| Maksim | | mahk-SEEM (Russian) | Russian, Belarusian, Macedonian, Ukrainian | |
| Maksym | | MAHK-sim (Polish) | Ukrainian, Polish | |
| Marina | | mah-REE-nah (Italian, Spanish, German, Russian), mə-REEN-ə (English) | Italian, Spanish, Portuguese, German, Swedish, Norwegian, Danish, Dutch, English, Greek, Russian, Uk | |
| Mariya | | mah-REE-yah (Russian) | Russian, Ukrainian, Bulgarian | |
| Marko | | MAHR-ko (Finnish) | Ukrainian, Croatian, Serbian, Slovene, Bulgarian, Macedonian, Finnish, Basque | |
| Martyn | | - | Welsh, Ukrainian | |
| Masozi | | - | Southern African, Tumbuka | |
| Maxim | | mahk-SEEM (Russian) | Russian, Ukrainian, Belarusian | |
| Mikhailo | | - | Ukrainian | |
| Mila | | - | Russian, Ukrainian, Bulgarian, Czech, Serbian, Croatian, Macedonian | |
| Miron (1) | | MEE-rawn (Polish) | Romanian, Russian, Ukrainian, Polish | |
| Mykhail | | - | Ukrainian | |
| Mykhaila | | - | Ukrainian | |
| Mykhailo | | - | Ukrainian | |
| Mykhaylo | | - | Ukrainian | |