| Marvela | Woman | Spanish Names |
| Masiela | Woman | Spanish Names |
| Mata | Unisex | Spanish Names |
| Mateo | Man | Spanish Names |
| Matia | Woman | Spanish Names |
| Matias | Unisex | Spanish Names |
| Matusha | Woman | Spanish Names |
| Matuxa | Woman | Spanish Names |
| Mauricio | Man | Spanish Names |
| Maximo | Man | Spanish Names |
| Mayra | Woman | Spanish Names |
| Mayte | Woman | Spanish Names |
| Medardo | Man | Spanish Names |
| Medrano | Unisex | Spanish Names |
| Mejia | Unisex | Spanish Names |
| Melanio | Man | Spanish Names |
| Melba | Woman | Spanish Names |
| Melchor | Man | Spanish Names |
| Melosa | Woman | Spanish Names |
| Mema | Woman | Spanish Names |