| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Miron (1) | MEE-rawn (Polish) | Romanian, Russian, Ukrainian, Polish | ||
| Miruna | - | Romanian | ||
| Mitica | - | Romanian | ||
| Modesta | mo-DHE-stah (Spanish) | Spanish, Late Roman | ||
| Modestus | - | Late Roman | ||
| Modred | - | Welsh Mythology, Arthurian Romance | ||
| Monica | MAHN-i-kə (English) | English, Italian, Portuguese, Romanian, Late Roman | ||
| Mordred | - | Welsh Mythology, Arthurian Romance | ||
| Morgaine | - | Arthurian Romance | ||
| Morgan (2) | - | Arthurian Romance | ||
| Morgen | - | Arthurian Romance |