| Mailys | | - | French | |
| Manon | | ma-NAWN (French) | French, Dutch | |
| Manu (2) | | MAH-noo (Finnish) | French, Spanish, German, Finnish | |
| Manuel | | mah-NWEL (Spanish), man-oo-EL (Portuguese), MAHN-oo-el (German) | Spanish, Portuguese, German, English, Italian, French, Romanian, Late Greek (Latinized) | |
| Marc | | MAHRHK (French) | French, Catalan, Welsh | |
| Marcel | | mar-SEL (French), MAHR-tsel (Polish), MAHR-sel (Dutch, German) | French, Catalan, Romanian, Polish, Czech, Slovak, Dutch, German | |
| Marceline | | - | French | |
| Marcelle | | - | French | |
| Marcellette | | - | French | |
| Marcellin | | - | French | |
| Marcelline | | - | French | |
| Margaux | | mar-GO | French | |
| Margot | | mar-GO | French | |
| Marguerite | | mar-gə-REET, mar-GREET | French | |
| Marianne | | mah-ree-AH-nə (German), MAH-ree-ahn-ne (Finnish) | French, English, German, Dutch, Swedish, Norwegian, Danish, Finnish | |