| Name | Meaning | Gender | Origin |
|---|
| Magnus | Great | Male | Latin |
| Major | Greater | Male | Latin |
| Marc | From the god Mars | Male | Latin |
| Marci | From the god Mars | Female | Latin |
| Marcus | From the god Mars | Male | Latin |
| Maria | Bitter | Female | Hebrew |
| Marianna | Combination of Maria and Anna | Female | Latin |
| Mark | From the god Mars | Male | Latin |
| Marlene | Of Magdala | Female | Hebrew |
| May | The fifth month of the year | Female | English |
| Maya | Uncertain, perhaps mother or great one | Female | Greek |
| Mckenzie | Son of Coinneach | Female | Gaelic |
| Medusa | Cunning | Unisex | English |
| Melinda | Blending of 'mel' and 'inda' | Female | English |
| Melvin | Uncertain, possibly bad town | Male | English |
| Meredith | Great lord | Female | Welsh |
| Micro | | Unisex | Hebrew |
| Miles | Uncertain, perhaps peaceful | Male | Germanic |
| Miriam | Uncertain, maybe bitter | Female | Hebrew |
| Misfit | | Unisex | Hebrew |
| Mojo | Good luck charm. | Unisex | English |
| Monroe | Mouth of the River Roe | Male | Gaelic |
| Montgomery | Gomeric's hill | Male | French |
| Morag | Moor | Female | Latin |
| Morse | Dark-Skinned: A Moor. Form Of Maurice. | Male | English |
| Mr. | | Unisex | Hebrew |
| Murdock | Sea | Male | Gaelic |
| Nash | At the ash tree | Male | English |
| Natasha | (Christ's) birthday | Female | Latin |
| Nelson | Son of Neal | Male | English |