| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 641 | Markell | German | Of Mars; the god of war. | M | |
| 642 | Markos | German | Of Mars. The Roman fertility god Mars for whom March was named. | M | |
| 643 | Markus | German | Of Mars. The Roman fertility god Mars for whom March was named. | M | |
| 644 | Martel | German | Warrior of Mars. | M | |
| 645 | Martell | German | Warrior of Mars. | M | |
| 646 | Marx | German | Of Mars; the god of war. | M | |
| 647 | Maximilian | German | The greatest. | M | |
| 648 | Maximillian | German | The greatest. | M | |
| 649 | Mayer | German | Headman; mayor. Surname. | M | |
| 650 | Maynard | German | Compound of the Old German words for 'hardy' and 'strength'. Firm. | M | |
| 651 | Mayne | German | Powerful. | M | |
| 652 | Maynor | German | Powerful. | M | |
| 653 | Meinhard | German | Firm. | M | |
| 654 | Meinke | German | Firm. | M | |
| 655 | Meino | German | Firm. | M | |
| 656 | Meinrad | German | Strong advisor. | M | |
| 657 | Meinyard | German | Firm. | M | |
| 658 | Milo | German | Merciful. | M | |
| 659 | Nardo | German | Strong; hardy. Abbreviation of Bernardo and Leonardo. | M | |
| 660 | Nef | German | Nephew. | M | |