| Maddalena | | mahd-dah-LE-nah | Italian | |
| Mafalda | | mah-FAHL-dah (Italian), mə-FAL-də (Portuguese) | Italian, Portuguese | |
| Manfredo | | - | Italian | |
| Manlio | | - | Italian | |
| Manuel | | mah-NWEL (Spanish), man-oo-EL (Portuguese), MAHN-oo-el (German) | Spanish, Portuguese, German, English, Italian, French, Romanian, Late Greek (Latinized) | |
| Manuela | | mah-noo-E-lah (German), mah-NWE-lah (Italian) | Spanish, Portuguese, Romanian, German, Italian | |
| Manuele | | mah-NWE-le | Italian | |
| Marcella | | - | Italian, German, Ancient Roman | |
| Marcellino | | mahr-chel-LEE-no | Italian | |
| Marcello | | mahr-CHEL-lo | Italian | |
| Marciano | | - | Portuguese, Spanish, Italian | |
| Marco | | MAHR-ko (Italian, Spanish, Dutch) | Italian, Spanish, Portuguese, German, Dutch | |
| Margherita | | - | Italian | |
| Maria | | mah-REE-ah (Italian, German, Swedish, Norwegian, Danish, Dutch), mə-REE-ə (Catalan, English), MAHR-yah (Polish), MAH-ree-ah (Finnish) | Italian, Portuguese, Catalan, Occitan, German, Swedish, Norwegian, Danish, Faroese, Dutch, Frisian, | |
| Mariangela | | - | Italian | |