| MaximiliÁN | | - | Slovak | |
| MelÁNia | | - | Hungarian, Slovak | |
| Metod | | - | Slovene, Slovak | |
| Michaela | | mi-khah-E-lah (German), mi-KAY-lə (English) | German, Swedish, English, Czech, Slovak | |
| Michal (1) | | - | Czech, Slovak | |
| MikulÁŠ | | - | Slovak, Czech | |
| Milan | | MEE-lahn (Czech) | Czech, Slovak, Russian, Serbian, Croatian, Slovene, Bulgarian, Macedonian, Dutch | |
| MiloŠ | | - | Czech, Slovak, Serbian, Slovene, Croatian, Macedonian | |
| Miloslav | | - | Czech, Slovak, Medieval Slavic | |
| Mirek | | MEE-rek (Polish) | Czech, Slovak, Polish | |
| Miroslav | | mee-rah-SLAHF (Russian) | Czech, Slovak, Russian, Serbian, Croatian, Slovene, Bulgarian, Macedonian, Medieval Slavic | |
| Miroslava | | mee-rah-SLAH-vah (Russian) | Czech, Slovak, Russian, Croatian, Serbian, Macedonian, Slovene, Medieval Slavic | |
| Monika | | MO-ni-kah (German), maw-NEE-kah (Polish) | German, Swedish, Norwegian, Danish, Czech, Slovak, Polish, Slovene, Croatian, Lithuanian, Latvian | |