| Mathias | | mah-TEE-ahs (German) | French, German, Swedish, Norwegian, Danish | |
| Mathilda | | mə-TIL-də (English, Swedish) | English, Swedish, Ancient Germanic | |
| Mathilde | | ma-TEELD (French), mah:-TIL-də (Dutch) | French, German, Dutch, Norwegian, Danish | |
| Mathis | | MAH-tis (German) | German, French | |
| MatthÄUs | | - | German | |
| Matthias | | mah-TEE-ahs (German), mə-THIE-əs (English) | Greek, German, Swedish, Norwegian, Danish, French, Dutch, Biblical, Biblical Latin, Biblical Greek | |
| Mattias | | mah-TEE-ahs (German) | German, Swedish | |
| Max | | MAHKS (German), MAKS (English) | German, English, Swedish, Norwegian, Danish, Dutch | |
| Maximilian | | mahk-see-MEE-lee-ahn (German), mak-si-MIL-ee-ən (English), mak-si-MIL-yən (English) | German, English, Swedish, Norwegian, Danish | |
| Maximiliane | | - | German | |
| Mechthild | | MEKHT-hilt | German | |
| Mechtilde | | mekht-IL-də | German | |
| Meginfrid | | - | Ancient Germanic | |
| Meginhard | | - | Ancient Germanic | |
| Meginrat | | - | Ancient Germanic | |