| Melita | | - | Various | |
| Melor | | - | Russian | |
| Michail | | - | Greek, Russian | |
| Mikhail | | mee-khah-EEL (Russian) | Russian, Bulgarian | |
| Mikita | | - | Belarusian | |
| Mila | | - | Russian, Ukrainian, Bulgarian, Czech, Serbian, Croatian, Macedonian | |
| 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 | |
| Miron (1) | | MEE-rawn (Polish) | Romanian, Russian, Ukrainian, 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 | |
| Misha | | - | Russian | |
| Mitrofan | | mee-trah-FAHN | Russian | |
| Mitya | | - | Russian | |
| Modest | | - | Russian (Archaic) | |