| Name | Gender | Meaning | Favorites |
| Mangala | Girl | Auspicious, Bliss, Goddess Parvati | |
| Mani | Boy | A jewel | |
| Manikkam | Boy | Gem | |
| Manikkavel | Boy | God Murugan | |
| Manimaran | Boy | Brave | |
| Manimegalai | Girl | A character of ancient tamil epic | |
| Manivannan | Boy | Related name of Lord Ayyappa | |
| Meena | Girl | Precious blue stone, With Beautiful Eyes resembling a Fish | |
| Mekala | Girl | Excellent Art | |
| Mukilan | Boy | Of the clouds | |
| Mukul | Boy | Bud | |
| Murugan | Boy | Tamil God | |
| Murugavel | Boy | God Murugan | |
| Muthu | Boy | Pearl | |
| Muthukumaran | Boy | God Murugan | |
| Muthuraman | Boy | God Raman | |
| Muthuvel | Boy | God Murugan | |
| Mythili | Girl | Princess of mithila, Sita | |
| Nagesh | Boy | Cosmic Serpent, Seshnag | |
| Nalan | Boy | Name of an Honest King | |
