Top 100 Irish Surnames

Welcome to the top 100 irish surnames.

The Top 100 Irish Surnames List

These are the top 100 Irish Surnames for 2025.

1. Hackett
2. O'Casey
3. Barry
4. O'Sullivan
5. O'Fogarty
6. Neylan
7. MacDarcy
8. O'Hegarty
9. O'Duff
10. Collins
11. O'Sheridan
12. Farley
13. Falloone
14. Walsh
15. MacDonlevy
16. Grimes
17. O'Molloy
18. Clancy
19. Carey
20. Aiken
21. Morrissey
22. Quaid
23. Millea
24. Dorrian
25. O'Higgins
26. O'Lyne
27. MacCoghlan
28. O'Boland
29. O'Mulrian
30. O'Lenaghan
31. Kerrisk
32. Ryan
33. Neenan
34. Quinelly
35. Prendergast
36. Nyland
37. Ryan
38. Leonard
39. Walsh
40. Jordan
41. MacCabe
42. O'Dunn
43. O'Neill
44. Powell
45. Kelly
46. MacKiernan
47. O'Lennon
48. Devane
49. MacWard
50. Fitzgerald
51. Fox
52. O'Hanraghty
53. Moynihan
54. Murphy
55. O'Brallaghan
56. Falloone
57. Holland
58. MacCarthy
59. MacAuliffe
60. Kinsella
61. O'Concannon
62. Murphy
63. Keegan
64. O'Sullivan
65. MacDermott
66. O'Lennon
67. O'Hogan
68. Roarty
69. O'Hickey
70. Roche
71. Muldowney
72. O'Neilan
73. O'Hanraghty
74. O'Sullivan
75. MacNamara
76. Kerrane
77. Kilroy
78. Fox
79. O'Mahony
80. Collins
81. Fitzpatrick
82. O'Flaherty
83. MacCaffrey
84. MacCaffrey
85. MacNamara
86. Coghlan
87. Carney
88. Malone
89. Hackett
90. Duddy
91. O'Mullan
92. O'Fahy
93. Minnagh
94. Darcy
95. Walsh
96. MacColgan
97. O'Heffernan
98. MacCarthy
99. Clarke
100. Ryan

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