| Moriah | | mo-RIE-ə (English) | Biblical, Biblical Hebrew, English (Modern) | |
| 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 | |
| Muriel | | MYUR-ee-əl (English), MUR-ee-əl (English), muy-ree-EL (French) | English, French, Irish | |
| Murphy | | MUR-fee | Irish, English | |
| Murray | | MUR-ee | Scottish, English | |
| Mya | | MIE-ə | English (Modern) | |
| Myles | | MIELZ, MIE-əlz | English | |
| Myra | | MIE-rə | English | |