| Marduk | | MAHR-dook (English) | Near Eastern Mythology | |
| Mari (2) | | - | Mythology | |
| Mars | | MAHRZ (English) | Roman Mythology | |
| Marzanna (2) | | - | Slavic Mythology | |
| Math | | - | Welsh Mythology | |
| Maui | | - | Hawaiian, Polynesian Mythology | |
| Meadhbh | | MAYV | Irish, Irish Mythology | |
| Medb | | - | Irish Mythology | |
| Medea | | mə-DEE-ə (English) | Greek Mythology (Latinized), Georgian | |
| Medeia | | - | Greek Mythology | |
| Medousa | | - | Greek Mythology | |
| Medraut | | - | Welsh Mythology, Arthurian Romance | |
| Medrod | | - | Welsh Mythology, Arthurian Romance | |
| Medusa | | mə-DOO-sə (English) | Greek Mythology (Latinized) | |
| Megaera | | - | Greek Mythology (Latinized) | |