Starting with letter M
| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 601 | Morholt | ArthurianLegend | Prince killed by Tristan. | M | |
| 602 | Moriarty | Irish | Expert seaman. | M | |
| 603 | Morio | Japanese | Forest boy. | M | |
| 604 | Morland | English | Marsh; wet land. | M | |
| 605 | Morocco | Shakespearean | 'The Merchant of Venice' The Prince of Morocco, suitor to Portia. | M | |
| 606 | Morogh | Scottish | Man of the sea. | M | |
| 607 | Morpheus | Greek | Bringer of dreams. | M | |
| 608 | Morrey | English | Dark-skinned. A Moor. Form of Maurice. | M | |
| 609 | Morris | English | Son of More. | M | |
| 610 | Morris | Latin | Variant of Maurice: Moorish; dark-skinned; swarthy. | M | |
| 611 | Morrison | Scottish | Son of the servant of Mary. | M | |
| 612 | Morrissey | Irish | Choice of the sea. | M | |
| 613 | Mort | French | Diminutive of Mortimer: Dead sea (a stagnant lake). | M | |
| 614 | Mortimer | French | Dead sea (a stagnant lake). | M | |
| 615 | Mortimer | Latin | Dwells by the still water. | M | |
| 616 | Mortimer | Shakespearean | 'King Henry IV, Part 1' Earl of March. 'Henry VI, Part 1' Edmund Mortimer, Earl of March. 'King Henry the Sixth, Part III' Sir John Mortimer, uncle to the Duke of York. | M | |
| 617 | Morton | English | From the farm near the moor. | M | |
| 618 | Morton | Shakespearean | 'King Richard III' John Morton, Bishop of Ely. | M | |
| 619 | Morvran | Welsh | Legendary son of Tegid. | M | |
| 620 | Moses | Biblical | 'Taken out, drawn forth' | M | |