Starting with letter M
| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 541 | Maro | Japanese | Myself. | M | |
| 542 | Maroth | Biblical | Bitterness. | M | |
| 543 | Marq | French | Of Mars; the god of war. | M | |
| 544 | Marque | French | Of Mars; the god of war. | M | |
| 545 | Marques | Portuguese | Of Mars; the god of war. A title name ranking below duke and above earl. | M | |
| 546 | Marquez | Spanish | A title name ranking below duke and above earl. | M | |
| 547 | Marquis | French | A title name ranking below duke and above earl. | M | |
| 548 | Marquise | Italian | A title name ranking below duke and above earl. | M | |
| 549 | Marrok | ArthurianLegend | A knight thought to be a werewolf. | M | |
| 550 | Mars | Latin | God of war. | M | |
| 551 | Mars Leucetius | Anglo-Saxon | God worshipped at Bath. | M | |
| 552 | Marschall | English | Steward. | M | |
| 553 | Marsden | English | From the marsh valley. | M | |
| 554 | Marsena | Biblical | Bitterness of a bramble. | M | |
| 555 | Marsh | English | From the marsh. | M | |
| 556 | Marsh | French | Steward. | M | |
| 557 | Marshal | English | Steward. Also, a law enforcement officer's title. | M | |
| 558 | Marshal | French | Variant of Marshall: Horse servant; marshal; steward. | M | |
| 559 | Marshall | English | Steward 'Caretaker of horses.'. | M | |
| 560 | Marshall | French | Horse servant; marshal; steward. | M | |