| Name | Meaning | Gender | Origin |
|---|
| Megan | Pearl | Female | Greek |
| Meghan | Pearl | Female | Greek |
| Melody | Melody | Female | Greek |
| Merrick | Moor | Male | Welsh |
| Mickey | Who is like God? | Unisex | Hebrew |
| Midnight | Intense darkness, the middle of the night | Unisex | English |
| Mikey | Who is like God? | Unisex | Hebrew |
| Millie | Labour | Female | Germanic |
| Mindy | Pet form of Melinda | Female | English |
| Misty | Misty | Female | English |
| Mitzi | Uncertain, maybe bitter | Unisex | Hebrew |
| Mollie | Uncertain, maybe bitter | Female | Hebrew |
| Molly | Uncertain, maybe bitter | Female | Hebrew |
| Monroe | Mouth of the River Roe | Male | Gaelic |
| Monte | Gomeric's hill | Male | French |
| Montgomery | Gomeric's hill | Male | French |
| Monty | Gomeric's hill | Male | French |
| Morgan | Uncertain, perhaps bright sea | Female | Welsh |
| Moxie | Ability to face difficulty with courage. | Unisex | English |
| Murphy | Sea warrior | Male | Gaelic |
| Murray | Man of the sea | Male | Gaelic |
| Myles | Uncertain, perhaps peaceful | Male | Germanic |
| Natalie | Christ's birthday | Female | Italian |
| Nellie | Abbreviation Of Eleanor Shining Light. | Female | English |
| Newman | New man | Male | English |
| Newton | New settlement, new enclosure | Male | English |
| Nick | Victory of the people | Male | Greek |
| Nikki | Victory of the people | Female | Greek |
| Nimue | The Lady Of The Lake | Female | Welsh |
| Oakley | From the oak meadow | Male | English |