| Lucia | | loo-CHEE-ah (Italian), LOO-tsee-ah (German), LOO-shə (English), loo-SEE-ə (English) | Italian, German, English, Swedish, Norwegian, Danish, Romanian, Slovak, Ancient Roman | |
| LukÁŠ | | - | Czech, Slovak | |
| MÁRia | | MAH-ree-aw (Hungarian) | Hungarian, Slovak | |
| MagdalÉNa | | - | Czech, Slovak, Hungarian | |
| Maja (2) | | MIE-ah (German, Polish) | Croatian, Serbian, Macedonian, Slovene, German, Danish, Swedish, Norwegian, Polish, Czech, Slovak | |
| Marcel | | mar-SEL (French), MAHR-tsel (Polish), MAHR-sel (Dutch, German) | French, Catalan, Romanian, Polish, Czech, Slovak, Dutch, German | |
| Marek | | MAH-rrek (Polish) | Polish, Czech, Slovak | |
| Margita | | - | Hungarian, Slovak | |
| MariÁN | | - | Slovak, Czech, Hungarian | |
| Marianna | | mer-ee-AN-ə (English), mar-ee-AN-ə (English), mahr-YAHN-nah (Polish) | Italian, English, Hungarian, Slovak, Polish, Greek | |
| Marika | | MAH-ree-kah (Finnish) | Czech, Slovak, Polish, Hungarian, Greek, Finnish, Estonian | |
| MarkÉTa | | - | Czech, Slovak | |
| Marta | | MAHR-tah (Spanish, Italian, Polish, Czech) | Spanish, Italian, Portuguese, Catalan, Polish, Czech, Slovak, German, Dutch, Romanian, Slovene, Bulg | |
| Martin | | MAHR-tən (English), mar-TEN (French), MAHR-teen (German, Finnish), MAHR-tin (Swedish, Norwegian, Danish), MAWR-teen (Hungarian), mahr-TIN (Bulgarian) | English, French, German, Swedish, Norwegian, Danish, Russian, Romanian, Czech, Slovak, Slovene, Croa | |
| Martina | | mahr-TEE-nah (Italian, Spanish, Dutch), mahr-TEEN-ə (English) | German, Italian, Spanish, Catalan, Czech, Slovak, Croatian, Slovene, English, Swedish, Dutch, Ancien | |