| Maryvonne | | - | French | |
| MatÉO | | - | French | |
| MathÉO | | - | French | |
| Mathias | | mah-TEE-ahs (German) | French, German, Swedish, Norwegian, Danish | |
| Mathieu | | - | French | |
| Mathilde | | ma-TEELD (French), mah:-TIL-də (Dutch) | French, German, Dutch, Norwegian, Danish | |
| Mathis | | MAH-tis (German) | German, French | |
| Mathys | | - | French | |
| Matthias | | mah-TEE-ahs (German), mə-THIE-əs (English) | Greek, German, Swedish, Norwegian, Danish, French, Dutch, Biblical, Biblical Latin, Biblical Greek | |
| Matthieu | | ma-TYU | French | |
| Maurice | | MAWR-is (English), mə-REES (English), mo-REES (French) | English, French | |
| Maxence | | - | French | |
| Maxime | | - | French | |
| Maximilien | | - | French | |
| Maximilienne | | - | French | |