| MatevŽ | | - | Slovene | |
| Matic | | - | Slovene | |
| Matija | | MAH-tee-yah (Croatian, Serbian) | Slovene, Croatian, Serbian | |
| MatjaŽ | | - | Slovene | |
| Melanija | | - | Serbian, Macedonian, Slovene, Latvian, Lithuanian | |
| Metod | | - | Slovene, Slovak | |
| Miha | | - | Slovene | |
| Mihael | | - | Slovene, Croatian | |
| Mihaela | | mee-hah-YE-lah (Romanian), mee-HAH-el-ah (Croatian) | Romanian, Slovene, Croatian, Macedonian | |
| MiklavŽ | | - | Slovene | |
| Milan | | MEE-lahn (Czech) | Czech, Slovak, Russian, Serbian, Croatian, Slovene, Bulgarian, Macedonian, Dutch | |
| Milena | | mee-LE-nah (Italian) | Bulgarian, Czech, Serbian, Croatian, Slovene, Macedonian, Polish, Russian, Italian | |
| Milica | | MEE-lee-tsah (Serbian, Croatian) | Serbian, Croatian, Slovene, Macedonian | |
| Milivoj | | MEE-lee-voi (Croatian, Serbian) | Croatian, Serbian, Slovene, Medieval Slavic | |
| Milka (1) | | - | Serbian, Croatian, Slovene, Macedonian, Bulgarian | |