| LukÁŠ | | - | Czech, Slovak | |
| MÁŠA | | - | Czech | |
| Madlenka | | - | Czech | |
| Magda | | MAHK-dah (German), MAHKH-dah (Dutch), MAHG-dah (Polish) | German, Dutch, Swedish, Norwegian, Danish, Czech, Polish, Croatian, Romanian, Portuguese | |
| MagdalÉNa | | - | Czech, Slovak, Hungarian | |
| Magdalena | | mahg-dah-LE-nah (Polish), mahk-dah-LE-nah (German), MAHG-dah-le-nah (Finnish), mag-da-LAY-na (English) | Polish, German, Dutch, Swedish, Norwegian, Danish, Spanish, Occitan, Slovene, Czech, Bulgarian, Mace | |
| Mahulena | | - | Czech | |
| Maja (2) | | MIE-ah (German, Polish) | Croatian, Serbian, Macedonian, Slovene, German, Danish, Swedish, Norwegian, Polish, Czech, Slovak | |
| Malena | | - | Swedish, Spanish, Czech | |
| Marcel | | mar-SEL (French), MAHR-tsel (Polish), MAHR-sel (Dutch, German) | French, Catalan, Romanian, Polish, Czech, Slovak, Dutch, German | |
| Marcela | | mahr-THE-lah (Spanish), mahr-SE-lah (Latin American Spanish), mahr-TSE-lah (Polish), mahr-CHE-lah (Romanian), MAHR-tse-lah (Czech) | Spanish, Polish, Romanian, Czech | |
| Marek | | MAH-rrek (Polish) | Polish, Czech, Slovak | |
| MariÁN | | - | Slovak, Czech, Hungarian | |
| Marian (2) | | MAHR-yahn (Polish) | Polish, Czech, Romanian | |
| Mariana | | mə-RYA-nə (Portuguese), mah-RYAH-nah (Spanish) | Portuguese, Spanish, Romanian, Czech, Ancient Roman | |