| Matteo | | maht-TE-o | Italian | |
| Mattia | | maht-TEE-ah | Italian | |
| Maura (1) | | MOW-rah (Italian, Spanish) | Italian, Spanish, Late Roman | |
| Maurizio | | mow-REE-tsyo | Italian | |
| Mauro | | MOW-ro (Italian) | Italian, Portuguese (Brazilian) | |
| Melania | | me-LAHN-yah (Polish) | Italian, Spanish, Polish, Late Roman | |
| Melchiorre | | mel-KYOR-re | Italian | |
| Micaela | | - | Italian, Spanish, Portuguese | |
| Michela | | mee-KE-lah | Italian | |
| Michelangela | | - | Italian | |
| Michelangelo | | mee-KE-lahn-je-lo | Italian | |
| Michele (1) | | mee-KE-le | Italian | |
| Michelina | | mee-ke-LEE-nah | Italian | |
| Milena | | mee-LE-nah (Italian) | Bulgarian, Czech, Serbian, Croatian, Slovene, Macedonian, Polish, Russian, Italian | |
| Mimi | | - | English, Italian | |