| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 601 | Mayhew | French | Gift of God. | M | |
| 602 | Maynard | French | Powerful. | M | |
| 603 | Mayne | French | Powerful. | M | |
| 604 | Maynor | French | Powerful. | M | |
| 605 | Melville | French | From Malleville. | M | |
| 606 | Mercer | French | Merchant. | M | |
| 607 | Merla | French | Blackbird. | M | |
| 608 | Merle | French | Blackbird. | M | |
| 609 | Merlin | French | Falcon. | M | |
| 610 | Merlion | French | Falcon. | M | |
| 611 | Michel | French | Form of Michael 'Who is like God?'. | M | |
| 612 | Michele | French | French form of Michael. | M | |
| 613 | Mikel | French | Form of Michael 'Who is like God?'. | M | |
| 614 | Millard | French | Strong. | M | |
| 615 | Miquel | French | Form of Michael 'Who is like God?'. | M | |
| 616 | Montagu | French | Variant of Montague: Pointed hill. Steep mountain. More commonly found as a surname, although used occasionally as a first name. | M | |
| 617 | Montague | French | Pointed hill. Steep mountain. More commonly found as a surname, although used occasionally as a first name. | M | |
| 618 | Montaigu | French | From the pointed hill. | M | |
| 619 | Montaine | French | Mountain. | M | |
| 620 | Monte | French | Diminutive of Montgomery: Mountain belonging to the ruler. Also can be a diminutive of Montague: Pointed hill. Steep mountain. | M | |