| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Matylda | mah-TIL-dah (Polish) | Czech, Polish | ||
| Maurycy | mow-RI-tsi | Polish | ||
| Melania | me-LAHN-yah (Polish) | Italian, Spanish, Polish, Late Roman | ||
| Metody | me-TAW-di | Polish | ||
| MiŁOgost | mee-WAW-gawst | Polish (Rare) | ||
| MiŁOsŁAw | mee-WAW-swahf | Polish (Rare) | ||
| MiŁOsz | MEE-wawsh | Polish | ||
| MichaŁ | MEE-khahw | Polish | ||
| Michalina | mee-khah-LEE-nah | Polish | ||
| MieczysŁAw | mye-CHI-swahf | Polish | ||
| MieczysŁAwa | mye-chi-SWAH-vah | Polish | ||
| Mieszko | MYESH-kaw | Polish | ||
| MikoŁAj | mee-KAW-way | Polish | ||
| Milena | mee-LE-nah (Italian) | Bulgarian, Czech, Serbian, Croatian, Slovene, Macedonian, Polish, Russian, Italian | ||
| Mira (2) | - | Bulgarian, Macedonian, Slovene, Croatian, Serbian, Polish |