| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Medraut | - | Welsh Mythology, Arthurian Romance | ||
| Medrod | - | Welsh Mythology, Arthurian Romance | ||
| Merlin | MUR-lin (English) | Arthurian Romance, English | ||
| Modred | - | Welsh Mythology, Arthurian Romance | ||
| Mordred | - | Welsh Mythology, Arthurian Romance | ||
| Morgaine | - | Arthurian Romance | ||
| Morgan (2) | - | Arthurian Romance | ||
| Morgen | - | Arthurian Romance |