| Name | Meaning | Gender | Origin |
| Macartan | Son of Artan. | M | Irish |
| Macarthur | son of Arthur | M | Irish |
| MacArtuir | SonofArthur. | M | Gaelic |
| MacAsgaill | SonofAsgaill. | M | Gaelic |
| Macaulay | son of righteousness | M | Scottish |
| MacAuliffe | Son of Olaf. | M | Irish |
| MacAuslan | Son of Absalon. | M | Scottish |
| Macayle | Form of MICHAELA | F | Celtic/Gaelic |
| MacBain | Son of Beathan. | M | Scottish |
| MacBean | Son of Beathan. | M | Scottish |
| MacBeth | Son of Beth. | M | Scottish |
| MacBheathain | Sonofthemanwholivesbytheclearstream. | M | Gaelic |
| MacBhriain | Sonofthestrong. | M | Gaelic |
| MacBride | Son of Bridget 'Bride'. | M | Irish |
| MacCallum | Son of Callum. | M | Scottish |
| MacClennan | Son of Finnian's servant. | M | Scottish |
| MacColl | Son of Coll. | M | Scottish |
| MacCormack | Son of Cormac. | M | Irish |
| Maccoy | son of Hugh | M | Irish |
| Maccrea | son of grace | M | Irish |
| Maccus | Hammer. | M | Celtic |
| MacDaibhidh | David's son. | M | Scottish |
| MacDaraich | Sonofthemanfromthefordbytheoaktrees. | M | Gaelic |
| MacDhuBh | Son of the blackman. | M | Scottish |
| MacDomhnall | Son of the world's ruler. | M | Scottish |
| Macdonald | son of Donald | M | Scottish |
| MacDonell | Son of the world's ruler. | M | Scottish |
| Macdougal | son of Dougal | M | Scottish |
| MacDoughall | Son of Dougal. | M | Scottish |
| MacDubhgall | Son of Dougal. | M | Scottish |
| MacDuff | Son of the blackman. | M | Scottish |
| Mace | A mace was a medieval weapon used by knights. | M | English |
| Macee | Derived from medieval male form of Matthew. | F | French |
| MacElroy | Son of Elroy. | M | Irish |
| Macerio | Form of Mace which is a medieval weapon used by knights. | M | Spanish |
| MacEwen | Son of Ewen. | M | Scottish |
| Macey | Derived from medieval male form of Matthew. | F | French |
| MacFarlane | Son of Farlan. | M | Scottish |
| MacFie | Son of the dark of peace. | M | Scottish |
| MacGhiIleEaspuig | Sonoftheonewhoservesthesacredone. | M | Gaelic |
| MacGhilleAindrei | Sonoftheonewhoservedthemanlyone. | M | Gaelic |
| MacGhilleBhuidhe | Sonoftheonewhoservestheblondone. | M | Gaelic |
| MacGhilleDhuibh | Sonoftheonewhoservesthedarkman. | M | Gaelic |
| MacGhilleDhuinn | SonoftheonewhoservesBrown. | M | Gaelic |
| MacGhilleLaider | Sonoftheonewhoservesthestrongarmedone. | M | Gaelic |
| MacGhilleMhichei | SonoftheonewhoservedSaintMichael. | M | Gaelic |
| MacGillivray | Son of the servant of judgment. | M | Scottish |
| MacGowan | Son of the smith. | M | Scottish |
| MacGregor | Son of a shepherd. | M | Scottish |
| Macha | Aurora | F | Native American |