| Marius | | MER-ee-əs (English), MAR-ee-əs (English), MAH-ree-uws (German) | Ancient Roman, Romanian, German, Dutch, Norwegian, Danish, French | |
| Mariya | | mah-REE-yah (Russian) | Russian, Ukrainian, Bulgarian | |
| Marjan (2) | | - | Slovene, Macedonian, Serbian, Croatian | |
| Marjana | | - | Slovene, Croatian | |
| Marjani | | - | Eastern African, Swahili | |
| Mark | | MAHRK (English, Russian) | English, Russian, Dutch, Swedish, Norwegian, Danish, Biblical | |
| MarkÉTa | | - | Czech, Slovak | |
| Markel | | - | Basque | |
| Marko | | MAHR-ko (Finnish) | Ukrainian, Croatian, Serbian, Slovene, Bulgarian, Macedonian, Finnish, Basque | |
| Markos | | - | Greek, Ancient Greek, Biblical Greek | |
| Markus | | MAHR-kuws (German), MAHR-koos (Finnish) | German, Swedish, Norwegian, Danish, Finnish | |
| Markuss | | - | Latvian | |
| Marlen (1) | | - | Russian | |
| Marlen (2) | | - | German | |
| Marlene | | mahr-LE-nə (German), MAHR-leen (English) | German, English | |