| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 621 | Mac | Scottish | Son of. | M | |
| 622 | MacAdhamh | Scottish | Son of Adam. | M | |
| 623 | MacAlister | Scottish | Son of Alasdair. | M | |
| 624 | MacAlpin | Scottish | Son of Alpine. | M | |
| 625 | MacAlpine | Scottish | Son of Alpine. | M | |
| 626 | MacAndrew | Scottish | Son of Andrew. | M | |
| 627 | MacArthur | Scottish | Son of Arthur. | M | |
| 628 | MacAulay | Scottish | Son of Olaf. | M | |
| 629 | MacAuslan | Scottish | Son of Absalon. | M | |
| 630 | MacBain | Scottish | Son of Beathan. | M | |
| 631 | MacBean | Scottish | Son of Beathan. | M | |
| 632 | MacBeth | Scottish | Son of Beth. | M | |
| 633 | MacCallum | Scottish | Son of Callum. | M | |
| 634 | MacClennan | Scottish | Son of Finnian's servant. | M | |
| 635 | MacColl | Scottish | Son of Coll. | M | |
| 636 | MacDaibhidh | Scottish | David's son. | M | |
| 637 | MacDhuBh | Scottish | Son of the blackman. | M | |
| 638 | MacDomhnall | Scottish | Son of the world's ruler. | M | |
| 639 | MacDonald | Scottish | Son of the world's ruler. | M | |
| 640 | MacDonell | Scottish | Son of the world's ruler. | M | |