| Margarita | | mahr-gah-REE-tah (Spanish, Russian) | Spanish, Russian, Bulgarian, Lithuanian, Late Roman | |
| Marija | | - | Croatian, Slovene, Serbian, Macedonian, Lithuanian, Latvian | |
| Marijona | | - | Lithuanian | |
| Marijus | | - | Lithuanian | |
| Martynas | | - | Lithuanian | |
| Matas | | - | Lithuanian | |
| Melanija | | - | Serbian, Macedonian, Slovene, Latvian, Lithuanian | |
| MiglĖ | | - | Lithuanian | |
| Milda | | - | Lithuanian, Baltic Mythology | |
| Mindaugas | | - | Lithuanian | |
| Modestas | | - | Lithuanian | |
| Monika | | MO-ni-kah (German), maw-NEE-kah (Polish) | German, Swedish, Norwegian, Danish, Czech, Slovak, Polish, Slovene, Croatian, Lithuanian, Latvian | |
| Morta | | - | Lithuanian | |
| Mykolas | | - | Lithuanian | |