| Monissa | Woman | American Names |
| Mony | Woman | American Names |
| Moon-unit | Unisex | American Names |
| Moral | Unisex | American Names |
| Morning | Woman | American Names |
| Morrie | Man | American Names |
| Morrisa | Woman | American Names |
| Moxie | Unisex | American Names |
| Mya | Woman | American Names |
| Myeisha | Woman | American Names |
| Myesha | Woman | American Names |
| Mykelti | Man | American Names |
| Mylan | Unisex | American Names |
| Myrilla | Woman | American Names |