| Name | Meaning | Gender | Origin |
|---|
| Moreno | | Unisex | Hebrew |
| Morgan | Uncertain, perhaps bright sea | Female | Welsh |
| Morgana | Uncertain, perhaps bright sea | Female | Welsh |
| Morgance | Dweller Of The Sea | Female | English |
| Morgandy | Little One From The Edge Of The Sea | Female | Celtic |
| Morgen | Sea-born | Female | Welsh |
| Morna | Beloved | Female | Gaelic |
| Morrison | Son Of The Servant Of Mary | Unisex | English |
| Morselina | | Unisex | Hebrew |
| Morton | Settlement by or on a moor | Male | English |
| Morven | Lives By The Sea | Male | English |
| Morwen | Maid | Female | Welsh |
| Morwenna | Maid | Female | Welsh |
| Morwyn | Maid | Unisex | Welsh |
| Mostyn | Moss enclosure | Unisex | English |
| Mr. Baggins | A heroic female German Shepherd dog | Both | English |
| Mrinal | Root of the lotus | Female | Sanskrit |
| Mrinalini | Collection of lotuses | Female | Sanskrit |
| Muffin | A small cup shaped cake | Unisex | English |
| Mukunda | Giver of freedom | Male | Sanskrit |
| Muna | Hope | Female | Arabic |
| Munchkin | A very small elflike person. | Unisex | English |
| Muniya | Bird's name | Female | Indian |
| Mutton | | Unisex | Hebrew |
| My-duyen | | Female | Hebrew |
| Myfanwy | My little lovely one | Female | Welsh |
| Mynah | | Unisex | Hebrew |
| Myranda | Admirable, Beautiful | Female | English |
| Myrna | Beloved | Female | Gaelic |
| Myron | Myrrh | Male | Greek |