| Milen | | - | Bulgarian | |
| Milena | | mee-LE-nah (Italian) | Bulgarian, Czech, Serbian, Croatian, Slovene, Macedonian, Polish, Russian, Italian | |
| Milka (1) | | - | Serbian, Croatian, Slovene, Macedonian, Bulgarian | |
| Milko | | - | Bulgarian | |
| Mira (2) | | - | Bulgarian, Macedonian, Slovene, Croatian, Serbian, Polish | |
| Miroslav | | mee-rah-SLAHF (Russian) | Czech, Slovak, Russian, Serbian, Croatian, Slovene, Bulgarian, Macedonian, Medieval Slavic | |
| Mitre | | - | Bulgarian, Macedonian | |
| Mladen | | MLAH-den (Croatian, Serbian) | Croatian, Serbian, Slovene, Bulgarian, Macedonian | |
| Momchil | | - | Bulgarian | |
| Nadejda | | nah-DYEZH-dah (Russian) | Russian, Bulgarian | |
| Nadezhda | | nah-DYEZH-dah (Russian) | Russian, Bulgarian, Macedonian, Ukrainian | |
| Nadia (1) | | NAD-yə (English), NAHD-yə (English) | French, English, Italian, Russian, Bulgarian, Ukrainian | |
| Nadya (1) | | - | Russian, Bulgarian, Ukrainian | |
| Natanail | | - | Bulgarian, Macedonian | |
| Naum | | - | Russian, Bulgarian, Macedonian | |