| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 641 | MacDougal | Scottish | Son of Dougal. | M | |
| 642 | MacDoughall | Scottish | Son of Dougal. | M | |
| 643 | MacDubhgall | Scottish | Son of Dougal. | M | |
| 644 | MacDuff | Scottish | Son of the blackman. | M | |
| 645 | MacEwen | Scottish | Son of Ewen. | M | |
| 646 | MacFarlane | Scottish | Son of Farlan. | M | |
| 647 | MacFie | Scottish | Son of the dark of peace. | M | |
| 648 | MacGillivray | Scottish | Son of the servant of judgment. | M | |
| 649 | MacGowan | Scottish | Son of the smith. | M | |
| 650 | MacGregor | Scottish | Son of a shepherd. | M | |
| 651 | Machair | Scottish | Plain. | M | |
| 652 | Machar | Scottish | Plain. | M | |
| 653 | Machara | Scottish | Plain. | F | |
| 654 | MacInnes | Scottish | Son of the unique choice. | M | |
| 655 | MacIntosh | Scottish | Son of the thane. | M | |
| 656 | MacIver | Scottish | Son of an archer. | M | |
| 657 | Mack | Scottish | Son of. | M | |
| 658 | MacKay | Scottish | Son of fire. | M | |
| 659 | MacKendrick | Scottish | Son of Henry. | M | |
| 660 | MacKenzie | Scottish | Fair; favored one. 'Son of the fair man' or 'Son of Kenzie'. | M | |