| Name | Meaning | Gender | Origin |
|---|
| Marilyn | Uncertain, maybe bitter | Female | Hebrew |
| Marlena | Contraction of Maria Magdalene | Female | German |
| Martin | From the god Mars | Male | Latin |
| Marvin | Uncertain, possibly eminent marrow | Male | Welsh |
| Matilda | Powerful battler | Female | Germanic |
| Maude | Powerful battler | Female | German |
| Max | Little Maximus | Male | Latin |
| Maxim | The greatest | Male | Latin |
| Maximilian | Little Maximus | Male | Latin |
| Maxine | Little Maximus | Female | Latin |
| Maxwell | Maccus's stream | Male | English |
| May | The fifth month of the year | Female | English |
| Meredith | Great lord | Female | Welsh |
| Mildred | Gentle strength | Female | English |
| Miles | Uncertain, perhaps peaceful | Male | Germanic |
| Millie | Labour | Female | Germanic |
| Milly | Labour | Female | Germanic |
| Milo | Uncertain, perhaps peaceful | Male | Germanic |
| Minerva | Mind | Female | Latin |
| Minnie | Will, desire + helmet, protection | Female | Germanic |
| Miranda | She who must be admired | Female | Latin |
| Miriam | Uncertain, maybe bitter | Female | Hebrew |
| Montgomery | Gomeric's hill | Male | French |
| Monty | Gomeric's hill | Male | French |
| Muriel | Bright as the sea | Female | Gaelic |
| Myrtle | Myrtle | Female | English |
| Nancy | Grace | Female | Hebrew |
| Naomi | Beautiful, pleasant, delightful | Female | Hebrew |
| Ned | Wealth protector | Unisex | English |
| Nell | Abbreviation Of Eleanor Shining Light. | Female | English |