| Magdalena | | mahg-dah-LE-nah (Polish), mahk-dah-LE-nah (German), MAHG-dah-le-nah (Finnish), mag-da-LAY-na (English) | Polish, German, Dutch, Swedish, Norwegian, Danish, Spanish, Occitan, Slovene, Czech, Bulgarian, Mace | |
| Maja (2) | | MIE-ah (German, Polish) | Croatian, Serbian, Macedonian, Slovene, German, Danish, Swedish, Norwegian, Polish, Czech, Slovak | |
| Maksim | | mahk-SEEM (Russian) | Russian, Belarusian, Macedonian, Ukrainian | |
| Mare | | MAH-re (Croatian) | Estonian, Slovene, Macedonian, Croatian | |
| Marija | | - | Croatian, Slovene, Serbian, Macedonian, Lithuanian, Latvian | |
| Marijana | | - | Croatian, Serbian, Slovene, Macedonian | |
| Marin | | - | French, Romanian, Croatian, Serbian, Bulgarian, Macedonian | |
| Marjan (2) | | - | Slovene, Macedonian, Serbian, Croatian | |
| Marko | | MAHR-ko (Finnish) | Ukrainian, Croatian, Serbian, Slovene, Bulgarian, Macedonian, Finnish, Basque | |
| Matej | | - | Slovak, Slovene, Croatian, Macedonian | |
| Melanija | | - | Serbian, Macedonian, Slovene, Latvian, Lithuanian | |
| Metodij | | - | Macedonian | |
| Metodija | | - | Macedonian | |
| Mihaela | | mee-hah-YE-lah (Romanian), mee-HAH-el-ah (Croatian) | Romanian, Slovene, Croatian, Macedonian | |
| Mihail | | - | Romanian, Bulgarian, Macedonian, Greek | |