man | English Names |
| Mullins | Unisex | English Names |
| Murgatroyd | Woman | English Names |
| Murray | Unisex | English Names |
| Music | Unisex | English Names |
| Mycroft | Man | English Names |
| Myla | Woman | English Names |
| Myna | Woman | English Names |
| Myrtle | Woman | English Names |
| Mystery | Woman | English Names |
| Mystique | Woman | English Names |