| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 581 | Magnor | Norse | Fighter. | M | |
| 582 | Magnus | Norse | Fighter. | M | |
| 583 | Mani | Norse | Father of Ketil. | M | |
| 584 | Mar | Norse | Son of Naddodd. | M | |
| 585 | Maria | Norse | Name not originally Norse but it appears in several sagas and is the name of King Harald Sigurdsson's daughter. | F | |
| 586 | Marianne | Norse | Bitter grace. | F | |
| 587 | Meklorka | Norse | A deaf and mute concubine. | F | |
| 588 | Menglad | Norse | Won by Svipdag. | F | |
| 589 | Mikkel | Norse | Norse form of Michael. | M | |
| 590 | Mildri | Norse | Mild and lovely. | F | |
| 591 | Miolnir | Norse | Thor's hammer. | M | |
| 592 | Mista | Norse | A Valkyrie. | F | |
| 593 | Mjolnir | Norse | Thor's hammer. | M | |
| 594 | Modi | Norse | Son of Thor. | M | |
| 595 | Munin | Norse | Memory. | M | |
| 596 | Nagelfar | Norse | The ship that will carry the dead to Ragnarok. | M | |
| 597 | Nanna | Norse | Wife of Balder. | F | |
| 598 | Nerthus | Norse | Mother of earth. | F | |
| 599 | Nidhogg | Norse | A mythical dragon. | M | |
| 600 | Nidhug | Norse | A mythical dragon. | M | |