| Morley | | MAWR-lee | English (Rare) | |
| Morris | | MAWR-is (English) | English, Medieval English | |
| Mort | | MAWRT | English | |
| Mortimer | | MAWR-ti-mər | English | |
| Morton | | MAWR-tən | English | |
| Morty | | MAWR-tee | English | |
| Moses | | MOZ-əs (English) | English, Jewish, Biblical, Biblical Latin | |
| Moss | | - | English (Archaic), Jewish | |
| Muhammad | | mu-HAHM-mahd (Arabic) | Arabic, Urdu, Punjabi, Pashto, Bengali, Tajik, Indonesian, Malay | |
| Mukesh | | - | Indian, Hindi, Marathi, Gujarati, Bengali | |
| Mukhamed | | - | Chechen | |
| Muriel | | MYUR-ee-əl (English), MUR-ee-əl (English), muy-ree-EL (French) | English, French, Irish | |
| Murielle | | muy-ree-EL | French | |
| Murphy | | MUR-fee | Irish, English | |
| Murray | | MUR-ee | Scottish, English | |