| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Marinho | - | Portuguese | ||
| Marisa | mah-REE-zah (Italian), mah-REE-sah (Spanish), mə-RIS-ə (English) | Italian, Spanish, Portuguese, English | ||
| Maristela | - | Spanish, Portuguese | ||
| Marquinhos | - | Portuguese | ||
| Marta | MAHR-tah (Spanish, Italian, Polish, Czech) | Spanish, Italian, Portuguese, Catalan, Polish, Czech, Slovak, German, Dutch, Romanian, Slovene, Bulg | ||
| Martim | - | Portuguese | ||
| Martinho | - | Portuguese | ||
| Mateus | - | Portuguese | ||
| Matheus | - | Portuguese (Brazilian) | ||
| Matias | MAH-tee-ahs (Finnish) | Finnish, Portuguese | ||
| Matilde | mah-TEEL-de (Spanish) | Spanish, Portuguese, Italian | ||
| MaurÍCio | mow-REE-syoo | Portuguese | ||
| Mauro | MOW-ro (Italian) | Italian, Portuguese (Brazilian) | ||
| Maximiano | mahk-see-MYAH-no (Spanish) | Spanish, Portuguese | ||
| Maximiliano | mahk-see-mee-LYAH-no (Spanish) | Spanish, Portuguese |