Irish Last Names Beginning with M: A Comprehensive Guide

Looking for Irish last names that start with the letter "M"? This comprehensive list will guide you through some of the most common and intriguing surnames, delving into their origins and meanings. From ancient Gaelic roots to anglicized versions, explore the rich tapestry of Irish history reflected in these names.
1. **MacAllister:** Son of Alasdair (Alexander), a common Gaelic name meaning "defender of mankind".
2. **MacBride:** Son of Briad, meaning "strong" or "noble".
3. **MacCarthy:** Son of Carthaigh, meaning "loving" or "charitable".
4. **MacCormick:** Son of Cormac, meaning "charioteer" or "warlord".
5. **MacDermott:** Son of Dermot, meaning "protector" or "free man".
6. **MacDonagh:** Son of Donagh, meaning "dark" or "brown".
7. **MacDonnell:** Son of Domhnall (Donald), meaning "world ruler".
8. **MacEoin:** Son of Eoin (John), meaning "God is gracious".
9. **MacEntee:** Son of Enda, meaning "well-born" or "noble".
10. **MacFarlane:** Son of Fearlan, meaning "brave" or "fierce".
11. **MacGillivray:** Son of Gille-Bride, meaning "servant of Briad".
12. **MacGregor:** Son of Griogair (Gregory), meaning "watchful" or "alert".
13. **MacGuire:** Son of Giolla Iosa, meaning "servant of Jesus".
14. **MacHale:** Son of Maol, meaning "devout" or "holy".
15. **MacIntosh:** Son of Donnchadh (Duncan), meaning "brown warrior".
16. **MacKay:** Son of Aed (Hugh), meaning "fire" or "strength".
17. **MacKenna:** Son of Cenn, meaning "head" or "leader".
18. **MacKenzie:** Son of Coinneach (Kenneth), meaning "handsome" or "born of fire".
19. **MacMahon:** Son of Maol-Muadh, meaning "devout with praise".
20. **MacManus:** Son of Manus, meaning "strong" or "brave".
21. **MacMartin:** Son of Martin, meaning "war god".
22. **MacMaster:** Son of Máistir (Master), a title of respect.
23. **MacMillan:** Son of Míle, meaning "soldier" or "warrior".
24. **MacMurrough:** Son of Muircheartach, meaning "sea warrior".
25. **MacNeil:** Son of Niall, meaning "champion" or "cloud".
26. **MacPherson:** Son of Fearchar (Ferdinand), meaning "strong man".
27. **MacRory:** Son of Rory, meaning "red king".
28. **MacSweeney:** Son of Suibhne, meaning "sweet".
29. **Maguire:** A variant spelling of MacGuire, with the same meaning.
30. **Mahon:** A variant spelling of MacMahon, with the same meaning.
31. **Mangan:** Meaning "fair" or "handsome".
32. **Manning:** A variant spelling of Manning, meaning "son of the builder".
33. **Mara:** Meaning "sea" or "ocean".
34. **Markey:** A variant spelling of Murphey, meaning "sea warrior".
35. **Martin:** Meaning "war god".
36. **Matthews:** Meaning "gift of God".
37. **May:** Meaning "pleasant" or "beautiful".
38. **McCarthy:** An anglicized version of MacCarthy.
39. **McDonald:** An anglicized version of MacDonnell.
40. **McGrath:** An anglicized version of MacGrath, meaning "devout" or "prayerful".
41. **McGuinness:** An anglicized version of MacGuinness, meaning "son of the fair one".
42. **McIntyre:** An anglicized version of MacIntyre, meaning "son of the lord".
43. **McKeown:** An anglicized version of MacKeown, meaning "son of the handsome one".
44. **McLaughlin:** An anglicized version of MacLaughlin, meaning "son of the warrior".
45. **McMahon:** An anglicized version of MacMahon.
46. **McManus:** An anglicized version of MacManus.
47. **McMillan:** An anglicized version of MacMillan.
48. **McMurrough:** An anglicized version of MacMurrough.
49. **McNeil:** An anglicized version of MacNeil.
50. **Murphy:** An anglicized version of Murphey, meaning "sea warrior".
51. **Murray:** An anglicized version of Muireadhach, meaning "sea warrior".
52. **Mullen:** Meaning "miller".
53. **Mullins:** Meaning "miller".
54. **Murphy:** Meaning "sea warrior".
55. **Murray:** Meaning "sea warrior".
56. **Myles:** A shortened version of Miles, meaning "soldier" or "warrior".
57. **Malone:** Meaning "bald head".
58. **Mallon:** Meaning "bald head".
59. **Mallory:** Meaning "hammer" or "strong".
60. **Maloney:** Meaning "bald head".