| Luned | | LIN-ed (Welsh) | Welsh, Welsh Mythology, Arthurian Romance | |
| Lunete | | - | Welsh Mythology, Arthurian Romance | |
| Lycurgus | | - | Greek Mythology (Latinized), Ancient Greek (Latinized) | |
| Lycus | | - | Greek Mythology (Latinized), Ancient Greek (Latinized) | |
| Lykos | | - | Greek Mythology, Ancient Greek | |
| Lykourgos | | - | Greek Mythology, Ancient Greek | |
| MÉAbh | | MAYV | Irish, Irish Mythology | |
| MÓR RÍOghain | | - | Irish Mythology | |
| MÓRrÍGhan | | - | Irish Mythology | |
| Mabon | | - | Welsh, Welsh Mythology | |
| Maeve | | MAYV | Irish, Irish Mythology | |
| Magni | | - | Ancient Scandinavian, Norse Mythology | |
| Maia (1) | | MAY-ə (English), MIE-ə (English) | Greek Mythology, Roman Mythology, Portuguese, Georgian | |
| Maia (2) | | MAY-ə (English), MIE-ə (English) | Roman Mythology | |
| Marama | | - | Polynesian Mythology | |